Rotors Too??? - Page 3 - Toyota RAV4 Forums
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#21 (permalink) Old 12-26-2012, 02:13 PM
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Quote:
Originally Posted by Meander View Post
" Over tightening is a cause of rotor "warping".
How so If I may ask ?[/QUOTE]

Did you know there’s a right and a wrong way to tighten lug nuts? Most people think “tighter is better.” Not true. Overtightening lug nuts is the No. 1 cause of brake rotor lateral runout (warp). Warped rotors cause pedal pulsation and can increase your stopping distance. Overtightening is also a great way to break wheel studs. The stud itself doesn’t cost much, but the labor to press out the old stud and insert the new one can be significant.

Spin the lug nuts on by hand. Never coat the stud with grease, oil or antiseize. Lower the jack only enough to bring the tire into contact with the road. Tighten each nut to one-half of the specified torque. Then lower the vehicle completely and tighten each nut to full torque.

link How to Torque Lug Nuts Properly | The Family Handyman

Also:
Rotor distortion and runout also can be caused by overtightening or uneven tightening of the lug nuts. If somebody zips on the lug nuts with an impact wrench, the uneven loading of the lug nuts can twist and distort the hat section of the rotor, causing the disc part of the rotor to wobble as it rotates. Using a torque wrench to final tighten the lug nuts prevents this kind of distortion.

link http://www.tirereview.com/Article/95...o_replace.aspx

Last edited by ronbo1313; 12-26-2012 at 04:40 PM.
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#22 (permalink) Old 12-26-2012, 04:47 PM
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Quote:
Originally Posted by tankd0g View Post
Same metal with holes drilled in it and a higher price tag.
Yes ,cheaper rotors can work OK, BUT Premium rotors also have better metallurgy, and are manufactured with tighter quality controls.
 Good metallurgy is critical because it affects the friction qualities of the rotor as well as its strength, hardness, sound characteristics and even its corrosion resistance.
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