emptnest

I have a 1993 with j55 brake option. Will soon be upgrading pads and rotors for HPDE.

Did the J55 option upgrade both front and rear, or just front?

I know the front is 13 inch. What size rear rotor will the j55 be?

Thanks

WVZR-1

Fronts only - rears remain the same!

emptnest

Thanks for the info.
Lets Gooooo Mountaineers !

C4in mesa

The J55 brakes use the same pads in the bigger calipers as standard 12" calipers.