LR3 Repair - Swaybar Retrofit to reduce Suspension Knock

Posted in LR3 Tips & Help, Land Rover on February 19th, 2009 by nwoods
discount cialis no rx generic viagra online cialis online without prescription cialis pharmacy online cheap cialis no rx compare cialis prices purchase viagra no rx cheap generic cialis buy cialis in us order viagra no prescription order cheap cialis viagra without rx order viagra in canada buy viagra buy generic cialis discount viagra order viagra without prescription viagra in australia cheap cialis from usa cialis pill drug cialis online purchase viagra cost order cialis overnight delivery find cialis buy viagra generic cialis overnight viagra price purchase viagra overnight delivery cheap viagra tablets buy cialis online cialis tablets viagra australia cialis india no rx viagra cialis online cheap cialis online review order viagra from canada buy discount cialis online viagra without a prescription viagra pharmacy online cialis in malaysia lowest price for viagra cialis for order cialis overnight shipping cialis side effects viagra tablet order no rx viagra approved cialis pharmacy discount viagra overnight delivery buy generic cialis online viagra overnight delivery cialis free sample buy viagra lowest price order discount cialis online find cheap viagra purchase viagra without prescription order cheap viagra online cheapest cialis cheap cialis no prescription tablet viagra free cialis order cialis in canada low cost viagra drug viagra online purchase viagra rx price of viagra viagra online stores cheap viagra tablet buy cialis internet buy cialis from canada generic cialis online fda approved viagra viagra no online prescription cialis in us cheap cialis online cheapest viagra price cialis from canada cialis order order cheap cialis online buy cheapest cialis online cialis price generic cialis cheap online pharmacy viagra discount cialis online cialis pills cialis discount cialis drug where to buy viagra best price for cialis cialis buy online buy cheap viagra find discount viagra online certified viagra order cialis no rx viagra without prescription buy cialis from india cheapest viagra viagra drug order viagra on internet cheap cialis internet cialis bangkok buy viagra without prescription viagra online pharmacy cialis malaysia where to order viagra cialis without prescription viagra in malaysia buying viagra order cialis without prescription cheap viagra in canada viagra in us buying generic cialis find no rx cialis cialis rx buy cialis online cheap order viagra overnight delivery viagra prescription cheapest viagra prices viagra no rx required buy cialis on line find discount viagra pharmacy viagra cheap cialis in uk discount viagra no rx cialis viagra pills buy cheap cialis viagra buy online purchase viagra online viagra medication find viagra find viagra without prescription buy no rx viagra cheap cialis without prescription best price cialis viagra tablets cheap viagra overnight delivery buy cialis no rx certified cialis cialis us buy cialis overnight delivery cheap price viagra online viagra buy discount viagra buy viagra internet viagra information viagra us cialis overnight delivery cialis sales cialis no rx required viagra from india viagra online review buying generic viagra find no rx viagra find discount cialis online cheap price cialis cialis cheapest price viagra india viagra no rx cialis cialis no prescription cheap cialis tablets buy cialis cheap viagra pharmacy purchase cialis online buy viagra low price viagra online cialis prescription viagra malaysia buy cialis cheap cheap cialis from uk overnight viagra buy viagra us buy generic viagra online viagra discount discount viagra online cheap cialis drug viagra cialis in australia buy viagra online cheap cialis from india lowest price for cialis pharmacy cialis viagra internet cheapest viagra online order cheap viagra find viagra on internet viagra in bangkok viagra sales cheapest generic cialis online cialis approved compare cialis prices online viagra overnight find cheap cialis online cialis buy where to buy cialis cost viagra best price for viagra buy cialis from us discount cialis overnight delivery order cialis on internet cialis cost buying cialis online sale cialis cheap viagra no prescription viagra buy drug no prescription cialis order viagra no prescription required buy viagra in canada cialis without a prescription order cialis cheap online sale viagra buy viagra in us viagra pharmacy cheapest generic viagra online cialis australia cheap viagra from canada viagra free delivery viagra purchase viagra generic buy no rx cialis viagra from canada lowest price cialis generic cialis buy cheapest viagra find cialis online order viagra from us viagra side effects cheap viagra no rx cheap viagra on internet cheap viagra from uk cialis cheap drug buying cialis buying viagra online cialis internet buy viagra on line order cialis from us cialis online pharmacy viagra online cheap viagra uk buy cheapest viagra on line cheap viagra in usa viagra cheapest price viagra vendors cheap cialis overnight delivery cialis no rx buy discount cialis drug cialis cialis without rx order discount viagra viagra sale order viagra cheap online viagra buy order cialis no prescription viagra free sample viagra no rx buy cheap viagra online tablet cialis cialis medication buy cialis low price viagra cheap generic viagra find cialis without prescription viagra order viagra cheap drug viagra overnight shipping viagra prices buy cialis on internet cheap viagra from usa online cialis cheapest generic viagra cialis vendors generic viagra cheap cialis tablet order cialis online cheap viagra in uk cialis cheap price cheap viagra order viagra in us cialis buy drug cheap viagra without prescription cialis sale cheap cialis pill order discount viagra online buy cialis without prescription cheapest cialis online buy discount viagra online buy generic viagra buy viagra no rx viagra pill buy cialis us cialis in uk buy cheap viagra internet purchase cialis without prescription order discount cialis cheap cialis tablet cialis in bangkok cialis for sale order generic cialis viagra no prescription order cialis in us buy viagra online order cialis compare viagra prices overnight cialis buy viagra overnight delivery find viagra no prescription required cialis prices buy cheap cialis online order viagra viagra for sale buy cheapest viagra online cialis pharmacy buy viagra no prescription required buy cialis in canada buy cialis no prescription required find viagra online cheap cialis pharmacy cialis online stores discount cialis fda approved cialis cheap cialis on internet viagra bangkok viagra canada cost cialis approved viagra pharmacy cialis generic buy viagra on internet buy cialis lowest price buy cheapest cialis on line compare viagra prices online free viagra find cheap cialis online pharmacy cialis viagra in uk buy cheapest cialis low cost cialis order no rx cialis order viagra no rx purchase cialis overnight delivery cialis uk cheap cialis in usa order viagra online find discount cialis find cialis on internet cialis canada lowest price viagra purchase cialis cheapest generic cialis buy viagra from canada cheap generic viagra cheapest cialis prices price of cialis discount viagra without prescription cheap viagra online where to order cialis buy viagra from india purchase cialis no rx cheapest cialis price buy viagra from us cialis cheap cheap cialis in canada cialis no online prescription find cheap viagra online order cialis no prescription required viagra online without prescription viagra cheap price cialis free delivery best price viagra order cialis from canada buy viagra cheap find cialis no prescription required cialis purchase purchase viagra discount cialis without prescription cheap viagra pill cheap cialis from canada viagra approved buy cheap cialis internet cost of cialis cost of viagra cheap viagra internet no prescription viagra cialis information cialis online order generic viagra buy cialis generic viagra for order

