http://ricksontruckwheels.com/tires-175-truck.php

These are all truck tires, not trailer. Tire Rack has the Yokos for about $1400 a set.

I'd be thinking about switching to 17s or 18s.

A 10.5 wide tire fits under the front, and an 11.5" wide tire fits under the back. Both if you have the right back spacing.

R.