My man, my man, you need a light truck tire with a reinforced sidewall.
Don't waste money on those low-end tires.  You will have the best results
with Bridgestone or Michelin in LT series.  Depending on how aggressive a
tread pattern you need.

Call the people at Tirerack.com too, they should confirm

Do not, I repeat, do not trust "non-Vanagon" people on advice for something
this important.

Just my .02 worth

HKS