Well for the most part I am new to autocrossing, I have only done a handfull of the events.

I am trying to find out what Tire pressure I should be running at an event. More? or Less? than the Daily driving pressure.

I drove an auto-x a few weeks back in a new car and experienced alot of the rear end stepping out on me and had to correct alot, while doing this event with the new car I left my tire pressure a daily driving pressure about " 32 psi" because I wanted to learn the car before making any changes, due to the fact I came from an ITR to a rear wheel drive car. I was unsure if that could be minimized a bit through tire pressure set up, and of course better driving once I learn the rear wheel drive thing. Thanks in advance

 

Hi Mike,

I take it this is an S2000 we're talking about?

I don't have personal experience with S2000, but here are some general tips that might help:

For tire pressure, it's going to depend on the tires, but you're usually going to want to run higher than street pressures. A good place to start with street tires is 35 psi. You want to run enough to prevent the tires from rolling over onto the sidewall. You can put a short line of chalk on the tire, starting on the tread and continuing down onto the sidewall a couple inches. After a run, check the chalk line to see how much has rubbed off. If it's rubbed off down onto the sidewall, you need to add air. Do this on all four tires.

As far as the rear end stepping out, this is probably best corrected by driver technique. You need to be smoother in a RWD than you were in the R. Try slowing down a little more before the corner, be very smooth with the turn in, and gently get back on the gas as you turn in. You don't need a whole lot, just enough to keep it balanced. Then gently squeeze on more gas as you unwind the wheel on the way out of the corner. Don't get too greedy or the back end will step out and you'll need to get off the gas.

 

I typically run 2 psi lower in the rear tires in my S2000.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jack Black &raquo;</TD></TR><TR><TD CLASS="quote">Hi Mike,

I take it this is an S2000 we're talking about?

I don't have personal experience with S2000, but here are some general tips that might help:

For tire pressure, it's going to depend on the tires, but you're usually going to want to run higher than street pressures. A good place to start with street tires is 35 psi. You want to run enough to prevent the tires from rolling over onto the sidewall. You can put a short line of chalk on the tire, starting on the tread and continuing down onto the sidewall a couple inches. After a run, check the chalk line to see how much has rubbed off. If it's rubbed off down onto the sidewall, you need to add air. Do this on all four tires.

As far as the rear end stepping out, this is probably best corrected by driver technique. You need to be smoother in a RWD than you were in the R. Try slowing down a little more before the corner, be very smooth with the turn in, and gently get back on the gas as you turn in. You don't need a whole lot, just enough to keep it balanced. Then gently squeeze on more gas as you unwind the wheel on the way out of the corner. Don't get too greedy or the back end will step out and you'll need to get off the gas.
</TD></TR></TABLE>

ok great, that sounds like a good start for me... I know exactly what your talking about as far as getting greedy.. ... the back end does like to step out... and I will def work on the my skills.. coming from the R you can almost do anything you want with that car and it just pulls through the corner... as with this seeems like it take a little more finess.