I was scoping these forums for the biggest tires to fit a tahoe without modification and so far i THINK some people said a 285/75/16 is the biggest (it's time to replace the bike tires that the previous owner put on). I was just wondering if this would also be the case for the Z71 package. I don't know why it would be any different but if it is and someone knew, i'd like to know lol. Tires are the first thing on a long list of things my truck actually needs before i can do fun stuff