LOL...everyone worrying about stretch. Im pretty sure that EXTRA tire protecting your sidewall going from a 285/30 to say a 305/30 is NOT going to help if you nail anything. Lets be honest, the sidewall height is going to be 6mm larger, and it might not expose the lip of the wheel. If you are rolling around on $5k+ wheels, you are most likely going to be paying attention to the road anyway.

Ill be running 235 on my next 9.5s anyway