Miata Mailing List: July 1997, Message #20
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From: 	Gary Pollak <gpollak@primenet.com>

Subject: Re:15" vs. 16" wheels?

Date: 	Tue, 1 Jul 1997 21:18:25 -0500



Thanks for the correction, guess I'd go for the 205/40/16 if I go the 16"

route.





>I'm not going to make a recommendation, because I dont have any personal   

>experience, but I just thought I'd point out those tyre sizes are not   

>equal. There are also some other options that are closer to standard,   

>although those ones aren't too far out, and it may depend on what's   

>available...

>

>Standard rolling diameter (of a 186/60-14 is 578 mm)

>

>205/50-15 is (586mm), 1.5% oversize, this is not too bad

>

>205/45-16 is (591mm), 2.3% oversize, this will start to have a noticeable   

>effect on accelleration.

>

>195/50-15 is a nearly exact fit (576mm)

>

>215/40-16 is (578mm) ,an exact fit, but may be too wide for the wheel   

>well, I'm not sure, is there anyone running 215's on this list?

>

>195/45-16 is (582mm), only 0.7% oversize.

>205/40-16 is (570mm), 1.25% undersize