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Kev H



Member Since: 26 Apr 2020
Location: Lichfield staffs
Posts: 12

United Kingdom 2008 Range Rover Sport TDV6 HSE Bonatti Grey
Spare wheel size ?

can someone tell me what is the correct size spare for my RRS tdv6 2008 on the car are 255/55/20 but the spare is 255/50/17 ? would i be able to use this in the event of a puncture ??,

Post #610467 Tue Feb 23 2021 5:12pm
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

I wouldn't, your current tyre diameter is 31", your spare 27", so I would expect the car to throw a hissy fit.

Dave 2010 3.6 TDV8 HSE (Gone)
2011 Discovery 4 Commercial SDV6 (Gone)
1980 OBLIC 4.0ltr Range Rover (went a long time ago)

Post #610468 Tue Feb 23 2021 5:25pm
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riverblanche



Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1133

United Kingdom 
Re: Spare wheel size ?

Kev H wrote:
spare is 255/50/17 ? ?,


are you sure Question Shocked

a 17" wheel sounds wrong with that tyre size, you should use a wheel tyre combination that matches the same size radius
it does NOT have to be the same size (255/55/20) but should match and a 255/55/20 has a radius of 394mm

dont think your size is a standard fit size either Question 255/50/19 369mm could have had 255/55/19 (G4's had them) 382mm

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edit. you could fit a 245/75/17 to that wheel to get a radius of 400mm so +6mm but I would check it actually fits on your car first and clears the brake calipers Question

. Porsche Cayenne 2022
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Post #610475 Tue Feb 23 2021 7:04pm
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Col



Member Since: 02 Sep 2012
Location: Hawkes Bay NZ
Posts: 4816

New Zealand 2013 Range Rover Sport Supercharged Autobiography Santorini Black

I think you would actualy struggle to get a 255/55 x 20" fitted under the car, I did manage to get a 275/45 x 21" in there but vert tight needed to use a Dremel to smooth a couple of welds off, and that according to some tyre size sites it is 781mm diam. and the 55 profile is 789mm.

Cheers
Col

Post #610481 Tue Feb 23 2021 9:08pm
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garrycol



Member Since: 30 Nov 2010
Location: Canberra
Posts: 1061

Australia 

While the base D3 came with 17" rims, I dont think 17" were ever fitted to the RRS as standard. So your spare is not original. As others have said the diameter difference is too much and will cause issues if used. Why not get a wheel and tyre combo the same as fitted in your car to use as your spare - you will have to leave it deflated to fit in the wheel well and carry a means of inflating it if needed. 07MY RRS TDV6
Arctic Frost
Aspen Interior

Post #610506 Wed Feb 24 2021 1:33am
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8798

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey
Re: Spare wheel size ?

Kev H wrote:
can someone tell me what is the correct size spare for my RRS tdv6 2008 on the car are 255/55/20 but the spare is 255/50/17 ? would i be able to use this in the event of a puncture ??,


The simple answer is no. A 17 inch rim won't fit over the brakes on a TDV8 for a start.

Assuming you've made a typo, the correct spare should be 255/50/19.

A 255/50/19 fitted to a RRS with 255/55/20 will cause the DSC to throw a wobbly. At 50mph, the speed difference will be about 4mph and that will definitely make it "not happy".

The original RRS, such as yours, never came with 255/55/20 - that's a size of the later current-shape RRS (the L494). Yours came with either 255/50/19 or 275/40/20. 275/40/20 on the road with 255/50/19 as a spare will work ok as the size is very close.

You can fit 255/55/19 road tyres and that will also fit in the spare tyre space under the boot - although it is tight (this is what I run). You can fit 275/45/20 on the road and I think that will also just fit in the spare so you could have matching tyres on the road and spare. 275/45/20 is a few mm smaller in diameter than the 255/55/19 so it should fit although it will stick down a bit so reducing clearance at the rear. Be useful if someone who has that size can confirm either way. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #610517 Wed Feb 24 2021 9:46am
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garrycol



Member Since: 30 Nov 2010
Location: Canberra
Posts: 1061

Australia 

He has a TDV6 not a TDV8 so 17" rims will fit. 07MY RRS TDV6
Arctic Frost
Aspen Interior

Post #610520 Wed Feb 24 2021 10:32am
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8798

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Ah, misread that. Mea culpa! 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #610528 Wed Feb 24 2021 1:21pm
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Kev H



Member Since: 26 Apr 2020
Location: Lichfield staffs
Posts: 12

United Kingdom 2008 Range Rover Sport TDV6 HSE Bonatti Grey

A big thanks to all of you that replied with advice and it is now clear my 17inch spare is about as much use as a rubber ladder, but before i go and buy a 255/50/19 for the spare can any one confirm it will definetly fit underneath my car inflated ?,

Post #610547 Wed Feb 24 2021 4:51pm
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

At 29" overall diameter it is less than my 275/45x21 by a little over 1 1/2"s, so I would say yes it will fit.

Dave 2010 3.6 TDV8 HSE (Gone)
2011 Discovery 4 Commercial SDV6 (Gone)
1980 OBLIC 4.0ltr Range Rover (went a long time ago)

Post #610548 Wed Feb 24 2021 5:13pm
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riverblanche



Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1133

United Kingdom 

Hi,
it will certainly fit its the standard size (I had the same size)
BUT
why would you buy one as it does not match the size you say is on your car so its still NO GOOD to you as a spare Shocked

A tin of gloop would be much cheaper and actually be of some use

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gone Corris Grey HSE Dynamic 2016
gone Ipanema HSE lux 2010
gone Rimini HSE 2005
!!

Post #610556 Wed Feb 24 2021 6:47pm
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Kev H



Member Since: 26 Apr 2020
Location: Lichfield staffs
Posts: 12

United Kingdom 2008 Range Rover Sport TDV6 HSE Bonatti Grey

Thanks for all your input i have now got a 255/50/19 spare and it does fit under the car and i know it is not the same size as the 255/55/20 that are on the car but surely the 19" is ok as a emergency get me home ??

Post #610711 Sat Feb 27 2021 2:39pm
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Dave-t



Member Since: 18 Jan 2020
Location: Glasgow
Posts: 436

United Kingdom 

I wouldn’t, all wheels should be doing the same rpm, near enough, you will have one that will do doing quite a bit more so you will risk damage to your diff and possibly transfer box. Whilst they are made to do different speeds, it is normally marginally different, or for short periods, not continuously Joined the X5 45e club
1994 Defender 90 300 tdi

Post #610717 Sat Feb 27 2021 4:13pm
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riverblanche



Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1133

United Kingdom 

Hi,
agree with Dave-T there is a 25mm difference in the Radius doubt the car will like that if you do use it, Whistle

to be honest you may have well stopped with the 17" rather that buy a 19" its not the size of the wheel that matters its the overall size Rolling Eyes

you could have bought a second hand tyre to go on the 17" wheel and it would have matched then Whistle

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 #610740 Sat Feb 27 2021 7:18pm
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Kev H



Member Since: 26 Apr 2020
Location: Lichfield staffs
Posts: 12

United Kingdom 2008 Range Rover Sport TDV6 HSE Bonatti Grey

Thanks to you both for the feedback this spare issue is a pain in the arse the only reason i bought a 19 inch was because a 20 would not fit under the car so i have got the biggest size under there that i can, and when you say the car wont like it well for a short slow distance will that matter ?

Post #610777 Sun Feb 28 2021 11:20am
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