Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 05-03-2021, 04:51 PM   #1
Junior Member
 
Join Date: May 2021
Posts: 9
Tire pressure

I have a 2004 fleetwood terra that I just purchased. I want to get it setup properly. I figured I would go weigh it and set tire pressures accordingly. Well, the tire manufacturer does not have a weight to tire pressure chart. I called a tire dealer that sells these tires and was just told to run them at 95psi, which is max on sidewall. Is that what I should do? The tires are advanta av2000s. The previous owner just had them put on last fall. I am chasing a wandering condition and figured tire pressure was the first place to start.
Thanks!
Classay is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-03-2021, 05:05 PM   #2
Senior Member
 
Tireman9's Avatar
Commercial Member
 
Join Date: Mar 2010
Location: Akron, Ohio
Posts: 2,781
Quote:
Originally Posted by Classay View Post
I have a 2004 fleetwood terra that I just purchased. I want to get it setup properly. I figured I would go weigh it and set tire pressures accordingly. Well, the tire manufacturer does not have a weight to tire pressure chart. I called a tire dealer that sells these tires and was just told to run them at 95psi, which is max on sidewall. Is that what I should do? The tires are advanta av2000s. The previous owner just had them put on last fall. I am chasing a wandering condition and figured tire pressure was the first place to start.
Thanks!

It would help if you provided the tire Complete size and Load Range.
What is the RV GAWR shown on the Certification sticker.
It looks like the previous owner bought based on low price. Wondering where you would go to get warranty service on those tires.



As far as I know all tire companies but one (Michelin) use the same industry standard Load / Inflation tables.


The inflation in the charts is the MINIMUM needed to support the measure load. You should run 10 to 15% more inflation but would need the above info to provide anything more specific.
__________________
Retired Design & Quality Tire Eng. 40+ years experience. Recognized in the industry and in court as an expert in failed tire inspection as I have performed thousands of failed tire "autopsies".
Tireman9 is offline   Reply With Quote
Old 05-03-2021, 06:01 PM   #3
Senior Member
 
edgray's Avatar
 
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,523
Running them at max inflation rather than setting them to actual loaded weight certainly can cause the wandering problem. Get it weighed and use any brands pressure chart for the same size and load range tire.
edgray is offline   Reply With Quote
Old 05-04-2021, 06:37 AM   #4
Junior Member
 
Join Date: May 2021
Posts: 9
I’ll have to check the load rating after work tonite. The size is 225/70/19.5. The front gawr is 6000, and rear is 11,000. From what I am reading from goodyears’ site and what I assume, is that if the front has a gawr of 6000, that’s 3000 each side max which puts the pressure at 75 to 80. Depending on load range I suppose.
Classay is offline   Reply With Quote
Old 05-04-2021, 07:04 AM   #5
Senior Member
 
Sweetbriar's Avatar
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Jul 2011
Posts: 3,790
Quote:
Originally Posted by Classay View Post
I’ll have to check the load rating after work tonite. The size is 225/70/19.5. The front gawr is 6000, and rear is 11,000. From what I am reading from goodyears’ site and what I assume, is that if the front has a gawr of 6000, that’s 3000 each side max which puts the pressure at 75 to 80. Depending on load range I suppose.
If you haven't noticed you have a lot more capacity available in the tires then you do with the axles. Same as my coach but with a 7K front and 11K rear. Based on my normal loading I'm off the bottom of the pressure charts. What has worked well for me is to just run necessary pressure for the axle maximum capacity (80 psi cold) and leave the tires alone until the TPMS advises me of a problem. I'm somewhat over inflated for my normal loading but the ride comfort and performance have been acceptable.

I do check the axle weights in the spring and when heading out on the summer vacation road trip just to insure I'm not overloading an axle after the winter projects and the extra loading for a long trip.
__________________
2006 Hurricane 31D built on a 2006 Ford F53
Sweetbriar is offline   Reply With Quote
Old 05-04-2021, 07:21 AM   #6
Senior Member
 
Join Date: Jul 2017
Location: Central Coast of Oregon
Posts: 217
Quote:
Originally Posted by Classay View Post
I have a 2004 fleetwood terra that I just purchased. I want to get it setup properly. I figured I would go weigh it and set tire pressures accordingly. Well, the tire manufacturer does not have a weight to tire pressure chart. I called a tire dealer that sells these tires and was just told to run them at 95psi, which is max on sidewall. Is that what I should do? The tires are advanta av2000s. The previous owner just had them put on last fall. I am chasing a wandering condition and figured tire pressure was the first place to start.
Thanks!
When we had our 2008 Fleetwood Terra 32LX, I ran the tires at the certificate number that was next to the drivers seat. It gave the best ride and handling. I believe that was at 80 psi… if I ran the tires up to the rating on the Toyo tires, the ride was rough and the front end was all over the road.

