Can a brake rotor warp because of overtightening? 2

[frankiee]

Can a brake rotor warp because of overtightening a road wheel. My guess is - no

 

[jons999]

Most brake pulsation is caused by thickness variation which is a result of adhesive friction material being unevenly deposited on the rotor. For example after hard braking if you keep the car at a complete stop with your foot on the brake a slight amount of pad material will melt onto the rotor causing a high spot. Over torquing or unevenly torquing wheels can cause the rotor to warp especially on cars with aluminum rims. Initially the warping does not cause pulsation but can cause a little bit of a low brake pedal as the pads move side to side in the caliper, but eventually it results in thickness variation and a pulsation. Rotors are not extremely sensitive to warping, tightening the wheels with a torque stick and a properly calibrated impact gun is sufficient.

Here is a link to a good article on thickness variation by carroll smith:

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml#

-Jon

 

[patprimmer]

Thanks Jon

That backs up my observations with a very plausible and creditable explanation.

Regards

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