Suffering from suspension knock? Out of warranty?  An excellent how-to article was posted by Disco_Mikey on www.disco3.co.uk with pictures and part numbers on how to add the newly released rubber isolation shims that help prevent the anti-sway bars from knocking about. This will help!

http://www.disco3.co.uk/forum/topic30622.html 

LR3 Repair - How to replace lower ball joints

Posted in LR3 Tips & Help, Land Rover on February 19th, 2009 by nwoods

Suffering from suspension knock? Out of warranty?  An excellent how-to article was posted by Disco_Mikey on www.disco3.co.uk with pictures and part numbers on how to replace the front lower ball joints.  This will help!

http://www.disco3.co.uk/forum/topic30622.html 

Buying A Used LR3 (V6 or V8?, Which Options?, Cautions?)

Posted in LR3 Tips & Help, Land Rover on September 11th, 2008 by nwoods

I get asked a lot of questions from prospective LR3 owners about the sanity of buying a used LR3.  I will answer it this way, I plan on buying another LR3 myself as soon as I am able to, and it will probably be a used 2007 V8 SE or HSE with a rear locker.

A typical question that I am asked, looks something like this (in fact, this is a question I was just recently asked!):
—————————–
“Hi Nathan, I am looking at LR3s and I will likely buy one very soon. I know a lot about RRCs and Disco II because I have owned both. However, I do not know much about the LR3. I have found a V6 2005 with only 17K miles on it for $21K. It is very clean. Would you recommend the V8 over the V6? The V6 compared to my Disco II and RRC seem to have enough power.  This V6 is a certified pre-owned at a LR dealer and has warranty that has been extended for 2 years on top of the factory warranty. It does not have any extras on it…heated seats, NAV, or upgraded lights.

