Hi Everyone.
2009 C70 with about 66k miles.
Just bought a set of Autozone or whatever Front Brake Rotors and they're already warped. Car is driven VERY lightly no stop and go really and very little mountain driving. Rotors are pulsing after just maybe a few thousand miles.

OEM rotors seemed overpriced.

People mentioned some cross drilled but I always thought that was overkill for a non-tracked car?

Thoughts?

Will be buying new pads too.

Any suggestions will be a great help!

Thanks
The Count

 

I've had good luck with Brembos and Zimmermanns over the years. Cross drilled/slotted rotors are designed to let the hot gasses between the pad and dick vent to help resist fade but for most daily driving and panic stops don't really add much value. I think the big choice is pad composition - I've gone full cycle (semi-metalic, ceramic etc) and am now back at OEMs for best feel and I just wash off the dust. In terms of avoiding warpage, its important how you bed in the new pads/rotors and how you clean the disk surface during install. Plenty of write ups and Youtubes but I tend to just drive easy for the first 50 miles or so, but there are other suggested techniques.

 

Thanks for the reply. Yeah the last ones were broken like that...very light use first 100 miles.

So you like the OEM pads for the feel even though they make a lot of dust?

Any other opinions out there?? Was hoping to order the pieces today.

Thank you

 

Whatever you do, DO NOT BUY from Performance Brakes in California. They warp in 1,000 miles everytime. Free shipping is bogus because they warp and then to ship them back is more than the cost to turn them. So you pay to have them turned, and they warp in 1,000 miles again. So then you decide to bite the bullet and ship them back at a cost of about $60. Then they send you new ones and they warp in 1,000 miles again. Never again for me thats for sure.

 

consider switching pads. oem pads dust a lot. akebono ceramics dust very little. less dust = less material to melt onto the rotors under hard braking. vibration is not always warped rotors. it's often melted pad material. my local brake/tire shop is honest and tells me i don't need new rotors or pads -- they just scrape and clean off the melted pad material and i'm good to go.

 

I ordered IPD USA rotors and semi-metalic pads with new caliphers 2 yrs later front end braking perfect! Trusted IPD since 1987. Never a problem. Never had to do the same repair twice or under 50k miles. JMHO.