Which tyre size is the smallest diameter

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Mon 26 Dec 2005 23:23
Which tyre size is the smallest diameter - Ian D
My 1991 Passat speedo overreads by about 10-12% (should be 10% or less) and all four tryes need changing.

Now the ones that are recommended in thew owners manual are either 185/65R14 or 195/60R14. I was hoping someone could tell me the diameter of each of these sizes and if one is smaller by a reasonable margin I may be able to improve my speedo accuracy....


thanks



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Mon 26 Dec 2005 23:39
Which tyre size is the smallest diameter - Ian D
Just answered my own question when I stumbled across www.tyresave.co.uk/tyresize.html . Only 1% difference in diameter (and hence circumference) so not enough to justify specifically choosing one over the other.
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Tue 27 Dec 2005 06:42
Which tyre size is the smallest diameter - AndyT
Another one to play with...

www.miata.net/garage/tirecalc.html
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Mon 26 Dec 2005 23:46
Which tyre size is the smallest diameter - Civic8
185mm/65% of tread width by 14inch...14" size is the same size diameter. tread width is 10mm wider on 195....60 is slightly smaller%centage of tread width..speedo should be calibrated to tolerate this difference
--
Steve
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Tue 27 Dec 2005 09:31
Which tyre size is the smallest diameter - bikemade3
I am looking at replacing all 4 tyres on my car, presently 185/65/14 would 195/60/14 go on these rims? as they might be cheaper.
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Tue 27 Dec 2005 18:45
Which tyre size is the smallest diameter - Ian D
A lot of tyres would go on those rims but I would stick to those recommended in your owners manual, otherwise you may have problems if you had an accident and an overzealous insurance assessor was on the case.
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Tue 27 Dec 2005 21:48
Which tyre size is the smallest diameter - bikemade3
Thanks,
Looked at My Tyres and the 195/60 option was not cost effective.
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