Caliper rubs on wheel after upgrading to 934s

GLAMIS WEATHER
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AlpineFunco

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Title says it all. Got new arms and hubs and now the caliper locks up my wheels. Pics attached. Third pic is with skinny tires just to show rubbing on caliper. Way I see it I've got three options.

1. Grind down the caliper till it doesn't rub. Love the zero cost on this, that's about it though.

2. New calipers. The arms have 2 more holes for a different caliper. Guessing these holes are for whatever they put on the new cars.

3. New wheels. Upgrading to 17's is the plan, was just hoping to put it off for a while.

Anybody been down this road? I'd hate to buy new calipers and find out they still rub. Is there a solution I'm not seeing??



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Well I thought this was in the Funco forum, guess not. If someone can move it there or to the tech section I'd appreciate it.

Thanks.
 
So your using the old calipers on the new gen six arms, hubs and rotors?
 
Kind of. I bought the 934 hubs used. They came off of an old gen 4 car. They looked just like my old 930 hubs, just bigger. Had Funco build new 934 arms. I don’t know that they specifically are gen 6 arms. I’m thinking they are built for the new stuff, but they also drilled and tapped holes for my old calipers.
 
Hmmm. Something is off then. Must be the newer measurements on the arms with the tabs for the calipers. All the gen 4 934 stuff fit 15 inch wheels no problem.
I forget the rotor size difference but it was like 12 inch to 12.5 inch diameter and the caliper won't swap due to the diameter of the rotor.
I'm pretty sure the late model gen 6 934 arms, calipers, rotors etc only fit 17 inch wheels.
 
Yeah, sure seems like the best way to fix it is the 17" wheels and tires.
 
Had same issues. I bought special 15” rims where the inner hat of the rim was straight across. Most have a step in there. I 100% wanted 15” stuff so was important to find. You could add a 1/2” spacer that might take care of everything. From the pics it almost looks like the disc does not protrude the two pads? If not you could push the calipers in more but would require to cut off the small caliper tabs and rebels them with caliper set in more towards the center. No issue with disc past the pads
 
John@Outfront said:
Had same issues. I bought special 15” rims where the inner hat of the rim was straight across. Most have a step in there. I 100% wanted 15” stuff so was important to find. You could add a 1/2” spacer that might take care of everything. From the pics it almost looks like the disc does not protrude the two pads? If not you could push the calipers in more but would require to cut off the small caliper tabs and rebels them with caliper set in more towards the center. No issue with disc past the pads
Click to expand...
The caliper is as tight to the arm as it's going to get. That step you are talking about is the problem. I thought about wheel spacers, but I think it would take at least an inch or more. I also don't want to widen the rear tires as the car drives right into my box trailer and also barely fits in my garage. Do you remember cost and where you got the wheels without the step?
 
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