Ok I have a 2007 2500 mega cab with a 6 inch lift and Mickey Thompson FCII 37's on Mickey Thompson Classic Lock rims. Im looking to get some new rims and tires for when I tow my camper. Im looking at the Nitto Tera Grapplers in 305x70x17. I see that a lot of guys like them. For the new wheels, does the weight rating make a big difference. Mine are rated at 3100 pounds and I was not sure if I needed more heavy duty wheels for towing.

Also do you think its gonna look stupid with the smaller tires?

Thanks