some SOB stole the spare last night from my 2011 Ram SLT 1500 Big Horn. Dealer tells me it was a 235/85R17 in there and huge $ to replace. Can't I just put a 275/60R20 in there like on the truck also, where can I get a lock to prevent this from happening again. Ram's seem to be targetted as my insurance agent had all the emblems ripped of of his 1 week ago with lots of damage. Seems strange for a town of only 500.