Phil 9xx

These are Frozen Rotors used on my 944T track car (DE events). These have seen 4 DE weekends last summer at BIR in MN and at Road America. Hairline cracks showing all around, so I'm wondering if these are on their way out. Any advice? They aren't pulsing (yet). Thanks!

lart951

You need to visually inspect for cracks but most important you need to measure thickness there are specific factory tolerances for minimal thickness

Phil 9xx

Thanks. They're at 27 mm, so not bad. I can't remember what thickness they were brand new.

MAGK944

28mm new and at 26mm they are done according to Clarks so you should be good.

Phil 9xx

Awesome! Thanks, all!

eniac

Keep an eye on the cracks, when it gets the to edge of the rotor then it will start to pulse and quickly worsen. These still have some life left in them but how much longer really depends on your driving and the pads being used. Road America can be pretty rough on brakes and heat. I suggest Hawk DTC60 pads on the front, DTC70 in the rear if you dont have a bias valve.

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