I wash cleaning my rims today and noticed my front rotors had grooves in them. I have 4000km (about 2500miles). I have never seen this on a car this new before. I am not on the brakes any harder than any other car I have driven. Anyone else seeing this ? I want to go to the dealership on Monday and would appreciate any feedback from the rest of you on your rotor wear.

Thanks in advance

Steve.

 

I only have 600 Km's on mine so far, so I cant say much. But everything about my car so far is great!

 

yeah I got the grooves too, I am going to say something my next oil change. They also pulse a bit.... I am actually pretty gentle on my brakes, especailly with a manual I do mostly engine braking when I can.

 

when mine was brand new that started and it was due to the wheels not being torqued down
the LF wheel was only @ 40 ft. lbs
torque them all to 100

 

The Red Lines dealt with this too. The dealer will say it does not affect performance and is common on this design. I'm assuming that goes for the SS also.

 

my left front is groving more than the right, i thought maybe it was a bad set of pads, i got 2k miles on my ss and never have seen this before.

 

i work at midas muffler and brake and this is the first time , i have seen this i will not pull the wheels off bcause warranty every thing is covered i have had door panel replaced ac controls and the gray trim on the driver door replaced my brother works in service at the dearler and he said leave it alone get it covered on warranty

 

i HAD THE SAME PROBLEM 600 MILES ON THE ODO. i TOOK IT TO CHEVY AND THEY TURNED THE ROTORS AND REPLACED THE PADS UNDE WARRANTY,NO QUESTIONS ASKED!

 

I have over 9000km on the car and i have the exact same pproblem, irregular wear on the discs and when i break i get a pulse as well

 

this has been established as a regular issue associated with having ceramic brake pads. this is why we stop so nicely.

if you can get your dealer to resurface them, go for it, but it'll come back. it has to mine. they'll tell you nothing is wrong with them, but they did it anyways.

 

There is nothing wrong with grooves in the rotors as long as they are less than .060"(1.5mm) deep. Brake puslation is caused by thickness variation and lateral runout, not grooves.

Zinner...since brakes are way cheaper than clutches....uses your brakes bro'.


There are about a dozen or more pages of information regarding warranty brake service procedures on Chevy cars/trucks. Unless your experiencing a soft/low pedal, a hard/ ineffective pedal, red brake indicators on the dash or pulsation there really isnt any reason to contact your dealer, you should also know that unless you have one of the concerns Ive listed (or deep grooves) It is likely they many dealers will do nothing other than look at you funny or just let the car sit in the techs bay for a half hour or so while he works on something else.

 

I don't have all that much experience with performance breaks, but I have 30000km on my car (18600miles) AND I HAVE T OGET MY BREAK PAD RELACED ALREADY, rotors machined and calipers serviced, dealer wants $500cnd
wtf

I in now way ride these breaks hard, there should be no need for something of this severity so soon.

 

yeah mine had grooves on them at 1500 miles got them fixed now i think they are coming back again

 

WHY IS YOUR POST IN ALL CAPS?

 

That is the way GM's better braking systems are these days. My 00 Aurora V8 and 03 Envoy did the same thing. Ceramic pads are hard on steel disks.

 

my sister LS cobalt was like that bring it inot the dealer they will either replace them or mechine them for you...

 

the dealer wants $500cnd to service the calipers, machine the rotors, and replace the OEM pads.

they say I'm breaking too hard. ( F&%$in basterds) thats BS.

 

get the work done under ur warranty

 

they won't cover it under warrenty

 

that sux, y not

 

they claim that I'm breaking to hard, and these performance breaks don't last as long as the normal breaks.

all B.S. the just don't want to cover it

 

performance brakes are supposed to be stronger and more durable then regular brakes

 

THATS BS go comnpalin thats what they said to my sister who at the time at 15,000 km on her car and when you start to stop the car would vibrate.... put up a fight and they will chnage them under warenty...

even on my dads 05 equiniox he has the same problem the roaters are crap... gm must of cut back on them or something.

 

mine had deep grooves which the dealer resurfaced without any further questions asked however they are starting to come back again and they said that if that happened they would put new rotors on so my next oil change i will be getting new rotors

 

Power slot does have a great set of rotors out. Also EBC just about has ready the pads for the Cobalt

Great price on a set of 4 rotors for the SS models @ www.TurboTechRacing.com