In Reply to: Rear Koni shocks bottoming out posted by Neil on August 04, 2001 at 10:22:45:
I have never had that problem on my M Roadster or Coupe. But I have the double adjustables, and run full soft on the street and full hard (maybe a little less compression depending on the surface/weather) to autocross.
But I have a friend with a Z3 Coupe who has single adjustables in the rear. He got sick of full stiff all the time, and set his to half stiff as you have. I drove his car once, and it felt kind of funny in turns.
Another friend, one of the best drivers in the country, drove his car next. He told me that he had to lean the car, bottom out the shocks, THEN do the turn. In other words, the handling wasn't very good for "close to the edge" driving.
Running full stiff will help much. But few of us could stand this in a daily driver.
On 3-4 occassions when cornering hard at the last couple of autoxes, I've heard/felt a loud bang at the rear end of my car. I've now figured out that it is my Koni SA Yellow shocks, w/rebound at 1/2firm, bottoming out. Stiffer srings would prevent that from happening, but that would move me out of the stock class. BTW, the shocks were installed about 6,000 miles ago, have seen only 4-5 autoxes and are in great shape. Any advice/suggestions?