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      03-03-2025, 03:48 PM   #9
kolosy
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Drives: over potholes
Join Date: Dec 2008
Location: Chicago

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Quote:
Originally Posted by DrFerry View Post
kolosy The deep grooves indicated in the image below are what would worry me. I once had a rotor snap in half coming under the bridge at Road Atlanta just before the downhill leading onto the front straight. The rotor failure was caused by crack propagation leading to fast fracture. The groves I'm pointing to butt into the diagonal vent slots and at this juncture it's possible cracks could begin due to fatigue.
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lol @ "new underwear location"

i don't remember those grooves being as deep as the one that concerns me, but will take a closer look once i get the car back.
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Current '20 AG X7M50 (daily + track tow), M4 GTS (track), '21 X3 M40i (wife)
Recent Past '11 E90 M3 (track), '21 DG X5MC, '22 BG G82, '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3

Cleaning out my garage -- stuff for sale
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