Will all of the following tyre sizes have the same diameter and hence running circumference :-
205/16/55
235/45/17
235/40/18
All of these tyre sizes are used on my model of car and I was wondiring what the effect was on speedo/mileometer readings.
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Use this:
www.miata.net/garage/tirecalc.html
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I suspect the 40 profile will give such a harse ride that you won't read the speedo and the read view mirror rotates if you touch cats eye. What car is it for. Regards Peter
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