i just recently bought new rims for my celica gts. They are 17 D power racing rims from japan with khumo ecsta 712. My question is, if the rim weighs 18 pounds, would it make my car slower. Specially when racing. Since i'm new here and still have no pics, i drive a 2002 yellow celica gts. Mods-eibach pro-kit springs, injen intake, custom cat back eshaust with no res 21/2 inch pipe all the way, full trd body kit,