I have a question regarding different wheel/tire and weight combinations. Because this is dealing with a strickly performance issue, I thought this would be a good area to ask the question. I have 20" wheels and 285/55/20 tires. The weight is 90 pounds a piece. I'm looking at putting 285/75/16s on the stock rims. The 16" wheel and tire combination is 70 pounds a piece. How much is the 20" combo going to hurt me E.T. wise in th 1/4? Is reducing 20 pounds per wheel and tire going to help that much? I'm looking for added performance but am wondering on average how much it would help? Would it be a tenth or as much as 3 tenths, any ideas or experience with reduction in wheel/tire weight reduction? Thanks!