I have a chance to pick up a nice set of Cobra R's for a good price, catch is they are chrome. They are also 17x9 and both sets of my current wheels are 17x8. I was primarily interested in having these for my street tired only, but they are wider and I can fit 275's on there with these. So, given that the chrome wheels are heavier, how much of an impact is this going to make? Huge, moderate? I would love some lightweight racing wheels but that isn't going to happen right now. And it looks like I missed tireracks sale of a the 18x10 WedsSports for 99 each . So will the heavier wheels kill my performance or is it an ok compromise?