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Old Jun 26th, 2002, 12:55 AM   #11 (permalink)
Skinny G
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Join Date: May 2002
Location: Canada, eh!
Posts: 170
Even tires in the same P-metric size can vary in actual width and offset between manufacturers. You may be surprised to find a 195 in one tire that is wider than a 205 of another!

Sentrapower93 is correct. The sidewall height of a 205/50 is 50% of 205 = 102.5mm. The sidewall height of a 195/50 is 50% of 195 = 97.5mm. That's a 5mm difference in sidewall height, 10mm difference in diameter. That's over 3/8"!

If the aspect ratio value alone determined diameter, then a 175/50R13 Euro T/A (low rider tire) should be the same height as a 215/50R13. Trust me, it ain't In fact, a 215/50R13 V700 is slightly smaller in diameter than a 185/60R13 RA1, but about the same height as a 175/60R13 A032R. Ain't math wonderful?

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