Quote:
Originally Posted by techweenie
I don't think the 8s are more rare. I think there are about twice as many out there as there are 9s.
But the selection of tires to fit the 9s is ridiculously small (1 ultra performance? 1 DOT legal track? 1 Grand Touring?) While the list of tires @ 225/50-16 is quite long.
I think the limited tire selection is making 8s more popular.
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That was my impression as well. I went with 245/50R16s on my 9s, and the overall diameter seems about right. The speedo agrees within 2% all across the ranges of speeds that I tested, but different tire makers have different ideas about where they start measuring the tread to calulate width and aspect.