Tyre size

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rrs
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Location: Kent

Post Thu Apr 29, 2010 2:50 pm

What size tyres shoud I fit to a 15x7.5 wheel.

I've been told 195/55/15 or 195/60/15

Surely they should be at least 205 if not 225?
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mick_318is
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Post Thu Apr 29, 2010 2:52 pm

205 / 55 /15 is the correct size for a 15" Wheel.
E30less again.
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rrs
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Post Thu Apr 29, 2010 2:54 pm

So the extra 0.5" makes no difference?
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Topblag
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Post Thu Apr 29, 2010 3:13 pm

If your car is lowered, the sidewall profile is important to stop rubbing on rear arches. E.g. I understand 15" MIM 1900s need a 50 profile to avoid it rubbing on the rear arch using Sport spec springs.

As Mick_318is says, BMW gave 15" BBS wheels 205x55x15 tyres for a reason.
1990 325i Cab auto in Alpine White II
1988 Alpina C2.5 moredoor in Black, 71k
1990 325ix, moredoor auto in Laser Blue. 51k
1984 Hartge H35 in Black
2004 996 C4S in Silver 43k manual
2006 Audi S6 V10 in Black 58k
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rrs
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Post Thu Apr 29, 2010 3:40 pm

I guess more details would help then, the car is a 325i touring currently unlowered but maybe at some point on mtech suspension and I might be fitting some Ronal ls which are 15x7.5 et25.

So as I understand it at the moment I want 205/50/15 the same tyres as fitted to the standard 15" BBS wheels?
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Topblag
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Location: Fife - You got a problem with that ?

Post Thu Apr 29, 2010 4:16 pm

rrs wrote:I guess more details would help then, the car is a 325i touring currently unlowered but maybe at some point on mtech suspension and I might be fitting some Ronal ls which are 15x7.5 et25.

So as I understand it at the moment I want 205/50/15 the same tyres as fitted to the standard 15" BBS wheels?
Spot on !
1990 325i Cab auto in Alpine White II
1988 Alpina C2.5 moredoor in Black, 71k
1990 325ix, moredoor auto in Laser Blue. 51k
1984 Hartge H35 in Black
2004 996 C4S in Silver 43k manual
2006 Audi S6 V10 in Black 58k
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