08-02-2009, 08:37 PM
Join Date: Dec 2007
Location: San Antonio, Texas
Total Cats: 25
Suspension setup question
So today I tried out the new (to me) 15x8 6ULs with the brand new NT01s in 225/45/15. Very sticky, love them.
But, I have a small suspension setup issue. The car was aligned with 205/50/15 tires on stock 15x6 wheels. With these tires/wheels, there are no issues on the track or street, pretty balanced with a slight bit of throttle-on-exit oversteer. Car tracks straight. I would have to go find the alignment sheet since I forget all of the numbers. But, off the top of my head:
front camber - about 2.0-2.5 (all I could get)
rear camber - about 1.5-2 (all I could get)
front caster - about 4
I forget the front and rear toe in, but it is not much.
Under heavy braking the car is very twitchy with the new wheel/tire combo. It wanders back and forth slowly, maybe at about 1-2 Hz, and is sensitive to road imperfections, especially under braking. Once or twice it was quite instable, and I had to fight the wheel to keep it pointed in the right direction while braking over an uneven surface. I think what I need is a bit more front toe in. I am thinking I could just turn the tie rods equally to bring it in a bit.
Thoughts? Hoping the 6UL big tire crowd has seen this problem and has an answer.
Last edited by ZX-Tex; 08-02-2009 at 10:15 PM.