I see a lot of V8 on the market. I can find one for about the same price as the V6 but with 30K miles. Some have NAV and cold weather package.

Thanks for your feedback. 

———————

Here is my response:

Yes, I have the V6, it has way more power than all the older Rover V8’s that have come before it.  I can run rings around them.  I have never lacked for power in any on-road or off-road situation.  However, I can’t use the cruise control in hilly areas.  In my opinion (and others have verified this), the V6 is mated to the transmission even better than the V8.  It’s really seamless.  However, having said all that, I cannot think of any reason to get the V6 over the V8. When I buy another LR3, it will be a V8.  The extra hp makes the 6,000  lbs truck seem more nimble on the road, and the torque is bottomless on the trail.  In the V6, I use the Command Shift like a manual transmission to keep things lively.  In the V8, you never really need to take it out of drive unless you are descending a steep hill and need 1st gear.

You do not need the bi-xeon light upgrade, but it is very nice.  However, you can upgrade for about $350 on your own afterwards.

The Nav system is not very good, but the 4×4 screen can be very helpful because it shows your front wheel orientation (useful in the rocks).  The little message center above the steering wheel will also do this, so if you don’t have the Nav, its still okay.  I would not sweat it at all if you don’t get one with Nav.  Besides, the dash cubby is very convenient, and Garmins are cheap.

The heated seats and windshields are awesome!  Try very hard to get one with the cold weather package.  They are very convenient and I use them a surprising amount.  My kids love them too, and call them “waffle seats”  I swear you can cook toast on the high setting…

Certified pre-owned is the ONLY way to get one.  The factory extended warranty has recently skyrocketed in price, so getting one via certified is the only way to go.  I currently do not have an extended warranty, and I am past the 50,000 mile factory warranty, so I am not exactly practicing what I preach, but that’s due to my financial situation, not my desire to eschew the coverage.

The difference in sound quality between the HSE’s 550w stereo and the SE’s 220w stereo is almost worth the couple of extra grand the HSE costs…better seats too :-)

I’m pretty agnostic between 2005/2006 model years. They both had similar problems that have ALL been fixed by the dealer network by now. They are solid, dependable vehicles.  The 2007’s have seats that worked without the ignition key, and one-touch  passenger window, which is nice.  The seat thing is pretty darn handy if you have kids and need to flip the middle seats up and down frequently.

The 5 seater has better middle row seats. There is lots of hidden storage beneath and behind them.  If you are ambivalent about 5 or 7 seater, and want to maximize storage space, it’s something to think about.  But its not a deal breaker one way or another unless you definately need to haul more people than gear.

Things to look out for in a used LR3:
- test drive on dirt or loose/broken pavement.  If there is “knocking” felt through the steering console, the bushings are shot. They are the one true weak spot in an otherwise extremely durable rig.
- worn bushings in the front suspension control arms
- worn bushings in the front and rear sway bars.  Grab them and wiggle it.  If it moves, point it out and try to get them replaced.
- tire alignment all 4 corners.  I get mine done every 4 months, and it needs it!
- test all the CD holders in the radio.  Sometimes they stick, and the only fix that I’m aware of is to replace the head unit.
- Sunroof rails.  The tracks on either side of the sunroof grow brittle and crack.  Expensive to fix, have this done by the dealer before you take it home.
Of course, if you are reading this blog, you probably already know about the HD package.  If you find one, great! If your timing and finances push you towards one without, no big deal.  The Traction Control is more than good enough to compensate.  It takes more skill and finesse maybe (just barely), but there will never be an obstacle you can’t do that a locked one can.  But, for a dedicated off road truck, the rear locker is high on the wish list to look for.  There are no aftermarket options for lockers.
The center console refrig is pretty weak.  Works okay, but not an important option, you can add one later if you wish.

Front PDC (distance sensor) is a pain in the ……, the rear is fantastic.  Many people have the front disabled soon after ownership.

The Bluetooth handsfree thing works pretty well and I recommend it.
It’s easy to add a true iPod connector that plugs into the bottom of your iPod and gets you power and high level input audio.  I added mine for about $100, installed, at a stereo shop.  Damm that HSE sound system rocks compared to mine….

Good luck and happy hunting.

