Kelly,
To get the full benefit of the G rated tires you need wheels and valve stems rated for 110 PSI. You can run them with 80 PSI wheels but they will have less load capacity. Your wheels should be marked on the inside. I believe Montana went to 110 PSI wheels in 12.
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Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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