The Official 370Z Autocross Thread

[handyman]

Just finished an all day autox school. It was my 3rd day on an autox course and I'm picking it up quickly. I ended up matching the best time of one of the instructors which he set in his B Stock S2000CR. That made my day (as well as a couple FTD's)

I experienced the damned inside rear tire spin up on a big increasing radius sweeper. Has anyone found any remedies for this that wouldn't bump me out of CS? Being light on the throttle helped of course, but I want to be able to lay down the power! I've heard one guy had good luck using a bigger front anti-roll bar... but I'm not stoked about making the understeer even worse just for traction on corner exits. Maybe after using tires and alignment to counteract the understeer a bar wont be so bad.

I found smooth trail braking and playing with tire pressures really helped getting the car to rotate, I wasn't have any issues with plow by the end of the day.

For anyone who's interested I found 41 psi front and 34 psi rear to be my happy place on the stock tires (of course it will change depending on driving style, course, and traction, but its a place to start) I was still getting a bit of roll over on the fronts (to the base of the triangle) and not quite enough on the rears (about 1/4" from the triangle) but it was handling great with a lot less understeer.

I'll be throwing 285 RE-11's on next week, so all my tuning of tire pressures will be useless to me, but hopefully they will help someone else.