My dads 03 GTP he has gone threw 3 pairs of front rotors because they keep warping. they are drilled and slotted can anyone help me idk what to do
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02-21-2010
My dads 03 GTP he has gone threw 3 pairs of front rotors because they keep warping. they are drilled and slotted can anyone help me idk what to do
02-21-2010
Buy better rotors. The cheap drilled and slotted rotors warp easily.
02-21-2010
drilled and slotted are basically useless. google it just buy a good set off rockauto
02-21-2010
Drilled and Slotted rotors are amazing compared to stockers. The ones he is using must be cheap-o's. If you want good D/S rotors...then buy them from R1 Concepts off of EBay.
02-21-2010
could be the calipers are sticking and not realeasing causing rotors to warp, or he is not breaking them in the right way no sudden stops or riding of brakes for the first 50miles
02-21-2010
You need to get on the brakes hard when they are first installed to burn off what is left of packing grease that brake clean did not get off.Originally Posted by imdaman3
could be the calipers are sticking and not realeasing causing rotors to warp, or he is not breaking them in the right way no sudden stops or riding of brakes for the first 50miles
02-21-2010
ok the first pair was cheap so my dad when out and got some good ones and the have a warranty so wear going to get them not drilled
03-02-2010
you need new bearings for your wheels. almost 90% positive. I had the same problem on mine. I would replace them, they would warp, have to get new ones. Finally i checked and when jacked up there was a very small movement in the wheel that i could wiggle (we're talking small like only a few millimeters). Keep in mind though any movement will cause warping and there should be NONE. I replaced the bearings in the hub and never warped since. All the GM vehicles from that time had ****ty wheel bearings on them and they go bad. The worst was the Caviliers. My ex had to get all 4 bearings replaced. I've had to replace 2 but one was because the ABS wires snapped inside and i couldn't get to them to solder them.
Last edited by shiguy; 03-02-2010 at 01:17 PM.
03-02-2010
I had the same issue with mine until I bought and installed these.
Brembo Replacement Rotor
03-09-2010
The pulsation is back, I found play in my right bearing so I'm replacing them both.
03-10-2010
Bingo! what did i tell ya. Like i said i was going through rotors every few months. Replaced my bearings 5 years ago and have never warped a rotor since.
03-17-2010
not that i like to agree with NickDrilled and Slotted rotors are amazing compared to stockers. The ones he is using must be cheap-o's. If you want good D/S rotors...then buy them from R1 Concepts off of EBay....
but x2. I have had these on 2 cars with no problems. stopping is excellent. Drilled rotors actually prevent warping
03-17-2010
Drilling doesnt improve cooling.not that i like to agree with Nick
but x2. I have had these on 2 cars with no problems. stopping is excellent. Drilled rotors actually prevent warping
Vent your dust plates. You could probably autocross with 11" front rotors if you did that with some quality solid rotors and high temp pads.
03-17-2010
actually it does. drilled rotors are cooler than blanks. the holes reduce surface area, which lowers friction, which lowers heat. the holes dissapate the heat too.
the main purpose, is to release the gas that builds up during braking between the rotor and pad, which can deteriorate the rotor. It can also release debri that builds up between the rotor and pad
03-17-2010
Upon some more research, they do increase cooling but can crack. Why bother with expensive rotors that crack when stressed?
Theres a cheaper way to get MUCH more effective cooling... and thats called brake ducts to cool the rotors.
Gases should only be building up when bedding pads.
There shouldn't be any debris between the pad and rotor. The pads would either push it off or burn it off.
Also if you think your rotors are warped try rebedding your pads before getting new rotors. Unless they are indeed very cheap rotors. Then you may very well have warped them.
03-17-2010
cracking is due to excessive stress, such as performance racing. I have never had mine crack. You would have to be pretty hard on ur brakes to get cracks in the rotors
03-17-2010
Just curious, what pads and rotors do you run and how long do they last?
03-17-2010
R1 concepts drilled/slotted rotors, posi-quiet ceramic pads.
put them on in March 2008 and no rotors to replace, and pads still good. I can tell they are getting lower though cuz the brake pedal has to go a little further down to brake ; )
03-17-2010
My drilled and slotted rotors are warped too. First time they warped they were under warranty and I bought semi metallic instead of full metallic pads as well and within 6 months the second pair were warped just as bad as the first. I don't know what to do eitherI think maybe it was my hubs, I did replace them because they were shot so when I replace the rotors again hopefully they won’t warp this time
03-17-2010
i rock factory GM replacements! ohh yeaah
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