lmao...i have the exact same wheels on mine...they are actually LIGHTER than stock....took away 6mph in the QM, and killed .7 seconds! its the unsprung weight that makes the difference...the weight is further from the center of the wheel, so it takes more torque to move them...basically, the weight has more leverage on the axle, so less snap. if you go racing, just put the steelies back on the front and you are game. nice choice in wheels tho