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275 40 R20's for a D4
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buzz569
 


Member Since: 09 Nov 2010
Location: Midlands
Posts: 16

2010 Discovery 4 3.0 TDV6 GS Auto Unknown ColourDiscovery 4
275 40 R20's for a D4

I've the option of some 20" RR sport I think wheels with winter tyres 275 40 R20, any issues with fitting these on the D4 which is currently on standard 19's? Thanks for any advice
  
Post #18964772nd Jan 2018 11:23 am
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8669

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

RRS alloys are OK, but check tyre spec as 275/40's are 1) a tad small - 275/45x20 is better, and 2) check wieght rating - for a D4 you need 109 or above, 275/40's are likely to be 107 or lower.

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #18964792nd Jan 2018 11:32 am
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buzz569
 


Member Since: 09 Nov 2010
Location: Midlands
Posts: 16

2010 Discovery 4 3.0 TDV6 GS Auto Unknown ColourDiscovery 4

Thanks, if I take the wheels and look for new tyres what is the best all round size option? they will be purely used for winter trips to the Alps
  
Post #18964862nd Jan 2018 11:46 am
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8669

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

standard 20" tyres on a D4 are 255/50x20's but these are on 8.5" wide rims, whereas the RRS usually runs 9.5" wide, so 255 might be a bit too skinny - 275/45x20's are OK, as are 265/50x20's. Some folks run 285's.

If it were me I'd look for some 275/45x20's. A set of Wintracs here on fleebay:

https://www.ebay.co.uk/itm/AUDI-Q7-20-WINT...Sw6VRaOk~a

Hope that helps.

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #18964972nd Jan 2018 12:08 pm
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Space Cadet
 


Member Since: 05 Dec 2017
Location: Ingatestone
Posts: 243

United Kingdom 2014 Discovery 4 3.0 SDV6 XS Auto Santorini BlackDiscovery 4

I’m possibly looking at a set of “Style 9” RRS 20” 9.5J wheels, the offset is 53mm, it’s unclear though what the offset is my standard XS 19's? - is it likely that I will have any issues regarding this?

Thanks for the above advice regarding tyre sizes, ‘my’ wheels are advertised with new 275/40/20 tyres to be fitted but like you said a quick check on a tyre calculator site said that a 275/45/20 tyre would be almost identical radius to my standard 19’s therefore I will ask for 45’s rather than 40’s. Plus they’re 110 rather than 106 on the 40’s!
  
Post #19114456th Feb 2018 3:19 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 4717

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

275x45x21 are a standard fit on some MY15 RR, what are the pros and cons of fitting wider tyres than standard 255x55x19 tyres?
My experience is wider tyres are more likely to aquaplane than narrow tyres.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #19114596th Feb 2018 4:08 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 4717

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

275x45x21 are a standard fit on some MY15 RR, what are the pros and cons of fitting wider tyres than standard 255x55x19 tyres?
My experience is wider tyres are more likely to aquaplane than narrow tyres.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #19114616th Feb 2018 4:09 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8669

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

274/45 x 20 rated at 110 ( min 109 on D4) is your best choice from those, not the 275/40 x 20s

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #19115326th Feb 2018 8:52 pm
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