Jeep grand cherokee tires
will 265 60 r20 rub if I change my stock tires 265 50 r20
These tires are 2.1" taller. Measure the clearance but I suspect they may rub.
The Jeep is newish and under warranty. Check with the dealer to see if moving to a larger tire might cause a problem with your warranty. It is possible as this could cause transmission issue, as well as other things.