New OEM Cross Drilled Rotors for the Base Boxster

[Franco]

Hi, I just finished installing the rotors and the OEM'S are the exact diameter as the ZIMMERMANN and there's no way to fit bigger diameter rotors unless you put spacers to bring out the calipers to compensate for the increase in diameter size and that would be useless unless you used bigger pads.

Anyway they look nice and I'm happy

It's 1:25 AM and I'm exhausted goodnight

PS: The install was a real joke


ddb, Thanks

[efahl]

Originally Posted by Franco

there's no way to fit bigger diameter rotors unless you put spacers to bring out the calipers to compensate for the increase in diameter size and that would be useless unless you used bigger pads.

Actually you'd get two benefits: 1) longer moment arm and 2) more thermal mass.

[insite]

Originally Posted by efahl

Actually you'd get two benefits: 1) longer moment arm and 2) more thermal mass.

you don't get a longer moment arm unless you move the caliper / pad out to the edge of the larger rotor. otherwise, you're grabbing a larger rotor at the same radius you would a smaller rotor. more thermal mass helpful, but its affect is secondary to the longer dwell time air moving through the rotor vents.

on the downside, increased polar moment of inertia, more rotating mass, more unsprung weight.

[efahl]

Originally Posted by insite

you don't get a longer moment arm unless you move the caliper / pad out to the edge of the larger rotor.

I agree, I was assuming the aforementioned "spacer" to relocate the caliper out to the edge of the rotor...