Pushed my tires to far where cupping inside front at 15,000 went to 25,000, back ones slick. Anyway just got new Falken 452`s from vulcantire.com I thought was good price. $639.00 delivered thats for 2- 225/35/19`s and 2- 245/35/19`s. put them on last wed. scheduled appointment for today for alignment when I got there he asked was it pulling to right or left or what, I said well front tires are cupped on inside, he said well there going to do that because of not being able to rotate them, he said they all do that. I sure hope they remove that defect before the g-37 comes out. anyway the last question i had does anyone know how much differance the 35`s make on the speedometer reading instead of the 40`s.

 

heres the calculator for the speedometer thing.. just plug in the size that you have, and the size u had on previously. http://www.miata.net/garage/tirecalc.html

if you maintain the same ratio's as stock thenthe difference should be marginal