I Post Entirely Way Too Much
Join Date: Jun 2010
Location: Chicago, IL
iTrader: 2 reviews
I did the weighing between a 17x8 with 245/45/17 and a 17x10.5 with 315/35/17, but can't remember the exact numbers. Think the 17x8 was around 65lbs. It definitely wasn't drastic. Wheels will usually weigh between 25-35lbs and same for tires. You do have to remember though that you are adding rotational mass. I've heard that the ratio of rotational mass to dead weight is 1:10. So 1 extra pound of rotational mass equals an additional 10lbs of dead weight.
With the above being said my car felt much slower on the street with 17x10.5 and 315/35/17 BFG drag radials vs 17x8 255/40/17 BFG KDW II street tires. At the track the 60ft improved by .2, but the car ran the same time as spinning on street tires. I got rid of them after two weeks. Picked up a set of 15x8 Weld Prostars which weigh 8lbs each with 275/50/15 BFG drag radials and the car went .36 quicker in the quarter. I do love the look of a wide wheel in the back, but I do not want the car to feel slower.
2003 DSG Mustang GT 5spd: Vortech V1 S, 3.12 pulley, Procharger 3 core intercooler: 411/402 @ 12psi
2004 DSG Mustang Mach 1 4r75w: Lowering springs, Flowmasters