2015 IRS 13" Brake Interference Issue

[JMeyer914]

I'm having issues with my rear brake installation with the 2015 IRS. These have the FFR designed bracket to relocate them from the 3 o'clock position to the 12 o'clock position on the rotor. The lower caliper mounting bracket bolt / nut is interfering with the rotor when the rotor is tightened up to the hub. Has anyone else run into this issue? I've tried adding some washers under the bolt but am finding that even with washers that the nut is interfering with the rotor.

93641

An option that I haven't tried yet would be adding spacers behind the rotor on the studs to move the rotor out but this is going to shift the whole caliper at the same time. Looking for opinions and ideas.

Thanks,
Jake

[CraigS]

The had of the bolt looks to be a little thinner than the nut. Swap ends? If not quite enough I would grind down the head of the bolt a bit.

[JMeyer914]

That's a good suggestion which would probably work. But it will mean that I have to remove the rotor prior to installing the caliper mounting bracket assembly supplied by FFR. The caliper will have to be removed from the mounting bracket, the rotor reinstalled and then the caliper mounted to the bracket. I think I'll get in touch with FFR before going this route to see if they have any other ideas.