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09-13-2015, 08:06 AM
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#1
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Winnebago Owner
Join Date: Mar 2012
Location: Fulltime RVer
Posts: 212
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Tire Inflation?
I have a 2000 37 foot Itasca with Kelly Springfield tires " 245/70R19.5"
What should my Air Inflation be front and back?
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09-13-2015, 08:16 AM
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#2
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Winnebago Master
Join Date: Jun 2013
Location: 5 miles south of Lakeville, Mn
Posts: 516
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OOOOOOH, you're just asking for it! Where's that popcorn Smilie?
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Jim and Carol Cooper with Oreo the Kitty
FAA ATC ret, VFW, Legion, VVA, NRA
2012 Journey 36M, Cummins 360hp, 2015 Ford Explorer Blue Ox, AF1
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09-13-2015, 08:23 AM
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#3
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Winnebago Owner
Join Date: Mar 2012
Location: Fulltime RVer
Posts: 212
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The tires don't seem to suggest what air pressure should be. I need a starting point?
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09-13-2015, 08:28 AM
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#4
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Winnie-Wise
Join Date: Aug 2009
Posts: 307
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There should be a placard on the wall next to the drivers seat . It will have recommended tire pressure for maximum axle load for the original tire size.
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[SIGPIC][/SIGPIC]
Cliff,Tallulah and Buddy ( 1999-2012 )
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09-13-2015, 08:33 AM
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#5
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Winnie-Wise
Join Date: Aug 2009
Posts: 307
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It looks like this.
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Cliff,Tallulah and Buddy ( 1999-2012 )
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09-13-2015, 08:47 AM
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#6
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Member
Join Date: Aug 2015
Posts: 1
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The tires will also have a maximum pressure at rated carrying capacity shown on the sidewall. I am not suggesting that you necessarily need maximum pressure, but you will not want to exceed it. As previously suggested, you need to find the sticker in the coach that shows the "suggested" tire pressures. That's a good starting point. For a precise determination of what tire presures will be best for your coach, you need to have it weighed on all four corners when fully loaded. In my experience, not many coach owners actually do that however. At least, go with the sticker pressure suggestions.
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09-13-2015, 08:52 AM
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#7
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Winnebago Owner
Join Date: Mar 2012
Location: Fulltime RVer
Posts: 212
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Quote:
Originally Posted by Clifftall
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Ok Plate said 70 PSI and all tires seem to be a little over that but at same level. So I am feeling like its good. Thanks for the help....
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09-14-2015, 02:33 AM
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#8
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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Quote:
Originally Posted by homeless
I have a 2000 37 foot Itasca with Kelly Springfield tires " 245/70R19.5"
What should my Air Inflation be front and back?
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I inflate my tires to 95psi@ 70 deg f.
michelins, same size as yours.
that is the pressure that Michelin recommends for the weight they are carrying.
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01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car
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09-16-2015, 04:06 PM
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#9
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Winnebago Owner
Join Date: Mar 2012
Location: Fulltime RVer
Posts: 212
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I was told over at a tire store that my tires are G rated and should be inflated to 110 psi?
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09-17-2015, 01:19 AM
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#10
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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homeless,
you need to find a weight/pressure chart and at a minimum get axle weights and go from there.
what is the maximum pressure molded into the sidewall of the tire?
you can run that pressure until you get your Moho weighed.
if you have too much pressure for your weight, the ride will be rougher than normal.
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09-17-2015, 06:30 AM
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#11
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Winnebago Owner
Join Date: Mar 2012
Location: Fulltime RVer
Posts: 212
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Quote:
Originally Posted by DAN L
homeless,
you need to find a weight/pressure chart and at a minimum get axle weights and go from there.
what is the maximum pressure molded into the sidewall of the tire?
you can run that pressure until you get your Moho weighed.
if you have too much pressure for your weight, the ride will be rougher than normal.
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I would love to find a chart. My specs seem to suggest my motorhome weights in at 20,000. And with more air it does seem to be rougher ride?
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09-17-2015, 06:58 AM
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#12
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Winnie-Wise
Join Date: Aug 2009
Posts: 307
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Here's a link that has contact info. Hopefully they can point you to a chart.
http://www.kellytires.com/en-US/company/help-center
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[SIGPIC][/SIGPIC]
Cliff,Tallulah and Buddy ( 1999-2012 )
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09-17-2015, 07:20 AM
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#13
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Winnebago Master
Join Date: Aug 2002
Location: ...hopefully on the road!
Posts: 1,653
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Quote:
Originally Posted by homeless
I was told over at a tire store that my tires are G rated and should be inflated to 110 psi?
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That is the maximum pressure that is likely in the sidewall somewhere in very small letters. Unless you are maxed out on weight at all four corners, running your tires at max pressure can cause harsh ride, flighty steering, and premature tire wear.
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Paul (KE5LXU) ...was fulltimin', now parttimin'
'03 Winnebago UA 40e TRADED OFF JUL 2023 / '17 Jeep Grand Cherokee toad
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09-19-2015, 07:49 PM
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#14
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Winnebago Camper
Join Date: Mar 2009
Posts: 27
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Max pressure is on all tires. Take your rig to A Cat scale loaded for travel and get it weighed. Then go to Michelins site and you can figure out what the proper inflation is for your weight. Then add 5 psi for side to side weight difference. Sticker on my RV placard says 100 psi, max PSI for my tires is 110. Michelin chart says I should inflate my fronts to 70 psi and the rear to 80 psi. Since I can't do 4 corner weighing I inflate the fronts to 80 pis and the rears to 90 psi.
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09-20-2015, 01:51 PM
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#15
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Winnebago Owner
Join Date: Jul 2010
Location: Palm Harbor, FL
Posts: 181
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Looks like the tires are made by Goodyear, therefore I'd probably use the Goodyear tire pressure inflation guide.
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Earl
05 Meridian, 39K, 350 CAT. '13 F-150 4X4, Blue Ox Aventa LX, Roadmaster 9160, or 2016 Spyder RT in 7x12 trailer, USAF Retired.
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