I recently installed a new pair of MT ET Streets on my Malibu. These are 275/60/15. I started out smoking the tires 300 feet or better, and had 2.50 plus 60-foot times and 15 sec. ET's due to excessive air pressure. I now have the pressure down to 16 lbs, and my 60-foots have been brought down into the 1.90 range, and ET's have improved to a best 12.91. I still think I can do better. My question is: How low can I take the pressure down. Some guys have told me these tires suck when they are new, and they are best just before they wear out. The car is going down the track with no handling problems so far. I just don't want to push my luck without some advice. In case it helps, I am running the bone-stock 7.5 rear. I have stock springs, but I run air springs (currently set at 12 psi on the left, and 7.5 psi on the right). I also run Comp. Eng. adjustable shocks, currently set at 50/50.
Thanks for the help, Jay
Thanks for the help, Jay