al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10299
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Its not a problem asking daft questions, we all do it 
as long as you stick to the same rolling radius, it doesnt matter about the spare being different.
A 275/45x20 is within 2.5% (which is the rule of thumb used when comparing tyre sizes) of a 255/60x18 or 255/55x19 (the usual D3 tyre sizes), so you can keep your 18" spare and be OK.
A 275/45x20 (if you get one as a spare) will fit in the spare wheel space.
Al Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - 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
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 31st Jan 2010 5:37 pm |
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simoniz
Member Since: 28 Oct 2007
Location: The green green grass of home!!!!!
Posts: 3755
  
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Run 275/45x20 General Grabbers for some months - moved back onto 17's for the rough weather months but only to stop my bling alloys getting knackered - they are the biz for sure and convinced they do give you some pull at the low end when accelerating. First few days of running nearly converted the end of a few saxo's & corsa's such was the increase in acceleration coming out of coming through roundabouts - got used to it quickly tho !!!!
Go for it ... !!!!!
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| 31st Jan 2010 7:36 pm |
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