...the holes vent gas from the rotor surface which tends to cause extra heat, warping, and cracking on a sealed surface rotor.
Same thing with slotted... they vent the gas.
Originally Posted by elsabor67
No problem GT. The way I understand (and correct me guys if i'm wrong) is that the holes on the rotor are supposed to work as a fan to maintain the rotor cool under braking so they won't over heat and then your brakes fail. this is what they look like...
I wasn't aware that the TMS rotors were OE BMW rotors. Thanks for the info M3F.
I thought about the Brembo's MZ, but a Soldier that works with me has them on a Honda Accord (Bigger ADing Ding Level) but he was having alot of problems with them.