Whats the Biggest Tire I can fit under my 98 blazer = NO LIFT ?

[DaveM98Blazer]

I'm looking to replace the tires on my 1998 Blazer 4x4

I believe they are current 225/75/R15's

whats the Biggest I can go without lifting?

i am looking at a set of BFG All-Terrians because i do wonder off into the bush while fishing and just want something a tad more agressive and a bit taller then my stock tires?


also what would it take to get a set of 30-31's under my Blazer?
would 2" blocks in the rear and cranking the bars up front work for 31's ?


thanks

Dave