I have two Hercules H-902 215/75R17.5 on our rig after having problems with Sumitomo. Be aware they are manufactured in China. At one point I wouldn't have considered a Chinese tire, but I bought them after my local dealer, a fellow RVer, recommended them. We don't travel as much as we used to and I had a hard time trying to personally justify a set of GY G114 that would age out before wearing out.
The load and speed ratings on the Hercules meet or exceed that of comparable tires. I figured I can replace tires every three years at less cost than replacing G114s every five years. So far we have a little over 5,000 uneventful miles on them. I have two remaining Sumitomos from a different batch that are wearing well. When those age out, I plan on replacing them with Hercules.
If you decide on Hercules, I would shop around. Less than two years ago, mine were $189.95 each locally before balance and taxes.
Dave & Jo Ann
'08 HitchHiker Champagne 35LKRSB | '11 F350 Lariat 6.7PSD