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Old 12-04-2017, 03:53 PM   #10
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Join Date: Jun 2014
Location: Melbourne, Australia
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Default Re: 21" Radial ply tyres

Originally Posted by jhowes View Post
Might I ask what an "aspect ratio" is and how does it effect road holding? Jack
The aspect ratio is the ratio between the tread width and the height of the walls. Eg, a 205-60 X (say) 16 tyre has a read width of 205 mm and a wall height of 205x60%= 123mm. 16" is 406mm so the inflated tyre would be 406+(2x 123)+ 652mm diameter. The higher the walls of a tyre, the more flexing you get as you corner and the more it will want to wander in a cross wind etc
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