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Old 11-13-2018, 03:54 AM   #1
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2019 Jayco tire pressure

sticker on door frame recommended psi 80 psi on rear tires and 75 on front tires. picked it up from dealer yesterday and ride is quite harsh. plan to adj. down 5 psi at a time.any comments??
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Old 11-13-2018, 05:14 AM   #2
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sticker on door frame recommended psi 80 psi on rear tires and 75 on front tires. picked it up from dealer yesterday and ride is quite harsh. plan to adj. down 5 psi at a time.any comments??
Ideally you weigh each corner when fully loaded for travel and inflate per the tire manufacturer's load/pressure chart, usually available online at their website. Most scales can give you axle weights (not individual tire/corner weights), but that is close enough. The tire charts will list load in both a single tire and dual tire application, obviously important in our motorhome application!

Having realistic scale weghts not only can guide you for tire inflation, but also are a good tool to let you know how your "packing" worked out. You may see a need to adjust where you carry certain items to prevent overloading. Don't forget to have whatever water and passengers you may routinely want onboard since it can affect things significantly. Some of us leave home with a full freshwater tank, some with just enough to flush a few times!
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Old 11-13-2018, 06:53 AM   #3
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thanks, I have a friend who owns a sand, gravel bank with a scale. we both are retired and travel light.1 week a month from April to oct..
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Old 11-13-2018, 07:42 AM   #4
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sticker on door frame recommended psi 80 psi on rear tires and 75 on front tires. picked it up from dealer yesterday and ride is quite harsh. plan to adj. down 5 psi at a time.any comments??
What motorhome do you have? That makes a big difference
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Old 11-13-2018, 07:50 AM   #5
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sticker on door frame recommended psi 80 psi on rear tires and 75 on front tires. picked it up from dealer yesterday and ride is quite harsh. plan to adj. down 5 psi at a time.any comments??
Did you check what the actual pressure was on each tire?

Huge assumption the dealer checked... I know mine didn't, rears were all 20 lbs low.
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Old 11-13-2018, 09:21 AM   #6
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sticker on door frame recommended psi 80 psi on rear tires and 75 on front tires. picked it up from dealer yesterday and ride is quite harsh. plan to adj. down 5 psi at a time.any comments??
You've already received a few comments, and here are a few more:

As you lower the inflation pressure...
... the tire's load capacity decreases. To be safe, you'll need to measure the loads the tires are carrying.

... the tire's sidewall becomes less stiff increasing its flexing. That raises tire temps.

... the tire's sidewall is less stiff increasing its flexing. That can contribute to poor handling issues and more being 'pushed' by wind and passing trucks.

... the tire's sidewall is less stiff increasing the possibility that the sidewalls of the rear duals can come in contact, causing a sidewall blowout.

As already stated, it's a huge assumption that the dealer inflated the tires correctly. Some do, but many don't.
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Old 11-13-2018, 10:58 AM   #7
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2019 jayco 22j 25'
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