Trailblazer Tires

I have a 2003 LS Trailblazer with 245 x 70 x 16 tires that are made by BFG and are the T/A. The have over 67K miles with little tread left. I've had very good luck with them. They are about close to zero tread left and I got a hold of some 245 x 75 x 16 tires cheap. Will they fit ? There seems to be a lot of clearance. I plan to use them only a couple of months. Help.

Yeah, they should fit no problems. If there is a problem, it will probably be with the front control arm. Check this site out to see what the difference in size will do:
http://www.miata.net/garage/tirecalc.html