18" Tyres on a 147 - Speed Ratings? - Alfa Romeo Forum
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18" Tyres on a 147 - Speed Ratings?


Sorry, another question after a couple of days ago.

When my car was being taken in for the ABS/VDC failure to the checked, they reccomended me to buy some new tyres as they were 'getting there'. I'm thinking about replacing the 225/35/18s on my 147 with some 225/40/18s, but the weighting I believe on these new tyres is 88W (and ZR rated) - but Alfa recommend 91W ratings.

Anyone got any idea if these will be alright? Surely if they are ZR rated, it wouldn't make any difference.

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Re: 18" Tyres on a 147 - Speed Ratings?

The '88' or '91' is the load index, nothing to do with the speed rating (V, W etc).

You can get reinforced (marked XL or RF) tyres in that size with a load index of 92 which will be fine.
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147 , ratings , speed , tyres

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