Theoretically, how long can my cooked rotors last?
#1
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Theoretically, how long can my cooked rotors last?
I've got some Stoptech 13 inch rotors with quite a bit of wear. How long, based on the description and picture, could they last?
So I bought a set of used Stoptech st-40 with two piece rotors from RastaSteve in February. It was a great transaction I am very happy, but I knew going into it I had some rotors with 30,000+ miles on them. I've since put another 10,000 miles on them and a total of six days at various tracks.
I am having no braking issues whatsoever. I do not plan to track it until I replace all four rotors, pads and fluid. I am simply daily driving it and trying to use the brakes as little as possible.
The rotors are quite worn, with a somewhat prominent lip on the outer rim of the rotor. This is normal, but becoming worrisome because the wear is greater near the aluminum hats. I measured them with a caliper at 29mm, but it could be less near the hat.
I am also becoming worried about the amount of cracks showing on the face of the rotor. None are large enough to catch your fingernail. They are all very small, but could show deeper issues.
My biggest problem at the moment is finances. I just used up my car fund to replace the differential bushings with SPL and subframes with Whiteline. I felt these parts interact with the drive of the vehicle, and at this time are causing the diving board effect at an ever alarming rate. I figured the brakes, which work fine at the moment, could wait, but my drivetrain could not.
Back to the question at hand. Would you, esteemed owners of 350Zs, risk your **** and wait to save money for new brakes? Or would you sell some stock, take a loss and replace the brakes?
So I bought a set of used Stoptech st-40 with two piece rotors from RastaSteve in February. It was a great transaction I am very happy, but I knew going into it I had some rotors with 30,000+ miles on them. I've since put another 10,000 miles on them and a total of six days at various tracks.
I am having no braking issues whatsoever. I do not plan to track it until I replace all four rotors, pads and fluid. I am simply daily driving it and trying to use the brakes as little as possible.
The rotors are quite worn, with a somewhat prominent lip on the outer rim of the rotor. This is normal, but becoming worrisome because the wear is greater near the aluminum hats. I measured them with a caliper at 29mm, but it could be less near the hat.
I am also becoming worried about the amount of cracks showing on the face of the rotor. None are large enough to catch your fingernail. They are all very small, but could show deeper issues.
My biggest problem at the moment is finances. I just used up my car fund to replace the differential bushings with SPL and subframes with Whiteline. I felt these parts interact with the drive of the vehicle, and at this time are causing the diving board effect at an ever alarming rate. I figured the brakes, which work fine at the moment, could wait, but my drivetrain could not.
Back to the question at hand. Would you, esteemed owners of 350Zs, risk your **** and wait to save money for new brakes? Or would you sell some stock, take a loss and replace the brakes?
Last edited by Sooner350; 07-28-2010 at 10:22 PM.
#5
Hmm interesting, my rotors are pooched too but not to the point of cracking! I would have the things replaced forsure if they ever were to show cracks. Right now I'm just puddering around town for the most part and have my street pads in so I'm not too concerned.
It scares me that you can see cracks although the cracks are probably from heating/cooling at the track and not street driving. Try doing longer cool down sessions, even if the track marshals are being boners try finding a place off the track to continue your cool down to help prevent cracking.
Just keep in mind that a rotor cracking while driving is likely to be quite catastrophic, probably similar to getting a stick in your bicycle spokes when you were a kid. If the rotor were to actually break it would probably misalign itself and catch your caliper/pads and destroy them and cause you to lose control.
It scares me that you can see cracks although the cracks are probably from heating/cooling at the track and not street driving. Try doing longer cool down sessions, even if the track marshals are being boners try finding a place off the track to continue your cool down to help prevent cracking.
Just keep in mind that a rotor cracking while driving is likely to be quite catastrophic, probably similar to getting a stick in your bicycle spokes when you were a kid. If the rotor were to actually break it would probably misalign itself and catch your caliper/pads and destroy them and cause you to lose control.
#6
Microcracks are fine and typical. Small cracks will eventually turn into big cracks - the catch-your-nails kind. If you don't have any of those, no need to worry; just keep a close inspection every few weeks.
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#9
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OK, I have a little more confidence in them, but will still replace them as soon as possible. It shouldn't take too long to save the money, but in the meantime I guess I'll be driving like your blind, hunch-backed, 87-year-old grandma.
#10
Why, mine are worse and will get replaced at the end of the season. I still have 2 more time attacks left.
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