Guys i need your opinion.
5 track days, 20k miles on DS2500 (3 days)

Front Stock Right Rotor - Hairline Cracks


Front Stock Left Rotor - Hairline Cracks and Weird Wear



Will these last 2 track days on Raybestos ST43 pads w/ Ti Shields and Motul?

I want feedback and opinions from people who ONLY track their car HPDE/Race/TT.

I do not want to change out hot rotors at the track. Just seeing if i can get my money's worth out of these.

Other things to take note...Thunderhill Raceway Willows, CA
One 125mph - 85-90mph braking zone
One 115mph - 40mph braking zone
One 115mph - 60mph braking zone

Mods in Sig. Tires = Toyo R1R 255/40/17. ~3260lb race weight.
Again, will these last back to back track days on Raybestos ST43 pads w/ Ti Shields and Motul?

 

In my opinion, "if you doubt your brakes, switch em." I know you want to squeeze the most out of your brakes, but you know that these are our lifeline literally as much as your cars. I've seen plenty of scary moments with sketchy brake set up at track with other cars, so I suggest don't chance it and change your rotors then you'll be 100% confident, which I'm sure you'd rather be.
JFYI, my rotors lasted about 5-6 track days and it was done. I'm running hawk blues and they really eat up my rotors. I just got new one this coming year, so if you had yours 5-6 track days and sounds like you are getting on them too with your race pads, I say its about right time to switch.

btw I just saw you want to run back to back. Then I highly recommend you switch your rotors. Well at least I would, though I am not a brake guru...JMO

Good luck and be safe at track, I'm looking forward to mine

 

Rotors are relatively cheap, your life is relatively expensive -- which one do you want to replace?

 

I would run them for 2 days yes, the cracks are very shallow are nowhere near the edges just be sure to check them after every session.

 

NO other way to really put it.

 

Sure rotors are cheap but you have to draw the line somewhere or you'll never get out of the driveway.

Those rotors are not close to failing.

 

I would think they'd be fine for what your wanting to do with them.. probably lots of people have rotors like that but don't check.

That said, If they were mine I'd change them..

 

when i lightly drag fingernail over the cracks, i do not feel it. Do not feel any bumps or resistance. Don't have a "lip". Probably not even .5mm. Thanks guys.

 

As long as they don't get like this one.

 

Damn, were those a result of a track day? What are some good cheap replacements for the stock units?

 

Those look like Performance Friction rotors.... Someone wasn't running proper cooling ducts!

 

Oh yes "Someone" was.

 

What rotors are those (OP's), OEM or aftermarket? My rotors look nothing like that and I run the DS2500 pads as well.

 

Holy crap dude! How long did you run them for before that happened? I was thinking about getting those for autocrossing. Also thinking of Stoptech Aeros.

 

There's about 12 track days on those.