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clarkey1



Member Since: 14 Feb 2018
Location: Bucks
Posts: 25

United Kingdom 
27540R20 or 275/45R20. ?

Hi,
I was wondering about over sizing the tyres;-

1. To make a slight improvement on ride quality
2. bigger tyre in wheel arch looks better.

So does running the oversized tyre cause any problems with any electronic systems like the stability control programme (because of the change in wheel speed) ?

is a 275/50 R20 out of the question ? (I think it would look ridiculous anyway)

thanks


Last edited by clarkey1 on Wed Feb 14 2018 5:36pm. Edited 1 time in total

Post #548592 Wed Feb 14 2018 3:19pm
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RRSTDV8



Member Since: 13 Aug 2011
Location: Northamptonshire
Posts: 6003

United Kingdom 2008 Range Rover Sport TDV8 HSE Stornoway Grey

So long as all tyres are the same, DSC etc won't care. A change in sidewall height will alter the speedo but not by enough to worry about. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #548599 Wed Feb 14 2018 5:04pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 1384

Wales 2005 Range Rover Sport Supercharged HSE Java Black

275 45 much better ride Thumbs Up

Post #548601 Wed Feb 14 2018 5:16pm
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clarkey1



Member Since: 14 Feb 2018
Location: Bucks
Posts: 25

United Kingdom 

Thanks for the reply,
So I could go to 275/50R20 and there would be no problems other than a speedo error.
that is a tyre diameter of 30.8 inches,

Im fairly sure people run with 32 inch off road tyres don't they ?
Thanks

Post #548602 Wed Feb 14 2018 5:18pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 1384

Wales 2005 Range Rover Sport Supercharged HSE Java Black

Not without mods full fat range rover use that size i think Thumbs Up

Post #548603 Wed Feb 14 2018 5:22pm
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clarkey1



Member Since: 14 Feb 2018
Location: Bucks
Posts: 25

United Kingdom 

ok, thanks for the replies, so quick to.
cheers Very Happy

Post #548605 Wed Feb 14 2018 5:28pm
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GodivaNige



Member Since: 14 May 2016
Location: Warwickshire
Posts: 373

England 2009 Range Rover Sport TDV8 HSE Buckingham Blue

Don’t forget to inform your insurer if moving away from standard fitment.

Post #548606 Wed Feb 14 2018 5:40pm
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fdhadi



Member Since: 17 Feb 2015
Location: Wigan
Posts: 178

United Kingdom 2011 Range Rover Sport 3.0 TDV6 HSE Stornoway Grey

Agree with Geoff, much better ride.

Post #548639 Thu Feb 15 2018 8:35am
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Guyzer73



Member Since: 04 Jul 2009
Location: Muscat
Posts: 671

Oman 2006 Range Rover Sport Supercharged Vesuvius Orange

Ok, so I run 275/55R20s but have raised the suspension by 10 or 15mm to compensate.

However, in the past I have had 285/50R20s and these ran no problem except for a slight rub on full lock, but I suspect this is due to the bumper not being straight rather than anything else...

Oh and I ran 275/40R22s...

That equates to the following diameters (approximately):

275/55R20 = 31.9" diameter

Click image to enlarge

275/40R22 = 30.7" diameter
Click image to enlarge

285/50R20 = 31.2" diameter
*Now Added for Completeness*



Hope that helps. I'd personally now go for a 275/45 or 275/50 R20 tyre for road use also, the 22s look nice but the ride is trashed...

Cheers

Guy 2006 RRS S/C CONSTANTLY under modification...
1994 RRC 4.2l not LSE sadly gone but not forgotten
LR Defender 300Tdi - affectionately know as "The Black Beast"

Last edited by Guyzer73 on Tue Mar 13 2018 8:28am. Edited 1 time in total

Post #548641 Thu Feb 15 2018 8:56am
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clarkey1



Member Since: 14 Feb 2018
Location: Bucks
Posts: 25

United Kingdom 

Mate !

Thanks for taking the time to put this on here.

Thats a great help.

Many Thanks

Bow down Bow down

Post #548726 Thu Feb 15 2018 6:54pm
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clarkey1



Member Since: 14 Feb 2018
Location: Bucks
Posts: 25

United Kingdom 

Guy,

Finally got round to changing the tyre. Well Happy Laughing

Thank you for the help posting your pics.

here it is...

Click image to enlarge

Post #551046 Sun Mar 11 2018 3:48pm
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Winston



Member Since: 03 Nov 2016
Location: Nairobi
Posts: 6

Kenya 2010 Range Rover Sport 3.0 TDV6 Autobiography Zermatt Silver

Hi Guy, Is there a noticeable difference in the ride? Cheers

Post #551160 Tue Mar 13 2018 6:57am
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Guyzer73



Member Since: 04 Jul 2009
Location: Muscat
Posts: 671

Oman 2006 Range Rover Sport Supercharged Vesuvius Orange

Winston, between which tyre sizes?

Basically, the 22"s were the most sporty with great grip and handling - what you'd expect with road tyres. But the ride was too harsh.

Both the 285/50s and 275/55s provide a very plush ride quality but obviously lack in the handling department due to the taller sidewalls. But then again the Sport isn't meant to be a Jaguar XKR, even if the shared the same engine...

The 275/45s that many go for is probably the best compromise with regards handling and ride quality. Pus you may even find some semi off road AT tyres in the size. I can't comment on this first hand though as I have never installed tyres of this dimension.

Hope that helps a little.

Cheers


Guy 2006 RRS S/C CONSTANTLY under modification...
1994 RRC 4.2l not LSE sadly gone but not forgotten
LR Defender 300Tdi - affectionately know as "The Black Beast"

Post #551177 Tue Mar 13 2018 8:32am
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Winston



Member Since: 03 Nov 2016
Location: Nairobi
Posts: 6

Kenya 2010 Range Rover Sport 3.0 TDV6 Autobiography Zermatt Silver

Thanks Guy good to know, I have 20" Wheels with the 40 profile in Nairobi, there is too many potholes here and the ride is not great so will look to go up to a 45 and maybe an AT tyre depending on whats available locally

Best regards

Post #551193 Tue Mar 13 2018 11:23am
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Cymruambyth



Member Since: 27 Feb 2017
Location: North Wales
Posts: 1298

Wales 2006 Range Rover Sport Supercharged HST Zermatt Silver

Nothing wrong with the ride on 22`s Rolling Eyes Steve.


2006 Zermatt Silver, Range Rover Sport HST 4.2 Supercharged on 22" Stormer Alloys.

Post #551196 Tue Mar 13 2018 12:16pm
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