I am about to sell my Sidekick and removed the 16x7 AR 136 American Racing aluminum wheels installed. I tried it on my GV but unfortunately, the calipers rub on the inside of the wheels.  A friend said that carefully and tediously grinding the caliper is a usual practice for GV using aftermarket wheels. Is this advisable? Some say using a 1" aluminum spacer with built-in stub bolts is the right way.

I am confused as to what route to take.

I think if you grind the calipers down with some discretion you won't have a problem. I wouldn't grind them down much less than 1/2" to be safe. There is no price on safety...$100 for a pair of wheel spacers isn't going to kill you like a failed brake caliper.

Shaving your calipers is silly, expecially since you will need to shave quite a bit to get these to fit. You can convert to vitara rotor/caliper or go with the 1" spacers.

Dude, just get some 1" wheel spacers and call it a day.

Thanks for all the inputs, I do like the option of swapping the Sidekick rotors/calipers with the GV to fit the AR wheels, but on the aspect of reliability/stopping power?  A 1600 rotor/caliper installed on a V6 engine might have safety and reliability issues.

As for the 1" spacers, my concern is the stress on the CV/axles joints, as for the shaving of the calipers, does anybody know how much grinding would be "enough" (in mm or inches)?

I would just go with the spacer if I was you. Downgrading your brakes and then upsizing your tires seems like a double negative to me. The spacer isn't going to have any effect on your CV axles...it will put more wear and tear on your ball joints and wheel bearings though.

I had a 1" T6 spacer made and it fit the AR wheels (16" x 7") just fine with no rubbing on the calipers