Our steer wandering was mostly fixed with new Koni shocks, a steering stabilizer and rear track bar. It would still somewhat wandered compared to a smaller vehicle if the tire pressure was over inflated but nothing like it was before I added those items.
__________________
2013 Tiffin 40 QBH
Escape Hybrid Toad
2 electric bikes and 1 pup
ClassAboater is offline   Reply With Quote
Old 05-04-2021, 07:29 AM   #7
Senior Member
 
edgray's Avatar
 
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,523
Quote:
Originally Posted by Classay View Post
I’ll have to check the load rating after work tonite. The size is 225/70/19.5. The front gawr is 6000, and rear is 11,000. From what I am reading from goodyears’ site and what I assume, is that if the front has a gawr of 6000, that’s 3000 each side max which puts the pressure at 75 to 80. Depending on load range I suppose.


Whatever the weight /pressure charts show, you should add 5-10% of that number to the cold inflation pressure you set the tires at. That “ extra” pressure is a safety factor for times where you may add weight and shouldn’t cause excessive wandering.
edgray is offline   Reply With Quote
Old 05-04-2021, 02:13 PM   #8
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,563
Quote:
The front gawr is 6000, and rear is 11,000. From what I am reading from goodyears’ site and what I assume, is that if the front has a gawr of 6000, that’s 3000 each side max which puts the pressure at 75 to 80. Depending on load range I suppose.
The GAWR represents the max axle load (weight), but doesn't guarantee that the weight is split 50/50 between the ends, so one side might be (for example) 3300 while the other is 2700. That sort of 55%/45% split is common. Wise owners allow for unequal balance. Until you have scaled weights to prove otherwise.


A higher Load Range increases the upper end of max load & inflation, but almost never changes the recommended inflation for the lower end of the table. In other words, if you compared a LR G tire to an LRH of the same size and type, you would find identical inflations up to the top of the G-rating. The H tire would simply go to higher levels.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
Gary RVRoamer is offline   Reply With Quote
Old 05-04-2021, 02:47 PM   #9
Junior Member
 
Join Date: May 2021
Posts: 9
So my tires say 95 psi cold at 3640 pounds. So if my axle is 6000/2=3000 per side then that is clearly over inflated. I think I may try 80 in the front and see how that goes for the handling concerns. When I first bought the rv the tires were in the mid 70’s for pressure I assume from winter storage and it seemed to handle better. I’ve tried to contact everyone I can find about psi tables for this tire manufacturer with no luck. So I’m just using the good year tables roughly.
Classay is offline   Reply With Quote
Old 05-04-2021, 03:04 PM   #10
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 6,403
You don't yet know if your side to side weights are equal. @80 psi, you could be under inflated if one side weighs 3200 or more. I would not go below 85 psi till you have a valid weight for each corner. You will never get a very smooth ride from a 19.5" tire with a 70 aspect ratio.
__________________
2006 Monaco Executive 44 Denali
2013 43 QGP Allegro Bus ( SOLD )
2013 Avalanche
Crasher is offline   Reply With Quote
Old 05-04-2021, 03:04 PM   #11
Senior Member
 
Join Date: Mar 2019
Location: Lansing MI
Posts: 2,821
That sounds like a pretty good plan to me.
__________________
An Old Fisherman
2017 Nexus Ghost 36DS, 2014 Ford F150 Long Bed
2007 Harley-Davidson Ultra Classic
arcaguy is offline   Reply With Quote
Old 05-04-2021, 03:21 PM   #12
Junior Member
 
Join Date: May 2021
Posts: 9
It’s more for wander than smoothness. But ya maybe 5% for variation.
Classay is offline   Reply With Quote
Old 05-04-2021, 04:28 PM   #13
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,651
Quote:
Originally Posted by edgray View Post
Whatever the weight /pressure charts show, you should add 5-10% of that number to the cold inflation pressure you set the tires at. That “ extra” pressure is a safety factor for times where you may add weight and shouldn’t cause excessive wandering.
Tireman9 is the expert, he says 10%-15% above minimum chart numbers.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is offline   Reply With Quote
Old 05-04-2021, 04:29 PM   #14
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,651
Quote:
Originally Posted by Crasher View Post
You don't yet know if your side to side weights are equal. @80 psi, you could be under inflated if one side weighs 3200 or more. I would not go below 85 psi till you have a valid weight for each corner. You will never get a very smooth ride from a 19.5" tire with a 70 aspect ratio.
And 19.5" tires are usually on a leaf-spring chassis.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is offline   Reply With Quote
Reply

Tags
tire, tire pressure



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heated tire pressure reaching rim max pressure rating Nadge Newmar Owner's Forum 6 06-25-2019 04:41 PM
Tire Pressure Tire Pressure It's important Fordfixer1 MH-General Discussions & Problems 7 07-20-2018 07:54 AM
Low oil pressure | erratic oil pressure | inconsistant oil pressure GlennLever Cummins Engines 45 08-28-2014 08:24 AM
Air Pressure on Tag vs Tag Tire Air Pressure dmason Monaco Owner's Forum 3 07-24-2013 08:49 AM
Doran/Pressure Pro Tire Pressure Monitor. Roam America Gear and Product Discussions 19 01-04-2008 10:56 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 01:46 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.