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Old Jun 8, 2002 | 11:38 AM
  #1  
JasonGenet's Avatar
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From: Mesa, Az
S500
Rotars

Two months ago I brought my S500 in to check the brakes and I had 50% rear and 65% front. The service advisior told me I need to hard brake more (when you apply the brakes to stop on a dime) to knock of the break dust.

I did this and now the car vibrates when I stop.

I took it in and they say I warped the rotars and need to replace them and the front pads.

They want 500.00 and I want a better reason then this just happens. Any ideas?
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Old Jun 8, 2002 | 12:08 PM
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'17 Jaguar XF
Rotors warp from excessive heat usually caused by hard/late braking. It is common for rotors to warp on cars that do a lot of stop and go freeway driving
or a lot of mountain driving. "Do more hard braking to knock off the brake dust" is one of the dumbest bits of advice I've heard. I'd go for some after market crossed drilled rotors and kevlar pads if you have to replace them. MB pads and rotors do stop well but are known to squeel, wear quickly, and produce volumes of brake dust in comparison.
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Old Jun 8, 2002 | 04:12 PM
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From: 2000 ft over the FL coast in a B-17
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Very hot brakes going through a deep puddle of cold water may warp the rotors as well as a stream of cold water from the garden hose being applied directly to a very hot rotor.
What year is your 500 as the previous generation was more susceptible to the warppage problem

RJC
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Old Jun 8, 2002 | 04:45 PM
  #4  
Robert ...RAB's Avatar
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'00 C280W, Obsidian Black/Charcoal
Lightbulb Re: Rotors

A major cause of warped front rotors is improper (over) torquing when re-installing the wheels. Before you do anything like spend a bundle of money, have the front rims checked for a correct torque spec on all the lug bolts. I used to see this on BMWs, especially when tire shops would use their air-powered wrenches and not hand torgue the bolts. Sometimes the re-torquing would eliminate or greatly reduce the warping. ...RAB

Originally posted by JasonGenet
Two months ago I brought my S500 in to check the brakes and I had 50% rear and 65% front. The service advisior told me I need to hard brake more (when you apply the brakes to stop on a dime) to knock of the break dust.

I did this and now the car vibrates when I stop.

I took it in and they say I warped the rotars and need to replace them and the front pads.

They want 500.00 and I want a better reason then this just happens. Any ideas?
Reply
Old Jun 8, 2002 | 10:05 PM
  #5  
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From: Mesa, Az
S500
Originally posted by RJC
Very hot brakes going through a deep puddle of cold water may warp the rotors as well as a stream of cold water from the garden hose being applied directly to a very hot rotor.
What year is your 500 as the previous generation was more susceptible to the warppage problem

RJC
Its a 2000 s class, the dealer is a crap dealer and I will never buy from them again.
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Old Jun 8, 2002 | 10:43 PM
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From: 2000 ft over the FL coast in a B-17
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Originally posted by JasonGenet


Its a 2000 s class, the dealer is a crap dealer and I will never buy from them again.
RA Brown is also right over tightening can cause a warped rotor too. The new series with the front cross drilled rotors are much better than the old style.
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