lucki96gt

O.K. guy just a quick question. Me and a friend is going to Atlanta dragway on March 6th and I have (05 GT)falken 452 255/35/20's and he has (04 GT)vredestein Ultrac Sessanta 295/35/18 on back. We also got a 4 99-04 stock bullets with Nexen N3000 245/45/17 with about 75% tread on them. He was saying we should both put the stock 17's on when we go, he put two on back and I put two on back. My question is how much would I benefit from this, if so how much? And would he benefit from this?
And would I have any problems putting and stock 04 wheels on my 05.
Thanks!