I did the comparison on my car Ron.....a little over a tenth and 1-1.5 mph, and my 16" snowflakes are lighter than some of the 17" rims that are on the ss and ws6 so the improvement might be more for you. Needless to say I was surprised at the gains like everyone was telling me. it all depends on the skinnies too, i did weigh the welds and hoosier tires that Jersey ta let me borrow they weighed 20 lbs. each against 45 lbs. for my snowflakes and street tires. So saving 50 lbs. of the front and the rolling resistance which I think is the main factor is well worth it!