rx7 springs
 

Hello,

I was recently autocrossing my '86.5 rx7 and had some real trouble with front tire rubbing on the inner fender and to a lesser extent, on the metal fender lip. My fender liners are almost worn through!!

I want to track this car, so I need to fix this problem. I have koni yellows with Tanabe GF210 springs. I have a front sway bar with rod end links, but I don't know how stiff the sway bar is. I have OZ 17" superleggeras with (I think) 225x50s Pirelli PZero Neros (not a great tire).

I looked up the tanabe spring rates online, and it seems that they are already one of the stiffest options out there, stiffer than the tein, racingbeat and suspension techniques options. Eibach seems to be the only stiffer option (without going to coilovers), but it seems like this problem shouldn't be happening with my current setup. What is going wrong?