Thanks guys. Not doing any heavy hauling, but more than a play truck. My philosophy with this truck is to use it as an around the house work truck but want the flexibility to be able to travel 100 miles or so as well with a light or medium load (few hundred pounds). Mostly for transporting veggies, compost, lumber, maybe some gravel, etc...
I think I will watch craigslist and the used tire shops. If I run into a problem before then, I'll have to bite the bullet.