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02-06-2022, 06:28 AM
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#1
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Member
National RV Owners Club
Join Date: Nov 2021
Posts: 51
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Tire pressure label
Still searching for where they’ve put the placard that is supposed to be located on my 2000 Sea Breeze that shows the manufacturer recommended tire pressures. Doesn’t seem to be in any of the logical positions. Nowhere in or on the door or door frame. Any other ideas ?
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02-06-2022, 06:43 AM
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#2
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Senior Member
Winnebago Owners Club
Join Date: Dec 2015
Location: Jacksonville, Fl
Posts: 3,546
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On a motorhome I believe the label is usually found on the wall next to the driver's seat. Often it's under whatever is curtain is there, so you may need to move that. It should be a pretty good sized (4x6 inches or larger) yellow sticker. On mine it's easily seen, but mounted low enough that it's somewhat of a pain to read.
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2013 Winnebago Sightseer 36V
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02-06-2022, 09:58 AM
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#3
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Senior Member
Join Date: Jul 2020
Location: League City, Texas
Posts: 225
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Quote:
Originally Posted by RVAJeff
Still searching for where they’ve put the placard that is supposed to be located on my 2000 Sea Breeze that shows the manufacturer recommended tire pressures. Doesn’t seem to be in any of the logical positions. Nowhere in or on the door or door frame. Any other ideas ?
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Air up the tires based on the max air pressure on the tires.
Then drive over to a Cat scale. Get the actual axle weights.
Find the load inflation tables for your tires.
Determine the tire pressures based on the inflation table. Adjust the tires to those nnumbers.
There are many posts out here on how to determine the pressure based on weights.
__________________
2003 Alpine 36 MDDS 400hp ISL
ReadyBrake tow bar
2016 Chevy Colorado
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02-06-2022, 12:42 PM
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#4
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Senior Member
National RV Owners Club
Join Date: Jul 2018
Location: Melbourne, FL
Posts: 473
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Quote:
Originally Posted by Astasoftride
Air up the tires based on the max air pressure on the tires.
Then drive over to a Cat scale. Get the actual axle weights.
Find the load inflation tables for your tires.
Determine the tire pressures based on the inflation table. Adjust the tires to those nnumbers.
There are many posts out here on how to determine the pressure based on weights.
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Good advice. I would add fill up your tanks as well before you weigh, so you'll be closer to what your max weight might be. Fully loaded, watered and gassed up we came in at 6,080 front axle, 12,920 rear axle, with both myself and wife in the front seats. So we set our tire pressures based on those weights from the Toyo charts.
BTW - our tire placard is in the overhead compartment above my driver's seat.
Al
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Ex SeaBreeze LX 8321 Owner
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02-07-2022, 12:43 AM
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#5
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,836
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In my 99 Dolphin it is on the wall in the compartment above the driver.
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1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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02-07-2022, 06:38 AM
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#6
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Member
National RV Owners Club
Join Date: Nov 2021
Posts: 51
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Weight
I do have the weight from a CAT scale near me and I have used Yokohama’s online tool for determining correct pressure given the weight of my two axles. It just doesn’t make sense to me. The max pressure of the tires I just had put on is 120, but Yokohama’s tool comes up with 80 PSI for all six tires. I know the tool is working because if I add a lot more weight into the fields than I actually have, the required pressure goes up. I don’t know sh*t about tires so maybe I’m worried about nothing lol.
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02-07-2022, 07:09 AM
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#7
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Senior Member
Winnebago Owners Club
Join Date: Dec 2015
Location: Jacksonville, Fl
Posts: 3,546
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Quote:
Originally Posted by RVAJeff
I do have the weight from a CAT scale near me and I have used Yokohama’s online tool for determining correct pressure given the weight of my two axles. It just doesn’t make sense to me. The max pressure of the tires I just had put on is 120, but Yokohama’s tool comes up with 80 PSI for all six tires. I know the tool is working because if I add a lot more weight into the fields than I actually have, the required pressure goes up. I don’t know sh*t about tires so maybe I’m worried about nothing lol.
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I think why you're worried is that you simply don't understand all that you know about this.
First - you've done the right thing, so it's OK to stop worrying.
The only thing you might want to do (if you haven't already) is add a buffer for side to side loading imbalance in your RV. It's a near sure thing that your RV is loaded slightly heavier to one side. The CAT scale shows you the weight on each axle, but it doesn't show you the weight on each tire. So to allow for a side to side imbalance many of us will add 10% to the weight on the axle and then look up that value in the tables. For instance, using totally made up numbers, the scale shows the axle is carrying 5000 pounds, which means each (front) tire is carrying 2500 pounds. Add 10% to the 5000 for 5500 and look up the PSI needed for the tire to carry 2750 pounds. That way you've got a little bit of a 'fudge factor' built for side to side imbalance that almost certainly exists.
