Please Recommend Larger Tire Size for Disco 5 W/O Lifting - Land Rover Forums : Land Rover and Range Rover Forum
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post #1 of 39 (permalink) Old 08-17-2017, 08:44 AM Thread Starter
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Please Recommend Larger Tire Size for Disco 5 W/O Lifting

Can everyone please recommend a larger tire size for my Discovery 5? It currently has 255/55R20 and I would like to get bigger AT tires but I cannot add a lift. Any recommendations on tires would be a bonus.

Thank you!
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post #2 of 39 (permalink) Old 08-17-2017, 10:10 AM
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you might be able to get away with a 245/60-20 (31.6") or 275/55-20 (31.9")

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post #3 of 39 (permalink) Old 08-18-2017, 05:52 AM
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With a lift you can go max 285 50 20
Dave

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De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

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post #4 of 39 (permalink) Old 08-18-2017, 09:00 AM
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I plan to fit 275/55-20's to my vehicle. Lots of choices in that size. Here are the ones I would consider:

Continental TerrainContact A/T - aramid fiber armored
Goodyear Wrangler All-Terrain Adventure - Kevlar-armored, have run these offroad a lot and they are awesome
Hankook Dynapro AT-M
BFG All-Terrain T/A KO2 - these don't last all that long on heavy vehicles, but they're great off-road and they're three-peak mountain/snowflake rated, and they're supposedly not terrible all-seasons.
Nitto Terra Grappler G2
Nokian Rotiiva AT - new tire, but Nokian makes excellent winter tires.

Yes, I do take it off-road.
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post #5 of 39 (permalink) Old 08-18-2017, 12:44 PM Thread Starter
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SafariDave, are you meaning to say WITHOUT a lift that the maximum size would be 285/55/20? Do you have experience or knowledge that this is accurate or are you making any assumptions? Thank you.
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post #6 of 39 (permalink) Old 08-18-2017, 01:05 PM
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Quote:
Originally Posted by rsclark777 View Post
SafariDave, are you meaning to say WITHOUT a lift that the maximum size would be 285/55/20? Do you have experience or knowledge that this is accurate or are you making any assumptions? Thank you.
I never said without a lift.
here you go!

http://www.landroversonly.com/forums...-tires-143249/

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
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(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #7 of 39 (permalink) Old 08-19-2017, 11:34 AM
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OP was for largest tire without a lift.

Yes, I do take it off-road.
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post #8 of 39 (permalink) Old 11-26-2017, 12:38 PM
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I’m sorry but I don’t understand why some of you says that to go 285/50R20 a lift is needed, from factory you can go 285/40R22 that has the same dimensions.
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post #9 of 39 (permalink) Old 02-04-2018, 09:29 PM
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Quote:
Originally Posted by rsclark777 View Post
Can everyone please recommend a larger tire size for my Discovery 5? It currently has 255/55R20 and I would like to get bigger AT tires but I cannot add a lift. Any recommendations on tires would be a bonus.

Thank you!
Do you have the Capability Package (i.e., with air suspension)? If so, the lowered setting might not have sufficient clearance for larger tires.

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post #10 of 39 (permalink) Old 02-05-2018, 01:04 AM
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I'd strongly rercommend to not play with different dimension tyres than those recommended by the vehicle's manufacturer on any vehicle with such complex electronic managements... all those systems were calibrated from factory for standard dimension tyres and exceeding that will mix up the whole management and nothing will work 100% OK anymore, you might gain ONLY few inches of ground clearance and ruin other more important capabilities of the vehicle which will be just a bit taller but less responsive ... that's a fact

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ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.
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post #11 of 39 (permalink) Old 02-05-2018, 04:47 AM
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Originally Posted by sierrafery View Post
I'd strongly rercommend to not play with different dimension tyres than those recommended by the vehicle's manufacturer on any vehicle with such complex electronic managements... all those systems were calibrated from factory for standard dimension tyres and exceeding that will mix up the whole management and nothing will work 100% OK anymore, you might gain ONLY few inches of ground clearance and ruin other more important capabilities of the vehicle which will be just a bit taller but less responsive ... that's a fact
If that were true then there would be appropriate warnings in the Land Rover owners manual, and Land Rover dealers in America wouldn't be routinely performing suspension lifts and installing larger tyres. Is it possible that Land Rover computers can be reprogrammed to accommodate vehicle configuration changes, as is the case with other vehicles sold here?

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post #12 of 39 (permalink) Old 02-05-2018, 04:50 AM
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Originally Posted by sierrafery View Post
I'd strongly rercommend to not play with different dimension tyres than those recommended by the vehicle's manufacturer on any vehicle with such complex electronic managements... all those systems were calibrated from factory for standard dimension tyres and exceeding that will mix up the whole management and nothing will work 100% OK anymore, you might gain ONLY few inches of ground clearance and ruin other more important capabilities of the vehicle which will be just a bit taller but less responsive ... that's a fact
If that were true then there would be appropriate warnings in the Land Rover owners manual, and Land Rover dealers in America wouldn't be routinely performing suspension lifts and installing larger tyres. Is it possible that Land Rover computers can be reprogrammed to accommodate vehicle configuration changes, as is the case with other vehicles sold here?

Nice avatar!

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post #13 of 39 (permalink) Old 02-05-2018, 06:32 AM
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Originally Posted by ar077
If that were true then there would be appropriate warnings in the Land Rover owners manual, and Land Rover dealers in America wouldn't be routinely performing suspension lifts and installing larger tyres.
It is true and tested live, the breaking distance, consumption and EGT level is increased with a similar percentage like the differnece in the tyre's dimensions while the TC and other dynamic systems are less responsive, engine temps are rising as well

if you read the whole workshop(not only owner's) manual and you'll understand how the managements are working you'll find more warnings about messing with tyre dimensions even with pressures

For me the fact that owners have fitted larger tyres and nothing bad happened SO FAR it's not an evidence that it's OK

about LR dealers who are fitting lift kits and larger tyres i can't comment....

as about owner's handbook, maybe you didnt read it carefully, IMO there are appropriate warnings, here is from the D4 one cos that's what i had saved but i checked and for D3 is exactly the same(copy/paste) warning, the only difference is the 8.5J tyres which are only for D4 (the red line is made by me)
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My friends call me Fery

2000 Discovery Td5 ES manual

Hawkeye v.6, Nanocom EVO,
VDM UCANDAS, oscilloscope


if you think my english is peculiar it means you didnt hear my japanese

ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.

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post #14 of 39 (permalink) Old 02-05-2018, 04:56 PM
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The new Discovery with the capability package is more off-road capable than any other land Rover or Range Rover sold in America, but the stock tires are not optimum for off road excursions. The increased capability that comes with more off-road suitable tires is worth the small sacrifice in fuel economy. The other adverse effects you cite are so insignificant as to not even be noticeable. If I'd wanted an everyday SUV for on-road use only, I could have gotten one for less than half the price of the Discovery.

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post #15 of 39 (permalink) Old 02-05-2018, 07:13 PM
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Someone better warn Land Rover the Discovery 5 SVX is coming from the factory with nearly 32" tires.

Lifting a D5 and putting some slightly larger tires isn't that big of a deal. Ford Explorers have no issue with it

1972 MGB
2006 Bonatti Grey LR3 Proud Rhino Bumper, Baja Rack and TF underbody skid plates almost 33's lol
2007 Chawton White LR3 Proud Rhino lift rods
1983 Trident Green 110, TerraFirma suspension, and bumpers
1991 Range Rover Classic Hunter Eastnor Green


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