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Old 02-24-2022, 12:53 PM   #1
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proper tire pressure

Hi everyone, new to this forum. I joined so I hopefully can get some questions answered. I have a 2019 Jayco Alante 29f motorhome and need to know what the correct tire pressure should be. On the inside of the coach, the Jayco label as well as the Ford label says that at gvw fully loaded, tire pressure should be 82psi, the info on the tires however (Goodyear G670 RV 245/70R 19.5) states that at gvw fully loaded should be 110psi. I called Jayco, Ford, and Goodyear. The person I spoke to at Jayco said to call Ford, Ford said to call Goodyear, and Goodyear said to go by their weight chart on their web site. Anyone know why there would be a 28psi difference in what the vehicle labeling states and what the side wall of the tires state? We recently purchased this coach after selling our 2004 Coachman Santara 315 which I ran at 65psi on all 6 tires with no problems. I'm trying to set up my TPMS and I'm kinda confused here and would appreciate any input
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Old 02-24-2022, 01:07 PM   #2
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Old 02-24-2022, 01:21 PM   #3
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Why not go with what Ford and Jayco stated? 110 pounds psi is the MAX for these tires.
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Old 02-24-2022, 01:31 PM   #4
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I have a trailer, not motorhome. But the best advice I could give is to weigh the front axel and both sides back when loaded and ready to roam. Goodyear suggests tire pressure to give a combination of ride, braking and longevity.

In the past I ran up my tires to max, shook cabinets open and made a mess, even cracked a cabinet. Then I weighed my rig and found that 55 psi was what I needed to carry my load, not 65 PSI on the sidewall. This was due to my purchase of slightly over capacity D tires to replace the C rated tires which were maxed out, Chinese and out of date.

In short, inflate to carry the load, to much or to little will hurt ride, efficiency, tire life and most important, emergency braking.
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Old 02-24-2022, 04:51 PM   #5
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You might want to check out the tire pressure thread on this forum . Also, I believe the 110 psi is a maximum pressure for the tire which could be installed on a vehicle with a higher gvw than yours.
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Old 02-27-2022, 03:20 PM   #6
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We have a 2018 Alante 31V, same size tires as you mentioned. We keep ours at 80psi. Higher pressures might shake out your fillings... or loosen the microwave again 😃
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Old 02-28-2022, 06:45 AM   #7
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thanks. I will be getting it weigh and adjusting pressure based on weigh
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Old 02-28-2022, 06:49 AM   #8
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Jayco and Ford really couldn't answer my question because they use different tires all the time and their label was for max pressure only under max load. I'm going to weigh it and go from there
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Old 02-28-2022, 07:54 PM   #9
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Good luck loading that much up.

If you outside winter store it, make it 110. Otherwise get weighed. Even with what we tow/carry, the 82psi is what we calculate to. See chart.
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