Ok, my mistake on the C vs. S. I read it too quickly. My point still stands, though. And I sure as hell wouldn't put 20's on a C-class or 3-series. Just as stupid as putting them on a 6. And if you read my reply in the Choosing the Right Size Tire thread, you'll see where I prove it is stupid and you are exceeding the capabilities of the tire. I'm out. :blink::huh: I'm pretty sure i wrote, 3-series bimmers and C-class benz. Review the numbers. The math doesn't lie. I think calling them stupid might be a bit much. If they don't load up the vehicle they are not exceeding the capabilities of the tire.