Yes, every 2,000. I get a small pulse when brake is applied. 2,134 miles
ago I bought brand new rotors for my '96 Silverado 2x4. at Napa Auto
Parts. I also bought the most expensive brake pads they had.
I don't drive through any water puddles. What's the deal? Am I going to
have to cut my rotors everytime I get an oil change? The brake drums in
the back work fine, I checked them in the sand to make sure they work.
This isn't the first time this has happened to me either. I've had my
rotors cut 3 times before buying the new ones. And I've only had this
truck for two years.
What am I doing wrong?
Are they putting the wheels back on with an air impact wrench? If so,
that could be warping the rotors... the lug nuts should be torqued to 100lbs
each... no more, no less.
Air impact wrenches vary in pressure and could be over torquing all the
lugs, or worst case torquing unevenly, some too tight, others too loose.
Next time they take the wheels off, tell them to just run the nuts up to the
wheel and hand torque them evenly, to 100lbs from there.
Something else about putting lug nuts on with an impact...I have put almost
NO lug nuts on with anything other than an impact over the past 6yrs...I and
most tire shops use 'Torque Sticks'! They only allow the lug nut to go up to
the rated torque. Before you start a lynch mob because the shop used an
impact, find out if they use torque sticks.
Very interesting segment on "Motor Week" on PBS this weekend. Torque
sticks can be misused if each lug is tightened to full torque before
running the other lug nuts down. It still pulls the rotor out of line.
America's Tire still uses torque wrenchs, one of the factors in my
choosing them. Sometimes the old methods are best.
Had a similar issue with my 97. I replaced the rotors, pads, and calipers
(rebuild calipers were only $15 each). This helped, but the rotors still
warped after about 10-12K. I live in MN so I figured the spring time
driving in the slush may have been the cause. In any case, I finally broke
down and bought a decent set of rotors (made in the USA) and the problem is
BTW - I have looked at the other posts and I agree with the lug nut
tightening discussions. In any case, no one works on my truck but me and I
only use a star tightening pattern and a torque wrench. So the rotor
warping problem was not due to tightening problems in my case.
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