|
This site has a nice tire size calculator that can tell you the speedo
error.
http://www.miata.net/garage/tirecalc.html
The speedo error won't be much. A dealer can set it to the tire size, if you wish. But, I doubt speedos are more then 5% accurate anyway so you should be
OK.
Tire width is really the bigger issue since you can get some rubbing.
A 205/55 16 inch fits fine in a V70 so you could use that to determine if
your target size will fit.
The profile is simply the ratio of sidewall height to width.
|