Xoutpost.com - Hot rear rotors ?

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Ok I agree but are they back rotors suppossed to be hotter than the front ? They are equally hot on either side.

Quote:

Originally Posted by Thom

Ok I agree but are they back rotors suppossed to be hotter than the front ? They are equally hot on either side.

If they have an inferior cooling system, which they do, than they are going to stay hotter, longer than the fronts, in addition, there is less surface area (so more of the braking force is concentrated on a smaller area = more friction necessary for same stopping power = more heat) the rear tires are larger and heavier than the front = more stopping power to get them to stop rotating as compared to the front = more heat (I'm aware that most stopping power comes from the fronts)...this is why on a couple of the AMG benz's that don't have vented rear brakes, actually have larger rear brakes than fronts.

What car do you have? The N62 4.4i all had vented rear rotors. It was the M62's that had solid rears. Also all the 3.0L X5's had solid rotors.

Quote:

Originally Posted by Thom

Thanks for the ideas. So, before I spend the $...how hot is hot ?
I know the rear rotors are solid metal (vs fronts that are "vented"). But how hot should they be ?
If I drive around in traffic, the fronts are warm but the backs you cant touch. There is no burning smell.