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1richard1

Member Since: 10 Sep 2019
Location: oldbury
Posts: 178

2007 Range Rover Sport TDV6 HSE Stornoway Grey

275/40/R20 change

Hi all i'm currently running 275/40/R20s i've read going to 275/45/r20s there is no issues with rubbing etc, could i go for 275/50/R20s or would this cause rubbing on full lock?

Sun Aug 30 2020 8:31am

Drewlr4

Member Since: 05 Aug 2020
Location: South Devon
Posts: 55

Im running 255 55 20 with no issues if that helps, which i believe is the correct tyre for 20's

Mon Aug 31 2020 9:54am

Tyrefitter

Member Since: 19 Jul 2015
Location: Bridlington East Yorkshire
Posts: 3677

2013 Range Rover Sport SDV6 Autobiography Fuji White

I’m sure the rims with running 275 are wider than the 255 when the vehicle was new.If you have 275’s on now your best bet is 45’s as they are more comfortable than the 40’s. Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

Mon Aug 31 2020 10:04am

1richard1

Member Since: 10 Sep 2019
Location: oldbury
Posts: 178

Yes looking for a bit more side wall, and all 4 corners will need to be changed soon just lookin at my options.

Mon Aug 31 2020 12:31pm

Seatown

Member Since: 15 Mar 2019
Location: Moray - if you're a courier, yes it's mainland UK & no it's not in the Highlands
Posts: 100

2010 Range Rover Sport TDV8 HSE Stornoway Grey

Drewlr4 wrote:
Im running 255 55 20 with no issues if that helps, which i believe is the correct tyre for 20's

Tyrefitter wrote:
I’m sure the rims with running 275 are wider than the 255 when the vehicle was new.If you have 275’s on now your best bet is 45’s as they are more comfortable than the 40’s.

On the L320 the OE 20 inch rims running the factory fit 275/40s are 9.5J. On the L494 the OE 20 inchers run 255/50 and are 8.5J I believe.

p.s. IIRC the offsets are et53 and et47 respectively 2010 TDV8 - current - my first RRS, loving it so far......
2005 Cayenne S - handling defied physics and what a sound, so sod the mpg!
1995 Disco TDI- surprisingly reliable, shame about the peeling dash & other trim
Lots of other non 4X4's in between times.........

Mon Aug 31 2020 4:24pm

Col

Member Since: 02 Sep 2012
Location: Hawkes Bay NZ
Posts: 4968

2013 Range Rover Sport Supercharged Autobiography Santorini Black

Re: 275/40/R20 change

1richard1 wrote:
Hi all i'm currently running 275/40/R20s i've read going to 275/45/r20s there is no issues with rubbing etc, could i go for 275/50/R20s or would this cause rubbing on full lock?

I have been running 275/45 x 21" wheels and tyres from a L494 on a L320 for 5 years and had no issues or rubbing in any way, even lowered the suspension slightly. The overall diameter of the 275/45 x 21" is approx. 781mm on a 275/50 x 20" it is 783mm so you should not be a problem with dia. although there is a 4mm offset difference between the 21" rim for the L494 and 20" rim for the L320 don't think should be a problem as the tyre width on the L320 is 275 on a 20" rim anyway.

Cheers
Col

Mon Aug 31 2020 10:59pm

andyslandy

Member Since: 20 Oct 2019
Location: Chesterfield
Posts: 142

2012 Range Rover Sport SDV6 SE Tonga Green

Seatown is right 275 is 9.5 and 255 is 8.5, currently going through this myself.

Thu Sep 03 2020 7:57am

Tubby-1

Member Since: 17 Mar 2019
Location: isle of wight
Posts: 5

check with an online tyre calculator as to what will happen with different profiles as mine is running 255 55 20 and is doing 76 mph with speedo showing 70mph, checked with garage and they cant adjust the speedo with the iid tool as the profile is wrong for my motor https://www.tyresizecalculator.com/tyre-wh...calculator

Wed Sep 09 2020 11:54am

tsinc80697

Member Since: 10 Aug 2020
Location: Manchester
Posts: 57

2013 Range Rover Sport 4.4 V8 Autobiography Firenze Red

You can see the difference between wheel and/or tyre sizes here - https://www.willtheyfit.com/

Found it the easiest site to use and have used it for years!

Fri Sep 11 2020 3:19pm

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