I have a 2015 Mazda CX-5 AWD. I replaced the rear pads and discs about 2 years ago and they are already used up so something might be wrong with the caliper. I went to replace the caliper today and bought a replacement but the bracket bolts are bigger than the hole on the replacement. I went to another store and I'm seeing the same size. What is going on here? I bought the car used and it had about 30-35k. If I get the smaller bolts is that going to be a problem since the holes on the hub assembly are bigger? I'm so confused right now.