tyre size/wheel size

6.5" rims will take a 185-205 tyre.

7" rims will take 195-215.

8" take 225 as standard on the Escort Cossie.

These are all aproximate - you can prolly go 10mm more each way, without any problems.

Woohoo that'll do :)

-- Chet

Nominal rim width should be about 80% of tyre section for modern lower aspect 70/60/50% tyres (70% on old cars, trucks, vans, 4x4, suv's etc with 82% tyre profile), 145 - 4.5, 155/165 - 5, 175 - 5.5, 185/195 -

6, 205 - 6.5, 215/225 - 7, 235 - 7.5, 245 - 8. Fitting a wider rim will make the tyre wider (puts more rubber on road) by about 0.2" per 0.5" increase in rim width. With most normal tyre rims combos the rim is 0.5" to 1.5" smaller than tyre. Some people go to the extreme of using rims that are about the same width as the tyre to get maximum amount of rubber on road but this exposes the rim to greater possiblity of damage, what would be a light trye sidewall scuff on a kerb becomes rim damage. A wide tyre on a narrow rim will lose some width. Very low profile tyres need wider rims, 45% the ratio is 85% and for 40% it is over 90%.

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