Yaris VS MX5 showdown

[ivanstepul]

Originally Posted by Jason@SportsCar

Those are SCCA Solo classes - this match up you seek is played out every weekend around the cournty... A Yaris modded like your list, less the interior removal, would be in STF. Stockish Miatas are in CS and ES, both of which are quicker. The Miata has more power (even after your mods), less weight, RWD, and way better suspension. End game.

You accomplished nothing by going to a 17" other than aesthetics. Same width 15" wheel/combo will beat the 17" every time, the 15" carries less weight and offers a gearing advantage.

I am guaranteed to be faster if I run the 185/15/65 vs the 205/17/45 right?