corvettelover

iTrader: (10)

I reaplaced that brake pads and rotors, and the driver side rear looks like this after about 500 miles.

http://img324.imageshack.us/img324/6057/00001901mo.jpg

What could be causing the issue? Can you over tighten the guide pins? What is caliper spread? I've already removed the caliper, reseated the caliper psiton, but it is still happening. Should I try and swap the rear brake pads from driver side to passenger and vise versue? Help!

Flawless02SS

iTrader: (9)

Thats very weird! I've never seen that before. Since the rears are only single piston, I dont see why it would do that. Maybe some will chim in, I at least got you back up to the top ,lol

pimpmaro

Take everything apart, make sure everything's moving cleanly and make sure that the pads are seated properly in the pad abutment bracket.

DONAIMIAN

iTrader: (18)

I agree. If that dosent fix it, it looks like you have spread calipers. (never heard of it on the rear though) measure the caliper on the other side to see how they compare.

mitchntx

iTrader: (14)

Wow! That's a GREAT idea!

corvettelover

iTrader: (10)

THanks for all the advice. I'll try the above posts this weekend. Thanks


By the way, what is caliper spread? I used the search function, but came up with nothing.

mitchntx

iTrader: (14)

Mash the brake pedal and heat is generated. If you generate enough heat, it heats up the caliper enough to "bend" the outer ears. All of a sudden, the inner and outer surfaces the pads ride on are no longer parallel.

DONAIMIAN

iTrader: (18)

Only thing that would make the kind of heat that I can think of is doing a bunout without a line lock.

mitchntx

iTrader: (14)

You need to run about 10 laps on the infield course at Texas Motor Speedway ...

From 110 to 50, twice per lap and a laptime is about 40 seconds.

Brakes get plenty hot ... I've melted the valve stem caps ....

HotRodNeil

I may have an answer to this mystery: I just bought new rotors and it did the same thing until I looked at the old rotor and the new one. The new rotors were wider:

See?

Red Orange 96

iTrader: (2)

corvette lover: Did you ever get this problem solved? I have the same issue going on in my car, but on both rotors, only on the outside. The inside of both rotors is contacting normal. This is on the rear of a 96 ta, new blank rotors & pads, w/<200 miles, and the car sits outside for a few days at a time. Will this work itself out with a few more miles of stopping, or do I have another issue going on? Any ideas would be welcome.

Bens

Do you all need information on stock rotor specs? I have access info on hundreds of cars.

trackbird

iTrader: (4)

If it's not the solution that Hotrodneil posted (that the pads are only "that" wide), then my next guess is that the pads are "flipped".

You did notice the "pin" that sticks out of the top of the pads, right? One is shorter than the other. Each side gets a pad with a short and a long pin. Off the top of my head, I thought the long pin went on the inboard side of the rotor and the short pin fit on the outside (shown in your picture). My guess would be that you either have the pads on that wheel swapped (the pic looks like the caliper is spaced back from the pad a good bit, possibly by having the wrong length "pin" on that side?) or you have two short pins on the drivers side and two long pins on the passengers side.

If you have a long pin on the outside, it can push the caliper "away" from the rotor and it may only be squeezing about 1/2 of the pad and that might explain the wear pattern you see on your rotor.

Or, I could be crazy, but it's worth a look.