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YOUR RESEARCHRotors question?
Leading reported evidence
Use hawk blues
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I get a whole season out of my front rotors on my 993 (Big Reds) and I use Hawk Blues which are pretty aggresive.
Leading evidence: 'Use hawk blues' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check front rotors first' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Check the front rotors first because they take the most abuse.
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Suggestion · Original poster
Very nice!!!!Well after inspecting my rotors looks like the fronts got some hairline cracks around the holes but rears look fine so going to get it replaced before my next track event.
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Suggestion
Run some air to the rotors and that will help a lot.
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Suggestion
Look to see if any of the cracks are spanning from one hole to another or if the crack lines are starting to run together in between the holes.
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Suggestion · Original poster
Very nice!!!!Well after inspecting my rotors looks like the fronts got some hairline cracks around the holes but rears look fine so going to get it replaced before my next track event.
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I was wondering how many miles rotors would last given 11-12 times on the track a year and city driving? My car has about 34k on the ticker now on original rotors. I have Pagid black pads installed and gone thru 5k miles on it. Regards. Mike
It depends on so many things, that it's hard to say. I'm starting my third season on frozen rotors with PF 90 pads (er, the pads aren't starting their third year), but I only do about 4 DEs and 8 autoxes a year. I know a 964 PCA club racer who says he goes through 4 sets of front rotors in a single season. Some aggressive pads wear the rotors much quicker than others, and some drivers are easier on brakes than others. I don't know how hard Pagid blacks are on rotors, but, depending on how you use the brakes, your rotors may or may not last 11-12 track events.
Run some air to the rotors and that will help a lot. I get a whole season out of my front rotors on my 993 (Big Reds) and I use Hawk Blues which are pretty aggresive. A season is about 4 race weekends and 10 DE's. I didn't really see any advantage with the frozen rotors, fwiw.
It depends on so many things, that it's hard to say. I'm starting my third season on frozen rotors with PF 90 pads (er, the pads aren't starting their third year), but I only do about 4 DEs and 8 autoxes a year. I know a 964 PCA club racer who says he goes through 4 sets of front rotors in a single season. Some aggressive pads wear the rotors much quicker than others, and some drivers are easier on brakes than others. I don't know how hard Pagid blacks are on rotors, but, depending on how you use the brakes, your rotors may or may not last
11-12 track events.
Man you're selling your track car,Greg? So what's next for you? Thanks for the info- I mite just replace them before the next track event-I would **** in my pants if rotors cracked-Done for the day-arghhh!!!!. Regards. Mike
Mike,
Check the front rotors first because they take the most abuse. I use up two sets of fronts rotors for every set of rears I use.
First examine the holes for any hairline cracks. With the amount of DEs you do, there must be some cracks. Look to see if any of the cracks are spanning from one hole to another or if the crack lines are starting to run together in between the holes. If you see this, it's probably time for new rotors.
Then measure the thickness of the rotors. My rotors have a minimum thickness measurement scribed in the hat. If I remember right the fronts are 28mm minimum. Measure the thickness of your rotors and if they are getting close to the minimum, it's time to replace them.
You can repeat these same checks on the rears but they are probably ok.
Karl
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by 996FLT6:
<strong>Man you're selling your track car,Greg? So what's next for you? </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">If I see her I would get a Radical. If you ever get a ride in one you will understand why.
If you do get new rotors keep the old ones for spares just in case.
Radical-they got that name right. Very nice!!!!Well after inspecting my rotors looks like the fronts got some hairline cracks around the holes but rears look fine so going to get it replaced before my next track event. Thanks all!!!! Mike
Mike,
Some cracks are okay -- and some are not. If you want the factory specs on rotor wear (and cracks) I can email you the PDF files. Just let me know.
