Author Topic: Rotors (Read 1126 times)

outtllaw · « **on:** August 20, 2005, 04:32:31 pm »

I’m going to buy a pair of rotors for my 2000 Oldsmobile Alero. The problem is this, I bought a pair of rotors less then 15000km ago and they are warped already. Does anyone knows of any brand that I can buy that will last me longer. I see Canadian- tire with some Monroe rotors, are they any good?

jamie1 · « **Reply #1 on:** August 20, 2005, 06:32:39 pm »

Make sure you clean the mating surface on the hub. Lots of rust and corrosion will cause a rotor to warp. Also make sure to torque the wheels to spec.

Sterling · « **Reply #2 on:** August 20, 2005, 06:47:15 pm »

http://www.stoptech.com/whitepapers/warped_rotors_myth.htm

barrie1 · « **Reply #3 on:** August 20, 2005, 08:27:32 pm »

There will be a few Shop supplies you will need such as Anti-seize to put on the threads of the wheels studs and some anti-rattle grease for the back of the pads. The Torque on your rims should be around 100lbs. per wheel Nut on this model. The Munroe's are fairly decent for your purpose and if broken in as suggested by Sterlings write up they should serve you well. Excellent article on the Brakes there Sterling.

maritime_storm · « **Reply #4 on:** August 22, 2005, 01:43:01 pm »

Here's some advice from an old Saturn tech friend of mine. "Buy the best pads money can buy and the cheapest white box rotors you can lay your hands on". The premium rotors are heavier, thicker and as a result retain more heat, thus causing them to warp faster. Over 90% ot the complaints we see at the shop caused by warped rotors are from the premium ones. Your food for thought for the day.

brakeman · « **Reply #5 on:** August 23, 2005, 01:08:17 pm »

Check out cross drilled rotors to reduce heat.

doug

www.canadianbrake.com

outtllaw · « **Reply #6 on:** August 23, 2005, 08:27:07 pm »

Thanks all

mark · « **Reply #7 on:** August 24, 2005, 01:38:09 pm »

Maritime, I agree with good pads, but I don't agree on the rotor comment. A larger, thicker rotor has more mass to absorb AND dissipate the heat. The same amount of heat will be generated by the friction of the pad against the rotor surface - a larger rotor will just have more mass to dissipate it, resulting in less chance of warping. For this same reason, cross drilled rotors are generally not recommended by brake experts any more (with some exceptions).

I agree that many warping problems are the result of improper torquing of the wheel bolts.