I have 07 Tahoe LT which has the 17" wheels on it. I found somebody on my local craigslist that has the OEM 20" wheels with Bridgestone tires that have 90% tread life on them yet. I want to pick these up but the dealer can't seem to tell me if they will fit my 07... Does anybody know the answer to this... 20" wheels are of an 09 Tahoe LT and I want to put them on my 07 Tahoe LT...

If they fit the 2009 they should fit your 2007. They both have a 6 lug 5.5 inch or 139.7 mm standard offset. 20" were available as an OEM option for both years, and if you look up 20" wheels for either vehicle on the popular tire websites (Discount Tire, Belle Tire, etc.) they list the same wheels for both vehicles.

Ok... This is what I assumed and can't believe the dealer has no way of validating it..?? Strange... He'* asking $900 for the rims with the TPMS system and Bridgestone rubber with 80-90% tread life left. I need new tires anyway which will cost me about $700+. So i figured why not get these rims and tires... That'* like getting all 4 rims for about $300...!