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hamiamham



Member Since: 28 Apr 2021
Location: Nantucket
Posts: 4

United States 2008 Range Rover Supercharged 4.2 SC V8 Buckingham Blue
Tires for road and soft sand beach

I have a 2008 Supercharged (full sized) that came standard with 20" wheels and 255/50R20 tires. I am in the US so it is NAS and left-hand drive. As far as I know we don't have any "tire police" here so I am free to choose any tire that fits...

Thus far I have chewed thru 2 sets of tires by doing sidewall damage to the tires while driving aired down on the beach.

So a couple of questions:

Assuming no lift kit or other modifications, what tire height can I fit. I am thinking I would like to keep the 255mm width but increase the ratio from 50 to 55 or even greater.

I need to air down to at least 20psi but would prefer as low as 15psi; any recommended tire brands that have a sidewall that can handle this task?

I live on a small island off the coast of the Northeastern US. The max speed limit is 45mph and while we do get rain, it rarely snows.

Post #592627 28th Apr 2021 10:41pm
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northernmonkeyjones



Member Since: 24 Mar 2012
Location: derby
Posts: 8206

United Kingdom 2016 Range Rover Autobiography SDV8 Santorini Black

Plenty of folks run 255/55/20 on the 322, they are the standard fit on the 405 so folks bought the 405 alloys with the tyres and put them on the 322.

If you want to get a taller side wall then you could go smaller on the wheel. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Post #592629 28th Apr 2021 11:05pm
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hamiamham



Member Since: 28 Apr 2021
Location: Nantucket
Posts: 4

United States 2008 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Thanks for that. Any tires you can recommend?

Post #592676 29th Apr 2021 1:37pm
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bishbosh10



Member Since: 25 Apr 2013
Location: North Somerset
Posts: 269

United Kingdom 2011 Range Rover Vogue SE TDV8 Orkney Grey

32" seems to be the biggest practical diameter. Even then you might get rubbing at full lock / articulation. Rubbing is increased if you go wider for obvious reasons.

When getting bigger tyres think about what you'll do if (when? Shocked ) your EAS packs up and you are on the bump stops. If your tyres are in contact with the wheel arches you're in a world of pain!

Personally I would look at the smallest rims you can fit over your brakes and limit the overall diameter to something a bit less than 32". That way you'll get the deepest sidewall which will give you the most benefit when airing down. Obviously a robust tyre choice with decent side walls is a must. Bish.

2011 TDV8 Vogue SE

Post #592686 29th Apr 2021 2:11pm
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hamiamham



Member Since: 28 Apr 2021
Location: Nantucket
Posts: 4

United States 2008 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

I am going to order a 18" rim and have the mechanic test fit to my car. Assuming it fits I will have a number of tire choices. If it does not fit, I will go with a 19" wheel which - while not ideal - does allow me more side wall height with the same tire diameter. My air suspension has given out on me in the past so I would like to avoid the bump stop issue if I can.

Post #593782 10th May 2021 3:24pm
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Rosco



Member Since: 20 Jan 2012
Location: Beyond the wall.
Posts: 2356

United Kingdom 2011 Range Rover Vogue TDV8 Stornoway Grey

I am sure the only 18" that will fit over a supercharger brembos is the one made by Compomotive, I may be wrong and you may have different options over there Thumbs Up

Post #593784 10th May 2021 3:58pm
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northernmonkeyjones



Member Since: 24 Mar 2012
Location: derby
Posts: 8206

United Kingdom 2016 Range Rover Autobiography SDV8 Santorini Black

Pretty sure rosco is correct in his thinking.

Don’t think any L322 18” will fit, though you may find a D4 wheel does but I’m not 100%. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Post #593786 10th May 2021 4:07pm
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