I changed brake pads on my Toyota Sienna LE 2009. I used these pads https://shop.advanceautoparts.com/p/carquest-wearever-platinum-professional-ceramic-brake-pads-front-4-pad-set-pxd906ah/10866511-P I had hard time fitting the new pads into the caliper bracket. When I insert one end, the other end would pop out. It as still possible to fit both ends in, but it took some effort. After the pads would not slide all the way to the rotor by hand. I was still able to fit the caliper on the bracket with new pads. After pushing brakes, the piston and caliper did squeeze pads to rotors of course. I took the car for a test drive, and of course got the rims overheated. I suspect the pads do retract well. Nothing horrible happened from 3 miles drive, just hot rims and smell, but it is not good.
I was surprised to see this situation. It must be the right fit. At least that is what Advance Autoparts says. I changed brake pads a few times and at least one on this vehicle but never experienced something like this.
I was looking online, some folks say that the most reason for this is rust buildup on the caliper bracket, so need to clean it. Well, the bracket is rusty to an extent but I do not think there enough rust to add substantially to thickness.
What if pads of this model of pads or just a batch are just a bit longer. It is a matter of just one millimeter really. I guess I can try to return the pads, get a different kind and try to fit them. Not sure the store will take back after they have been installed already. Or should I try to sand off half a millimeter on each end of pads? Do those ends have some protective coating which should not be sanded? Should I sand and clean the caliper brackets?