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Julio



Member Since: 24 Jul 2020
Location: Mere
Posts: 13

England 2007 Range Rover Sport TDV8 HSE Zermatt Silver
275/40/20 V 255/55/20 ??

My 2007 RRS TDV8 is presently running on 275/40/20 but I want to replace 20" wheels and tyres. Lots of sets on Fleabay shod with 255/55/20, will they work ok on my car ? Understand they be narrower and taller, but the items I'm looking at are much more plentiful than 275's ...

Post #602726 Tue Aug 04 2020 4:25pm
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knwatkins



Member Since: 09 Sep 2018
Location: Poole, Dorset
Posts: 1138

United Kingdom 2010 Range Rover Sport 3.0 TDV6 HSE Stornoway Grey

255/55/20 fit fine on the L320.

I have them on mine...

Click image to enlarge



Click image to enlarge
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

Post #602733 Tue Aug 04 2020 5:48pm
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Julio



Member Since: 24 Jul 2020
Location: Mere
Posts: 13

England 2007 Range Rover Sport TDV8 HSE Zermatt Silver

Thanks Kev,

I'll take the plunge then. Hope to stick with the V spoke as per original spec...?

Post #602737 Tue Aug 04 2020 6:11pm
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shepp



Member Since: 15 Nov 2010
Location: Bingley
Posts: 440

United Kingdom 2006 Range Rover Sport Supercharged Java Black

Got them on mine as well, no issues at all. Just better over the potholes and no chance of curbing the alloys. MY12 RRS HSE
Gone 4.2 supercharged RRS
Gone 90
Gone s2000

Post #602743 Tue Aug 04 2020 7:49pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 1534

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

A word of caution - just make sure they fit over your Brembos Robin
2008 Range Rover Sport TDV8
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #602752 Tue Aug 04 2020 9:45pm
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shepp



Member Since: 15 Nov 2010
Location: Bingley
Posts: 440

United Kingdom 2006 Range Rover Sport Supercharged Java Black

Why do you want to fit 20inch tyres to brembo's

Very Happy MY12 RRS HSE
Gone 4.2 supercharged RRS
Gone 90
Gone s2000


Last edited by shepp on Wed Aug 05 2020 12:35pm. Edited 2 times in total

Post #602763 Tue Aug 04 2020 10:55pm
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Pufftmw



Member Since: 23 May 2012
Location: Carmarthenshire
Posts: 1051

United Kingdom 2007 Range Rover Sport TDV6 HSE Stornoway Grey

Eaters wrote:
A word of caution - just make sure they fit over your Brembos


Rolling with laughter Its really got to you mate! You need to see a doctor...

OPs on 20s and talking tyres not rims - fine for Brembos

Post #602777 Wed Aug 05 2020 11:00am
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 1534

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

Rolling with laughter You’re right Puff. I was well bitten and see issues with anything to do with wheels and tyres. Guess I’ll go back to my padded cell. I’m not allowed out very often😳 Robin
2008 Range Rover Sport TDV8
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #602778 Wed Aug 05 2020 11:14am
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riverblanche



Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1134

United Kingdom 
Re: 275/40/20 V 255/55/20 ??

Julio wrote:
replace 20" wheels and tyres. ..


Robin's cautionary warnings may need to be observed Laughing changing wheels & tyres Question

Stick with your own wheels and just get new tyres, 255/55 is about +30mm on your radius/height

Thumbs Up Porsche Cayenne 2022
gone Porsche Cayenne 2020
gone Corris Grey HSE Dynamic 2016
gone Ipanema HSE lux 2010
gone Rimini HSE 2005
!!

Post #602786 Wed Aug 05 2020 12:38pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 1534

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

Its always puzzled me why my cruise control has to be set at 73mph to do an actual 70mph on the road (and a similar discrepancy for other speeds). Could it be that with a slightly bigger diameter using 255 55 20s the cruise control setting will align with the speed??? Slightly Off Topic - sorry Robin
2008 Range Rover Sport TDV8
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #643185 Wed Jul 10 2024 7:44am
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wheelfinity



Member Since: 10 Jul 2024
Location: London
Posts: 6

United Kingdom 2013 Range Rover Sport Supercharged Java Black

Your speedo reads the speed by checking how fast your wheels are turning. So if you put bigger wheel, with the same amount of wheel turns, you will be doing longer distance so driving faster. And 255/55R20 tyres have bigger diameter than 275/40R20, hence why there is a difference.

Post #643189 Wed Jul 10 2024 10:51am
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wheelfinity



Member Since: 10 Jul 2024
Location: London
Posts: 6

United Kingdom 2013 Range Rover Sport Supercharged Java Black

255/55R20 fill the arches better and ride is more comfortable. However I think you should inform your insurance company about the change as even if they fit, this is standard size for L494 but not L320.

Post #643190 Wed Jul 10 2024 10:54am
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Lrstaylor



Member Since: 10 Mar 2022
Location: Kent
Posts: 323

United Kingdom 2006 Range Rover Sport Supercharged Bali Blue

I'm putting 255 55 20 at on my spare wheels for winter insurance company didn't want to know tyresxare higher speed rated than the car is so no issue but different companies different rules always good to check just incase.

Post #643191 Wed Jul 10 2024 3:40pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 1534

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

wheelfinity wrote:
Your speedo reads the speed by checking how fast your wheels are turning. So if you put bigger wheel, with the same amount of wheel turns, you will be doing longer distance so driving faster. And 255/55R20 tyres have bigger diameter than 275/40R20, hence why there is a difference.



Ah. That makes sense. However I should have said, in my earlier post, that the speedo reads correctly. It's just the cruise control display behind the steering wheel which says I have set, for example, 73mph when the speedo says I'm doing 70mph (and Waze agrees with the speedo). Not a major issue, just interesting. I wonder where the cruise control gets its info from? Robin
2008 Range Rover Sport TDV8
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #643197 Wed Jul 10 2024 5:40pm
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Col



Member Since: 02 Sep 2012
Location: Hawkes Bay NZ
Posts: 4910

New Zealand 2013 Range Rover Sport Supercharged Autobiography Santorini Black

My cruise control is the same have to set slightly higher to get actual required speed, can't remember if it's always been like it or just since changed wheel/tyre size , when speedo reads about seventy according to tomtom navigation etc. so just put it down to built in tolerances same as the speedo which can read slightly fast but not slow, or I think that's how it used to be as a legal/use and construction requirement in day's of old.

Cheers
Col

Post #643200 Wed Jul 10 2024 10:24pm
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