Thursday, 6 September 2007

Wheel Sizes and Tyres that fit them

(left click on images to enlarge them)

I am hoping to visit Magpie next week to see his collection and collect a fuel tank I bought from him on ebay and a couple of wheels which he is all but donating to the project. Measuring the wheels that I have revealed a misunderstanding on my part about how tyres are sized...and when you think about it it is painfully, embarrassingly obvious, but in case anyone else is unsure, here's how Magpie explained it:

".....a common error. A 16" tyre won't be
fitted to a 16" rim; it would fall off. The wheel rim
is bigger as the tyre edge sits inside the rim of the
wheel. Tyres are measured by the diameter of their
hole, so a J Type RIM measured diagonally will be
larger than the tyre size that fits it."


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