Oversized tires and lifts are unapproved modifications. Dealers have some discretion (and many turn a blind eye) but technically you must stay within the OEM tire size to guaranty warranty coverage without hassle. In theory oversize tires compromise the ABS and traction control tuning and puts additional loading on the transfer case and axles.
There have been two reports here of dealers putting oversize tire notes into the data base for a VIN and folks subsequently denied warranty for transfer case issues. First one covered, second one not. Getting that note attached to tour VIN can be a source of frustration down the line.
Dealers must show that your mod may have contributed to the failure, they can't deny a radio warranty claim because you run oversize tires.
There doesn't seem to be many failure reports here, let alone those that may be due to tires or lifts. So the situation rarely comes up. These have light truck duty type drive trains, so you can't push them much without getting into wear trouble.
2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6, 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac