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The G614's were on 3 of our 5th wheels and the sidewall said 110 lbs of pressure and I maintained 110 lbs. My reason is if the tire isn't at 110 lbs the tire can flex more, therefore flexing will cause heat to build up. And we all know heat isn't good for rubber. And at road speed the tires will go up about 8 to 10 percent. Never had a issue. I have Goodyear 17.5" G114s and the side wall calls for 125 lbs cold pressure. I also run the Pressure Pro system. I highly recomend the Goodyear G614s and or the G114s. GBY...
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