Dedicated AutoX/Track Spring Rates

GSS138

370 oem rear is somewhere around .55, if you switch to true type it is closer to .65, our front oem are around .65/.68. I think this measurement is also affected by your tire width as well because the tire is "extending the lever" a bit. Not 100% sure the correct way to calculate where to measure to, but common sense sort of tells you that if you put a wider tire on it is going to make this number a tad lower, hence needing a stiffer spring.

I still daily my car but have finally settled on 12k/10k full stiff stillen front and I ended up pulling the rear bar completely. I think 12k/ 8 or 9K with a rear OEM bar would probably be nearly equivalent. For autoX nice smooth surface you could definitely go higher, but I think I am at or near the limit of what you would want to DD.

That's a little soft by some standards, but our tracks in socal are not very smooth for the most part, have a lot of elevation changes, and I still need to get over those damn bumps in my office's parking lot.

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Current Mods: Vorpal Weapon +5.