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tire size (archive)
[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]
Posted by mike wong on January 13, 2002 at 23:47:39:

In Reply to: HELP!!!!! TIRE NIGHTMARE!!!!!!!!!!!!!! posted by Scott 85 735i on January 13, 2002 at 13:39:18:

I believe the factory started using 205/70 tires on 14x7 inch wheels. Later changing to the TRX tire/wheel combo. E32's were sold with 225/60 tires on 15x7 inch wheels (these fit e23's perfectly).
I changed to an aftermarket 15x7 inch wheel using the 225/60 tires many years ago. It works great on my e23. I recommend V rated tires.

your problem was using a tire that is "too tall". Not only did it not fit the wheel well, it would also throw off your speedometer and make your car "feel and accelerate slower".

suggest reading info at www.tirerack.com

this is a tire size calculator:
http://www.miata.net/garage/tirecalc.html

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