VNAMVET

After 4 20 min sessions at PBIR, my tires looked kinda' shredded.

I can live with that until I actually need them.

More on point of this post:

However, several months have passed and now the car shudders from 55 - 60 mph on moderate to heavy deceleration. The hood actually bounces up and down to a slight degree.

I am not going to go to GM and seek warranty assistance, as I feel since I have tracked the car, I am responsible. Rotors look ok, no burn spots or such. So I am guessing it's the pads. I am not sure if fronts or rears need replacement, so I will replace both.

Search function has yielded everything but stock pad numbers. GM Parts warehouse only has up to 2013 for Corvette Parts.

So.......where can I find a decent price for the stock GM pads. I'll replace them myself also.

Thanks guys.

z51vett

Look at pads that is remove them they may need you to break the glaze of the pad just a thought. Look for material transfer to rotor also.
z51vett
Doug

-CM-

Fichtner Chevy is a great place to get things at discount prices.

Do you have Z51?

EasyElliott

Sure sounds like warped rotors. There is no way to tell unless they check them out. Bad pads would not cause a vibration.

I do not think a hard day of racing would hurt the pads.

If your car is not a Z51 then it must be the rotors as my C6 non Z51 warped after just a dozen or so hard stops. had them cut down a little and the original pads were fine.

My car shuttered so bad I could make a milk shake in the car!

Daekwan06

I'd agree. Warped rotors.

If you are going to be tracking the car.. its worth it to upgrade the rotors/pads anyways.

GazUK

My dealer just replaced all 4 of my Z51 warped rotors at 5200 non-tracked miles. Now it stops w/out vibration. They did NOT change the pads.

VNAMVET

Thanks for all the help guys. It is a Z-51. I do not think that all four rotors could be warped and it's probably just the fronts. Perhaps I'll take it into the dealer and see what they can determine.

Thanks again.

Woodson

Did you use the cooling rings?

*C7*

Read this link.

http://www.stoptech.com/technical-su...nd-other-myths

gbjerke

I suspect rotors also but if you want a set of OEM pads, I have them. 1,800 miles on them, 1,350 of which were driving back from delivering dealer, (interstate stuff). Am going to go with ceramics to avoid the dusting bit of the stock pads. Mine is a Z51 but think they are the same as non Z51's? Email me if interested; gbjerke@aol.com
Will sell on the cheap!

Cruiter

Normal wear and tear such as brake pads wouldn't be covered anyway. But don't be afraid to track it, as long as you don't mod anything (that GM can say caused the failure) as the warranty doesn't necessarily stop when you go on the track. GM will still warranty a stock power train.

silversmoke1957

I strongly suspect one or more warped rotors. Take it to a reliable mechanic and get the runout checked on the rotors. If the rotors are warped you can have them turned which will cure the shuddering and shaking while braking for a while. However, my experience is the problem will return sooner or later if you do this. A better, although more expensive solution, is to replace the warped rotors.

Jontall

Rotors are ~$103 each for AC Delco so I'd try to find the warped ones and cut them if possible.

VNAMVET

Great read. Saved it to my bookmarks.

Thank you.

jokerdev

I changed my OEM pads out for Carbotech. I have my stock pads I can let go for cheap if you're interested. Took them off after 1000 miles. I'm in Orlando, PM me if interested.

jimmyb

Be sure to burnish the pads (per the owners manual) or you are going to have the same situation again.

BTW, what you guys are experiencing are NOT warped rotors, it is pad material build up on the rotors. Read the Stop Tech article in the link in this thread. I am really surprised that GM warranties this as it is clearly outlined in the manual.

Jimmy

VNAMVET

Just had my cars rotors resurfaced. GM service told me that
rotors were "out of round".

After resurfacing them, left rotor thickness now measures
29.6 mm, right rotor measures 29.4 mm. No vibration now.

bob guzzy

You might be able to reuse the pads if you sand them, but sand them with the sandpaper lying on a hard surface rubbing the pad on the paper until it is flat.

That will bust the glaze.

VNAMVET

Pads are fine.