New Tire Alignment Specs for the LR3

Posted in LR3 Tips & Help, Land Rover, Tires, mods on August 14th, 2008 by nwoods

Reprinted from a post from MustBeAudi on Land Rover World forums:

Uneven tire wear.
The steering alignment geometry of certain vehicles may experience some bushing settlement during early vehicle life. Following initial production geometry setting, this settling may alter the geometry settings outside of normal tolerance, which may in turn increase tire wear.

Revised geometry settings introduced after 6A403382 compensate for this situation.
NOTE: This situation is not experienced on all vehicles. Toe sensitivity may be attributed to other factors.

CAUTION: Retailers who sublet alignment to outside shops must provide the information in this bulletin to the alignment facility to ensure proper settings when uneven tire wear symptoms are being addressed. Additionally all vehicles equipped with EAS sent for sublet alignment MUST have been placed in the “tight tolerance” geometry setting mode prior to delivery using IDS.

Action: Should a customer express a specific concern of uneven tire wear, refer to the Repair Procedure detailed in this bulletin to adjust the vehicle geometry to the “target” settings noted below. NOTE: In other situations requiring geometry adjustment, where a specific concern of uneven tire wear is not expressed or diagnosed, the geometry dimensions in the workshop manual should be used. A specific set of “target” geometry data is provided in this bulletin for use in vehicles where the geometry needs to be adjusted to correct an uneven tire wear concern.

PARTS:
No parts required

WARRANTY:
NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.

NOTE: The revision to the time in this bulletin is the result of the introduction of the new IDS “tight tolerance” geometry setting mode for suspension adjustments. This simple IDS process replaces and eliminates the requirement to perform a suspension calibration (1.1 hrs) in association with the alignment process. Refer to Technical Bulletin LA204-007 for additional information about the geometry setting mode. DDW requires the use of causal part numbers.
Labor only claims must show the causal part number with a quantity of zero.
Description SRO Time
(Hours)
Condition
Code Causal Part
Place vehicle in “tight tolerance”
mode using IDS and align suspension
geometry
57.65.04 1.80 W6 ALGN4W

Normal warranty policy and procedures apply.
REPAIR PROCEDURE
ALIGN SUSPENSION GEOMETRY

1. If the vehicle has Electronic Air Suspension (EAS), refer to Technical Bulletin LA204-007, connect IDS to the vehicle and place the Electronic Air Suspension (EAS), into “tight tolerance” geometry setting mode.

NOTE: A small number of coil sprung vehicles were imported into North America at the very start of LR3 importation. Step 2 is included in the event that such a vehicle requires suspension alignment.

2. If the vehicle has coil spring suspension, perform the following steps to ensure that the equivalent of a full tank of gasoline weight is present in the vehicle when the alignment process is performed:
NOTE: LR3 fuel tank capacity is 22.7 US gallons (86.3 litres). A full LR3 fuel tank weighs approximately 152 lbs (69 kg).
• Accurately determine the volume of fuel in the tank.
• If the tank is not full, calculate the weight of the fuel in the tank using one of the following formulas:
o Multiply the number of US gallons of fuel by 6.7 to equal total pounds of fuel.
o Multiply the number of liters of fuel by 0.8 to equal total kg of fuel.
NOTE: Any weight equivalent placed into the load space area must be evenly distributed at the front and the right hand side of the load space.
• Calculate the weight equivalent that must be added to the load space area by subtracting the total amount of fuel currently in the tank from the LR3 fuel tank capacity of 152 lbs. (69 kg).
NOTE: Vehicles that have any of the front or rear, upper or lower control arm bushings changed must complete a ten mile road test before having the geometry checked and adjusted if necessary.
The road test will allow the suspension to settle.

NOTE: GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA – LR3 > Workshop Manuals > Bookmark “Chassis/Suspension/204-00: Suspension System – General Information” Link “Four-Wheel Alignment (57.65.04)”

CAUTION: GTR identifies an alignment specification range.
The exact “TARGET SPECIFICATIONS” in the table below should be used on vehicles that have experienced uneven tire wear.
When setting suspension geometry after front or rear/upper or lower control arm bushing replacement, the rear toe should be set to the TARGET SPECIFICATION in the table.

