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Plazmapete



Member Since: 05 Jun 2016
Location: Staffordshire
Posts: 84

United Kingdom 2006 Range Rover Sport TDV6 HSE Java Black
Different tyre sizes

I need to replace my 2 front tyres. At the moment they are 275-40-R20
Can I fit 275-45-R20 and leave the rears for a month or so and then change the rears? Or will it not be happy running different sizes. Thanks. New alternator.
Gearbox flush.

Post #520800 Mon Mar 13 2017 6:46pm
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Tyrefitter



Member Since: 19 Jul 2015
Location: East Yorkshire
Posts: 1154

United Kingdom 2013 Range Rover Sport Supercharged Autobiography Fuji White

No,,,,they all need to be same size,,if you mix them it will Kn@@@@r your drive train.

Andy 2014 RRS SC santorino,coris roof.
2016 VW Amarok Highline,candy white
2014 Evoque D-Lux Fuji
Previous motor.
2014 RRS AB FUJI
2012 RRS Dynamic red edition Fuji
2012 RRS SE santorino
2015 Navara White
2008 RRS white TDV8
2007 RRS black TDV8
2002 RR Vogue
1996 P38 2.5 HSE.

Post #520802 Mon Mar 13 2017 6:53pm
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Pufftmw



Member Since: 23 May 2012
Location: London
Posts: 488

United Kingdom 2007 Range Rover Sport TDV6 HSE Stornoway Grey

Quote:
No,,,,they all need to be same size,,if you mix them it will Kn@@@@r your drive train


Cock... 55 profile on my current set and 50 on the spare, which I've run for 50 miles back from Cambridge last night. Got the puncture fixed, better swap over now.

Post #520807 Mon Mar 13 2017 8:21pm
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DrRob



Member Since: 23 Feb 2011
Location: Hampshire
Posts: 1361

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Big Cry GONE - SDV6 HSE MY2012 in Orkney Grey.
1993 200Tdi Tdi Range Rover - a proper Rangie!
1949 Series One 80" in family since 1975! Where it all began.....

Post #520811 Mon Mar 13 2017 8:40pm
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Plazmapete



Member Since: 05 Jun 2016
Location: Staffordshire
Posts: 84

United Kingdom 2006 Range Rover Sport TDV6 HSE Java Black

Isn't the spare a different size anyway???
When I first got my sport the spare was 19 INCH. New alternator.
Gearbox flush.

Post #520815 Mon Mar 13 2017 8:49pm
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Tyrefitter



Member Since: 19 Jul 2015
Location: East Yorkshire
Posts: 1154

United Kingdom 2013 Range Rover Sport Supercharged Autobiography Fuji White

Yes but the rolling circumference of the 19 would have been same as the 20.

Andy. 2014 RRS SC santorino,coris roof.
2016 VW Amarok Highline,candy white
2014 Evoque D-Lux Fuji
Previous motor.
2014 RRS AB FUJI
2012 RRS Dynamic red edition Fuji
2012 RRS SE santorino
2015 Navara White
2008 RRS white TDV8
2007 RRS black TDV8
2002 RR Vogue
1996 P38 2.5 HSE.

Post #520817 Mon Mar 13 2017 9:01pm
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grey17



Member Since: 18 Jul 2016
Location: London
Posts: 33

United Kingdom 2006 Range Rover Sport 4.4 V8 HSE Zermatt Silver

Plazmapete wrote:
Isn't the spare a different size anyway???
When I first got my sport the spare was 19 INCH.


Hi mate.

You are quite correct in thinking that the rolling circumferences are different. Have a look on any tyre size comparison site and you'll get all the info you need.
I assume Land Rover tested running the spare 19" on the same axle as a 20" with no ill effects to be happy to market the vehicle so equipped.

The tyres ARE different to varying degrees depending on your set-up.

Best.

G

Post #521103 Thu Mar 16 2017 3:33pm
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