Well here's some interesting info I was able to dig up while researching this new tire.
Mickey Thompson 28x6.00R17LT Sportsman S/R:
Weight: Approx. 22 lbs.
Load Rating: 1025 lbs. at 50 psi
M&H 4.5/28-17 Bias-Ply Front Runner:
Weight: Approx. 17 lbs.
Load Rating: 1325 lbs. at 35 psi
So the M&H Bias-Ply has a higher load rating than the radial M/T????....I certainly did not expect that!!! And I suppose 5 lbs. of added weight per tire is about right. Hmmm, what to do....what to do?