Had to replace my Rotors, have you?
04-12-2007, 04:37 AM
#1
Had to replace my Rotors, have you?
So the story goes like this...
One day a rock hits my windshield and cracks it all the way from left to right. So I take it to the dealer to have it replaced, insurance covered. While it's there I have them do a 50k checkup, including brake and transmission inspection. They come back to tell me the rotors are beyond turning and need to be replaced, and the clutch is heading south as well. So I figure this is the perfect opertunity to get the slotted rotors I want and a lightwieght flywhell/clutch combo, no big deal.
But I was curious... 50k miles and the rotors have to be replaced? After I replaced the Rotors and pads I took the disks to my "joe local garage" to have the mic'ed. Sure enough they were still in spec to use, but turning them would have put them beyond safe limits. WTH?!? Nissan using some cheap metal on there rotors? I expected the pads to be done, but not the rotors! I know I drive hard, but I've never tracked the car and I really did'nt think I drove all THAT hard!
Has anyone else with 50k miles seen there rotors needing to be replaced? Is this normal?
One day a rock hits my windshield and cracks it all the way from left to right. So I take it to the dealer to have it replaced, insurance covered. While it's there I have them do a 50k checkup, including brake and transmission inspection. They come back to tell me the rotors are beyond turning and need to be replaced, and the clutch is heading south as well. So I figure this is the perfect opertunity to get the slotted rotors I want and a lightwieght flywhell/clutch combo, no big deal.
But I was curious... 50k miles and the rotors have to be replaced? After I replaced the Rotors and pads I took the disks to my "joe local garage" to have the mic'ed. Sure enough they were still in spec to use, but turning them would have put them beyond safe limits. WTH?!? Nissan using some cheap metal on there rotors? I expected the pads to be done, but not the rotors! I know I drive hard, but I've never tracked the car and I really did'nt think I drove all THAT hard!
Has anyone else with 50k miles seen there rotors needing to be replaced? Is this normal?
04-12-2007, 05:39 AM
#2
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40,000 [+- 20k] miles has been the average 1mm per side front wear rate for about 15 years.
Engineers try to guess from data and balance pads and rotors so that an extra trip is not required for replacement pads every 20k and rotors every 40k.
Driving locations and traffic and aggressiveness and speeding vary so much across owners that it is impossible to guess an application number per mile of driving.
So a mileage wear number doesn't compute easily............how many applications did you do and how many seconds each at what foot pressure in the 50,000 miles?
Some drivers destroy the rotor in 20,000 miles!
Engineers try to guess from data and balance pads and rotors so that an extra trip is not required for replacement pads every 20k and rotors every 40k.
Driving locations and traffic and aggressiveness and speeding vary so much across owners that it is impossible to guess an application number per mile of driving.
So a mileage wear number doesn't compute easily............how many applications did you do and how many seconds each at what foot pressure in the 50,000 miles?
Some drivers destroy the rotor in 20,000 miles!
04-12-2007, 07:38 AM
#3
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30k on my fronts, they cant be turned again. So i will be replaced here in about a month along with new pads. OEM pads and rotors are quite soft to give them better bite during braking. Its a trade-off. Also it depends how bad your rotors were warped before as to how much that had to milled. I wish i got 50k out of the rotors
04-12-2007, 01:22 PM
#6
Will you people stop turning your rotors each time you change your pads ? Please ?
Unless there is a problem with the rotors (shudder, vibration, not planar), leave them on the car. It might take a bit longer to comple the bed-in and get the maximum out of the brakes, but the rotors will last much longer!
Unless there is a problem with the rotors (shudder, vibration, not planar), leave them on the car. It might take a bit longer to comple the bed-in and get the maximum out of the brakes, but the rotors will last much longer!
04-12-2007, 03:35 PM
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Originally Posted by Kolia
Will you people stop turning your rotors each time you change your pads ? Please ?
Unless there is a problem with the rotors (shudder, vibration, not planar), leave them on the car. It might take a bit longer to comple the bed-in and get the maximum out of the brakes, but the rotors will last much longer!
Unless there is a problem with the rotors (shudder, vibration, not planar), leave them on the car. It might take a bit longer to comple the bed-in and get the maximum out of the brakes, but the rotors will last much longer!
^+1 Zillion^
Last edited by Ztalker; 04-12-2007 at 05:00 PM.
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04-13-2007, 03:51 AM
#9
I guess it's just odd to me. I'm old school and used to almost never having to replace the rotors. After 75k to 100k i figured I would have had to turn them. And pads replaced every 20k to 25k. Never thought that 50k would be both tho.
Back in the day I worked on cars the rotors would last forever and "maybe" need turning once in the life of the car. Now days it's common :-( Guess I need to get with the 21st century.
Back in the day I worked on cars the rotors would last forever and "maybe" need turning once in the life of the car. Now days it's common :-( Guess I need to get with the 21st century.
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