Gary Z

At Sacramento Raceway recently, I completed a smooth, typical (for me) run and turned off onto the return strip. I hadn’t gone far when horrible WTF grinding noises started coming from underneath the rear of my car. I immediately stopped, thinking something semi-bad must have happened. I looked everywhere I could but found nothing. I decided to see if I could make it back to the pits and was surprised to find the noise had disappeared and all seemed well. Today I pulled the rear wheels and found a fairly deep ridge scored around the inside of my driver’s side Convo-Pro. There is a corresponding gouge in the brake caliper. Apparently a pebble got wedged between them. I am wondering if this is common.

Maggie

Did you check the caliper bolts? if one of them is loose or bad it will cause the caliper to kick up into the wheel. I had a caliper get into a bogart a few years ago. I had to put a sleve in the bolt hole in the caliper to get rid of side play. Clamping force of the bolt alone wouldn't hold it under hard breaking. Could have been a pebble though. I have seen garbage get gouged inbetween the caliper and the wheel.

Gary Z

I did not check the caliper bolts - I will. Thanks.

My first thought, when I saw the damage, was - I would have been really pissed, if I'd had Bogarts.