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What size tyre should I fit to my Ford S-Max's 16-inch spare wheel, to ensure the same diameter as its other 17-inch wheels?
I have a Ford S-Max with 235/45 tyres on 18-inch rims. The S-Max does not come with a spare wheel, but I have been offered a compatible 16-inch steel rim for free. Can you by chance tell me where to find the correct tyre size to fit to keep the rolling diameter the same?
Asked on 1 September 2010 by gonespare
Answered by
Honest John
I checked at: www.etyres.co.uk/tyre-size-calculator.htm, which gives an equivalence of 195/65 R15 and a diameter of 25.98 v/s 26.33 for the 235/45s, which is close enough.
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