3. Refer to GTR section 204-00 Four-Wheel Alignment operation 57.65.04 and adjust the front and rear wheel alignment to the “TARGET” specification figures noted in the table below:
TOE ADJUSTMENT
TARGET
SPECIFICATIONS
(decimal degrees)
Front total toe + 0.03
Left-hand rear toe + 0.18
Right-hand rear toe + 0.18
Rear total toe + 0.36

LR3 - Navigation and Car Computer Install

Posted in LR3 Tips & Help, Land Rover, Uncategorized, mods on July 13th, 2008 by nwoods

There are several threads where some ingenious people have installed car computers with upgraded navigiation & audio capabilities into their Land Rover LR3’s.  Here are a few links:

LR3 - Subwoofer Upgrade

Posted in LR3 Tips & Help, Land Rover, mods on July 13th, 2008 by nwoods

Dan Chapman has done a tutorial on upgrading the factory subwoofer in the Land Rover LR3.  There are a couple of sub’s that will “drop-in” the OEM location, but that’s not Dan’s style.. :-)

Here is the link to DWEB.

How to Change Your LR3 Brake Pads

Posted in LR3 Tips & Help, Land Rover on June 18th, 2008 by nwoods

There is an excellent post on DWeb by Robert Page on how to replace the brake pads on the LR3, complete with tools list and part numbers.  Thanks Robert!
I have archived a PDF copy of this thread, with the full size photos here.

Viair 400c verses 450c

Posted in Jeep, LR3 Tips & Help, Land Rover, Tires, mods on June 18th, 2008 by nwoods

I have a Jeep with 35″ tires, and an LR3 with 31.5″ tires. I have on board air in each vehicle, but slightly different set-ups. Today I tested them head to head to see what could be learned.

  • Viair 400c hardmount, no tank. Direct hose connection
  • Viair 450c hardmount, 2.0 gallon onboard tank, typically charged between 100-125psi for each test.
  • Tire A: Cooper Zeon LTZ - 285/60/18
    31.6″ tire, 6.7″ sidewall, 11.2″ wide
  • Tire B: ProComp Xterrian - 315/70/17
    34.4″ tire, 8.7″ sidewall, 12.4″ wide (35/12.5/17)

The Viair 400 fills Tire A as follows:

- 15psi to 42psi: 3:15 minutes (typical sand pressure)
- 25psi to 42psi: 2:30 minutes (typical off road pressure)

The Viair 450 fills Tire A as follows:
- 15psi to 42psi: NOT TESTED (typical sand pressure)
- 24psi to 42psi: 4:30 minutes (typical off road pressure) The Viair 400 fills Tire B as follows: (typical off road pressure)
- 12psi to 32psi: 3:28 min The Viair 450 fills Tire B as follows: (typical off road pressure)
- 12psi to 32psi: 3:45 minutes (First tire with charged air tank)
- 12psi to 32psi: 4:47 minutes (tires #2 - 4) Fun facts:
- For the Viair 450 to fill the 2 gallon tank from 0-125psi takes 1:45 minutes
- For the large 35″ tires to deflate from 32psi to 12psi using Stauns: 5:30 minutes (seems like forever!)
- For the smaller 31.5″ tires to deflate from 42psi to 25psi using Stauns: 2:20 minutes
- For the smaller 31.5″ tires to deflate from 42psi to 15psi using Stauns: 4:40 minutes
- The 400c is rated for about 30 minutes continuous use before it reaches critical temp and shuts off. I can easily fill all the tires on two trucks in that time.
- The 450c is rated for 120 minutes continuous use, and may possibly keep going at cooler air temps.

Summary:

- The 400 fills the smaller tires twice as fast as the 450, and about a minute faster on the larger tires than the 450.
- Having the air tank helps the pump run less and keep cooler, thus running longer.

I think a good combo is the 400c with a 2 or 2.5 gallon tank is a great set up to fill tires and run air tools if you are going to using it for time intervals under 30 minutes.

How to drive the Land Rover LR3/RRS in Sand

Posted in LR3 Tips & Help, Land Rover, Pismo on April 11th, 2008 by nwoods

A number of people have ventured out onto the dunes in their shiny new “Go Anywhere” Land Rover LR3 or Range Rover Sport, only to be stuck in sand and teased by all the Jeep and Toyota guys, or worse, pre-IFS Land Rover owners! I see this discussion pop up on forums all over the world. So to help, here is my quick primer for newbies on how to drive in sand with this modern vehicles and all their high-tech electrowizardry:

The stock Goodyear Wrangler HP’s are going to disappoint you in the sand (and everywhere else too!). The Nitto Terra Grappler, Copper Zeon LTZ’s, or BFG AT’s, etc… are all MUCH better tires.

