I could tell a very noticable difference in acceleration from the stock RS 14's, to my 17's. The 14's seemed to get me moving faster from a stop. IMO, run the 14's up front, and use at least some good drag radials,like Nitto 555's, or better yet, true drag slicks. I am looking into going with true drag slicks to either fit on my 14's, or find some cheap steel 15's to put the slicks on.. Its VERY difficult to get very good launches with a FWD car, esp with a turbo. Takes lots of practice.

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)