front brake rotors

aren't they held on by a big nut?

 

they're held on by 5 big nuts. it is normal for the rotors to be loose when the wheels are off. if the pads look good and the rotors look good, don't worry about it unless you're getting noise or vibration when you brake.

 

thanks. it's funny cause most folks say they are frozen on when they need to change them.

 

well yeah they do get rusted on and I've had to beat the f--k out of some to remove them. some companies do have a small bolt to keep the rotor from moving with the wheels off, but that's really not needed cause once you torque the lugs, it ain't moving. I've also seen some type of anti-seize on the hub to keep em from getting stuck.

 

You are probably thinking of the axle hub nut. That nut does not secure the disc.

Rather, the disc is held generally in place by the disc caliper, and then when the wheel is installed, the five lug nuts hold the wheel and the disc firmly to the hub.

The disc usually will have two threaded holes. The idea is to insert the appropriate metric bolts (M6 size I think) into those holes if needed, to unscrew the disc away from the hub - so in theory no pounding of the disc should be necessary when removing it. The same concept applies to the brake drums.

 

My rotors are the same ones that came with the car, the pads are the second set. I'm at 364,000 now and won't be stopping any time soon. I use the regenerative system to stop / slow 99% of the time and spent the extra $ on a can of plastic dip to try different wheel looks.


iPhone ?

 

usually 8mm x 1.25mm threaded holes in jap discs. but us and kraut rotors don't have those holes. benz and bmw rotors are sometimes rusted on so bad you got to get the biggest no bounce mallet snap-on sells and take a home run swing to break them free. fortunately I do like hitting german cars with big hammers. next best thing to hitting the drivers.