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Old Sep 11, 2006 | 10:43 AM
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Farmer Giles
I've found that life I needed.. It's HERE!!
 
Joined: Jul 2003
Posts: 1,276
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From: Newbury, Berkshire
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You can work it out.

The middle figure, the profile, is a percentage of the first figure, the width.

So the new tyres height from bead to tread is 35% of the 225 width and the old tyre is 40% of the 205 width

new = 78.75mm
old = 82mm

HTH

Martyn
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