Originally Posted by semicycler

Check your tire pressure. Popular settings for partially loaded (up to 2 persons w/luggage) is 33 psi front, 39 psi rear. This is also in the user manual. Perhaps your old tires were over inflated. Many dealerships and tire shops use the max load ratings for tire pressure instead (36 front/44 rear). This could explain the "softness".

Also be sure to drive about 200 miles before tracking to wear off any leftover mold release still on the tires. Some of your softness could be this as well.

Originally Posted by Wheeler

Not sure what condition your previous tires were in, but my old PS2's were getting pretty hard. That said, the PSS is as rubbery as an all season passenger tire when they're new. They are a lot smoother and a little quieter. One thing I've noticed (and in my case I lowered, got new tires and wheels with wider offsets, changed a lot of variables at once) up to 100 mph it drives really nice...beyond that seems a little more sketchy now. Like ANY gust of wind moves the car around. Actually caught me by surprise just after mounting the tires, was out in the country, ran it up to about 115 or so and scared the **** out me! Not near as firm and planted as I was used to. I did ask the guys at TPC about it when I ordered my DSC pasm control box. He also mentioned the tires needed to be run in a few hundred miles. Again, I lowered the car and made a bunch of changes. But the other day we were getting out of the car and my son shut his door as I looked back and just that little nudge on the door made the car squirm around a little on the tread blocks...like your regular passenger car/tire would do. If it's doing that sitting still, there is surely some movement at speed! This is my first rodeo with new tires for the record! My car came with PS2's and that's all I've known. What I do know is the car is far less planted feeling now. I'm hoping that changes. If I have some time this weekend I'm going to throw my old tires/wheels back on and take a run and see if I can pin it down to the tires...or if the geometry changed with lowering. Yes, had an alignment and all withing spec now.

Originally Posted by bongoboyla

Can't speak to the spacers, but I recently installed PSSs -- 245 front anid 305 rear. You won't be disappointed... the car came alive on the track, and she looks super mean now.

Keep me posted about the spacers + extra width -- I'm thinking about adding spacers to increase my track width for track driving.