wbwii

They are aftermarket rotors, I forget the manufacturer. I went cheap considering how many miles are on the car.

Thanks for the quick replies. I will start with the front rotors and have them turned. Each time I replace rotors I wipe the oil off so there are no slick spots. I will keep everyone informed what happens. I hope rotors that are only a year old are not warped, but this would be the easiest fix.

Okay, here is my story. I have a 92 ES300 with over 160K miles, that has developed a vibration when braking. In a nutshell I have replaced: All 4 shocks (passenger rear was shot, we will get back to the passenger rear problem area) Replaced all rotors & pads about a year ago Replaced all calipers two weeks ago, no visual problems with rotors or pads. New brake fluid. Had the car a lined, the dealership noticed that the passenger rear tire was "chunky". After investigation it looked like someone had sandpapered the tread about ever other 5 inches. Very bizarre and I still do not know why. Replaced two tires, old tires only about two years old. Checked the codes to see if the ABS system is working properly via abs light on dash, everything checked out okay. Could the LSPV be the problem? It seems as though the vibrations start in the back but difficult to tell as the whole car shakes initially and if I apply more pressure the vibration lessens. I need your help, I don't want to take it to the dealership which is 45 minutes away. I don't know if any mechanic in my small town of 6000 people has ever seen this before. Thanks for your help! Bill

Well, I replaced the vehicle speed sensor and so far so good. The speedometer needle and odometer work. We will see what happens over the next couple weeks.

Interesting that this old thread pops up today. I just ordered a "vehicle speed sensor" today from Napa online for $100. I have the same symptoms that Nigel had. I checked the Lexus service manuals and counted the number of blinks that the OD (overdrive) light gives as a code. My code is 42 stating that the primary speed sensor is bad. I will keep everyone posted of if this works or not. One additional observation is that when the speedometer indicates "0 mph" the odometer is not working. So, I don't know exactly how many miles are on my ES300, which shows 150,000 miles. Bill