I have my car stripped down to about 2,400 lbs. and the stock suspension is on its way out in favor of upgrades. This is my first stripped-out track dedicated car, so I have no idea what to shoot for as far as spring rates are concerned. The car will see some minimal street driving to and from the track, but my primary concern is track performance.

Any suggestions on what spring rates to run and what to expect?

Thanks for your input!!

 

Tires?

 

255/40/17 on all four corners, possibly jumping up to 275's in the rear if I can.

 

I depends on how low your going, and if your correcting the roll centers or not. If I had to guess I'd say 700-800 range.

 

He meant "tire compound?"

More grip, more weight transfer.

 

I was going to start at 1" lower than stock and then go from their. And yes, I will be correcting roll centers.

I understand about the tire compounds, and to be honest I dont know. Not an r compound though at least at first since I dont have experience using them and would not know how to maximize their potential.

 

I would suggest you start at around 600 front and 500 rear, but no more than 700 front and 600 rear.

 

Listen to rob. He's the man!

 

Awesome guys thanks, I really do appreciate the feedback. I really didnt even know where to start.

 

You also need to be aware of what tracks you will be running. Higher spring rates for a very smooth track, lower rates for something very rough.