how much did you pay or are you going to buy them? unless somethings 12lbs or less for a 15" I wouldn't bother. I went from 17lbs to 9.9lbs per rim when I got mine. and got a light stock tire to match, dropped 3 lbs there, total of 10 lbs per wheel

think it over well and look for some blowout packaged deals
4 traklites cost me about 135 each.