I don't know about towing with them and I haven't seen any of the trucks pulling anything either but that does not mean that they would not hold up. Most of the people who are going to buy these probably are not going to be hauling much more than a motorcycle anyways.

I would think that a 315/40/26 would be a good fit on these wheels. Out of all the trucks I have seen with the wheels on them only 1 or 2 actually look nice while other look like DUB toy cars.