pic for reference

 

either rotor is too small or caliper bracket wrong.

 

Not uncommon when doing any brake swap. Same/same on a lot of the E36 chassis swaps.
No harm.

At least the contact patch is towards the OUTSIDE! I've seen guys do a swap and the outside of the rotor is w/o contact....
What was the point of the swap?

 

If it was just aesthetic I wouldnt mind, but I noticed some cracking of the pad near the edge that contacts the rust, also im starting to get road noise/squealling when on the brakes as well. I plan to change to a different compound but before I do, i wanted to see if there is an option to address this issue properly

Thanks!

 

Which pads are you using?

 

I found Propellerheads Engineering somehow, but their product description is insufficient and when I contacted them I couldn't understand precisely how offsetting the caliper solves anything because of the language barrier. If you are willing to talk to them maybe we learn something more:

Adapter Buchse für Performance Bremse auf E36 E46 E90 E81 - PropellerHeads Engineering (phengineers.shop)

 

It's quite common for a pad not to reach the outer diameter, or the inner diameter on discs - most often inner is common. It's not an issue and these remaining surfaces are knocked down if the rotors are turned periodically during the operational life. I personally don't have them turned, but

 

I agree to a certain extent...the OEM front and rear rotors on my E46 03 M3 are slightly larger in diameter than the pad(s) and the pads clear the hub by about a ¼". The OPs pic, however, appears beyond normal engineering practice...the rotor looks like it should be about an inch larger in diameter to fully engage the pad. Back to incorrect rotor size and caliper bracket design...the caliper in the picture looks like only half of the caliper piston is utilized.

 

Do the pads have a lip at the top where they are not sweeping the rotor from sitting "too high"?

Sent from my SM-G950U using Tapatalk

 

thanks for the discussion everyone,

let me clarify a few things

this pad is made to fit the caliper, 135 rear caliper and rear pad
the rotor is the csl rear rotor diameter

 

I have no doubt. The issue is whether the rotor is large enough to utilize the entire pad.