Once you are out on the sand, try experimenting with:
1. Air way way down - 15 to 20 PSI
2. Use Sand Mode with your Terrain Response, because it disables DSC
3. Physically turn off DSC
4. Use Low range
5. Use Command Shift. Your truck will work best in deep sand in 2nd or 3rd gear.
6. Keep the rev’s up! If you are hitting the rev limiter on occasion (hill climbs) you are doing it right.
7. Momentum is your friend
8. Know what is on the other side! If you crest a dune you don’t recognize, assume it is a sheer drop off on the other side.
9. Have a portable air compressor with you.
10. Have a large plywood plate (18″ sq) with you to act as a base for your tire jack should you need to change a tire or lift your wheels out of a hole
11. Buy a nice bottle jack to replace the silly sissor lift contraption Land Rover provides
12. Full size spare tire!
13. Buy a nice 30′ recovery strap, and at least two shackles to fit on the front or rear recovery points (they are hidden behind the plastic panels that easily come off with a large flat blade screwdriver or a small coin (10 cent dime works great!)

Photos of Pismo Beach with an LR3:
http://blog.nextstepdesigns.com/?cat=15

Cheers,

NW

LR3 wheel & tire specifications and options

Posted in LR3 Tips & Help, Land Rover, Tires, mods on March 14th, 2007 by nwoods

Updated 01/23/2009 - The single greatest improvement to the LR3 that you can make is to replace the OEM tires. The stock Goodyear HP Wranglers are just not up to the task of supporting this 6,000 lbs vehicle. I am frequently asked about tire and rim size options for the LR3. Here are the specifications for the stock 18″ and 19″ wheels that fit the Land Rover LR3/Discovery III. This information has been compiled from reports posted on various forums. I have not personally verified each tire/wheel size combination. I personally have used the 285/60/18 Nitto Terra Grapplers and more recently the Cooper Zeon LTZ’s in the same size. I like them both. The Nitto’s are noticeably stiffer, and potentially offer more durability (10 plys), but the Coopers have better traction and better road handling and noise. I think the Coopers have softer construction, but more durable tread compounds, whereas the Nittos are softer rubber, but much stiffer belting and construction. On the road and on the trail, the Coopers are more pliant and softer.  My Nitto’s “chunked out” quite a bit, and needed to be replace after 30,000 miles. After 34,000 miles on the Coopers, they still look quite good, and have lots of life left in them.  I’m very impressed with the Coopers, but you really can’t go wrong with either tire IMHO.  If you are looking for something fairly aggressive for off road, the Goodyear MTR’s are finally available in the US in 18″ and 19″ wheel sizes that actually fit the LR3! For a slightly milder tread pattern, the Goodyear Silent Armors are well regarded. I have taken the GY SA’s through challenging trails and while lateral traction is not on par with the Coopers or BFG All Terrains, they certainly do very well for a street oriented tire, and offer great road handling.
Wheel specifications:
- Pattern: 5 lug
- Pitch Circle Diameter: 120mm
- Offset is 53P (approximately 165mm or 6.5″ +/-)
- Load rating: 110 - 112
- Speed rating: H or higher

Tire Options:
Generally, you are limited to just under 32″ dia tires for the LR3. People have reported minor rubbing with 32″ tires, and slight rubbing with 31.5″ tires. The following information does not include the 17″ wheel option for base spec models (which are not common in the USA).

General size comparison numbers:
Tire size calculator: http://www.1010tires.com/tiresizecalculator.asp
- 255/60/18 or 255/55/19 stock OEM tire size = 30.04″
- 265×60x18 = 30.5″
- 275×60x18 = 31″
- 285×60x18 = 31.46″
- 275×65x18 = 32″ (probably too big)

NOTE: Tire Chains will not fit on a tire that is 285mm wide.  If you use your LR3/RRS in areas likely to require snow chains, the widest tire you can safely accommodate is 265mm wide (about 10.5″ wide at the top), and 31″ or less in diameter.

UpdateThis is an interesting test of three tires typical to Land Rovers:

Tire options - 18″ rims

Tire options - 19″ rims - stock size is 255/55/19 (30″ x 10″)

Cooper Zeon LTZ’s:
Cooper Zeon LTZ's

Nitto Terra Grappler (on LR3):
Nitto Terra Grappler