Thanks. I had about 500lbs in the bed with two adults and one child in the front this weekend and the rear tires rubbed a few times. After removing 200lbs of corn it didn't rub again. I have fox shocks and have since ordered new 300lb springs.
I'm really enjoying the xtr370 tires so far. They ride smooth at 13 psi, clean out well, and have plenty of grip when crossing creeks climbing the banks. In addition the larger 30" diameter tires roll over fallen trees/logs much easier. They are a little noisy on payment but not too bad.