Second - the inflation value on the sidewall of the tire is what is required to hold the maximum weight the tire is designed to carry. You're are apparently well below that maximum weight, so you can use a lesser PSI in the tire.
Using the lesser PSI gives you a somewhat smoother ride (the tire can flex some), it will likely prevent the center of the tire from wearing too soo (the tire is sitting flat on the road and doesn't have a 'hump' in the middle), and depending on your rig it may improve handling because an 'over' inflated tire has a tendency to get stuck in the grooves in the roads, and just kind of 'jitters' around on the road surface.
On my first RV the handling was really squirrelly, the darn thing just wandered all over the road. I weighed the RV, set the inflation accordingly and the RV started tracking straight and true. It had been misbehaving just because the tires were inflated to the sidewall pressure, rather than the pressure suggest by the mfg in their chart for the load of each axel on my RV.
It also made a minor, but noticeable, improvement to the ride. It still road like a truck, but a slightly smoother riding truck.
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2013 Winnebago Sightseer 36V
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02-07-2022, 07:23 AM
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#8
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Senior Member
Join Date: Mar 2019
Location: Lansing MI
Posts: 2,826
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Quote:
Originally Posted by RVAJeff
The max pressure of the tires I just had put on is 120, but Yokohama’s tool comes up with 80 PSI for all six tires.
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The answer is in your sentence above ...The MAX pressure... since you are apparently no where near maximum weight that the tire can handle you won't be anywhere near max pressure as written on the sidewall. On my pickup truck the max pressure is something like 80 psi but because I rarely have anything but myself, my wife and a couple of suitcases in my truck I only run 40 psi in the tires because that's what is called for at the weight I'm running. Don't worry be happy.
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An Old Fisherman
2017 Nexus Ghost 36DS, 2014 Ford F150 Long Bed
2007 Harley-Davidson Ultra Classic
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02-07-2022, 07:32 AM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2017
Posts: 2,464
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Quote:
Originally Posted by RVAJeff
Still searching for where they’ve put the placard that is supposed to be located on my 2000 Sea Breeze that shows the manufacturer recommended tire pressures. Doesn’t seem to be in any of the logical positions. Nowhere in or on the door or door frame. Any other ideas ?
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That label can be anywhere. On my motorhome it is on the outside wall of the motorhome inside the upper kitchen cabinet above the sink.
On a 2000 model year motorhome it may have fallen off a long time ago!
Others have guided you on ways to know the correct pressure for the tires on your motorhome.
__________________
2003 34' Georgetown on W20 Workhorse Chassis. UltraRV power mods. Doug Thorley Headers and MagnaFlow 12589 mufflers. Front Sumo Springs, Rear P32 Sumo Springs, UltraRV Track Bar.
1998 Jeep Toad.
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02-08-2022, 05:43 AM
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#10
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Member
National RV Owners Club
Join Date: Nov 2021
Posts: 51
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Really appreciate the detailed response. It helps! Thank you.
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03-29-2022, 07:52 PM
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#11
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Senior Member
National RV Owners Club Workhorse Chassis Owner RV Trip Wizard
Join Date: Jan 2022
Posts: 134
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I have tire info on tow different labels in my 2005 Sea Breeze. One is in the cabinet over the drivers side dash and the other is on the wall in the closet along the back wall of the RV. I have the 235/80R22.5 tires and the label in the coach says inflate to 85 PSI. The tires max cold PSI is 115. I went with 90 PSI all around.
__________________
Bruce & Zoe
2005 SeaBreeze LX 8360 - 2020 Jeep Rubicon
Full Timers
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03-30-2022, 02:53 AM
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#12
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Member
Join Date: Feb 2014
Posts: 91
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In response to your question about tire pressure.
Call the manufacturer - they will need the vin #.
Safe travels to you and your family
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03-30-2022, 10:40 PM
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#13
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Senior Member
Join Date: Mar 2019
Location: Arizona
Posts: 2,332
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Quote:
Originally Posted by chboone
In my 99 Dolphin it is on the wall in the compartment above the driver.
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Same with my 2004 Dolphin.
__________________
2004 National Dolphin LX 6320, W-22, 8.1, Allison 1000, Front/rear "Trac" Bars & Anti-sway Bars, Sumo Springs, Roadmaster Reflex Steering Stabilizer, 2005 PT Cruiser Toad
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03-31-2022, 11:43 AM
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#14
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Member
Join Date: Sep 2006
Location: Texas
Posts: 97
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My 2000 Seabreeze, use the four corner weight to determine tire psi. The placard is to the left of the drive seat on the outside wall though I have never used it.
__________________
2000 National Sea Breeze
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