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 07-16-2020, 10:58 PM   #1
Senior Member
 
Red Wolf's Avatar


 
Tiffin Owners Club
Ford Super Duty Owner
RV Trip Wizard
Join Date: Jun 2020
Location: Austin, TX
Posts: 170
Blog Entries: 2
Maximum tire pressure

Question for you tire experts... how high of a pressure is acceptable?

Today was the maiden voyage of the new to us 2011 Tiffin 32BA.

Checked the tires this morning at 8:30am and they were all around 95 lbs, so filled to recommended 100 lbs. Air temp was 82F.

On the road, at 1pm, the Texas air temp is now 100F, and Iím seeing the TPMS reporting pressures of 110-114, with tire temps at 106-108F.

Michelinís sites says for the 235/80R22.5 Gís the max pressure is 110.

Should I be worried about those pressures exceeding 110 while traveling?
__________________
2011 Allegro Open Road 32BA
2016 Jeep Wrangler Unlimited Sahara
Redwolf Journeys picture site
Red Wolf 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 07-16-2020, 11:15 PM   #2
Senior Member
 
slickest1's Avatar
 
Monaco Owners Club
Join Date: Jul 2011
Location: B.C.
Posts: 4,530
No. You always fill tires cold. The heat from driving is normal and is factored into the pressure stated on the side of the tire.
__________________
Dennis & Marcie & Captain Hook The Jack Russell,aka PUP, 1998 HR Imperial 40 ft 2017 Equinox, 2010 Ram 1500 toads RVM59
A good day on the road means a restful night at the park!
slickest1 is offline   Reply With Quote
Old 07-17-2020, 07:05 AM   #3
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 4,142
Have you weighed your MH? Do you know what the correct "Cold" pressure is for each position? If you don't start with the weight of each position and a load inflation table, it's just a guess as to what the correct pressure should be. The recommended pressure on the placard is a good starting point, but is usually higher than needed for the load. The "correct" pressure is always set on a cool morning before the tire has rolled a mile.
__________________
2013 43 QGP Allegro Bus
2013 Avalanche
CJ7 Rock Crawler
Crasher is offline   Reply With Quote
Old 07-17-2020, 07:37 AM   #4
Senior Member
 
Join Date: Aug 2017
Posts: 1,469
You always set the tire pressure cold. If your not sure of the load , set the pressure to the max on the tire to be safe. As long as the hot pressure is more than the cold pressure, you are good to go.
__________________
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 07-17-2020, 07:44 AM   #5
Community Moderator
 
Spdracr39's Avatar


 
Monaco Owners Club
Join Date: Jul 2016
Location: Cabot, Arkansas
Posts: 6,269
As long as you do not exceed the Max Cold PSI listed on the sidewall of the tire the heat generated while driving is not a factor. I see hot pressures as high as 135 occasionally and my warning is set at 140. Remember "cold" tire pressure is taken after the tire has been sitting for a few hours. The thing to watch for on your TPMS is consistency between the tire temps. If you see one tire getting way out of line with the others that is the sign of a problem.
__________________
2004 Beaver Monterey Laguna IV
Cummins ISC 350HP Allison 3000 6 speed
2020 Chevy Equinox Premier 2.0t 9 speed AWD
https://enjoying-life.net
Spdracr39 is offline   Reply With Quote
Old 07-17-2020, 08:45 AM   #6
Registered User
 
Join Date: Mar 2019
Posts: 1,336
The pressure noted on the sidewall and on the charts is the MINIMUM pressure for the stated load

Manufacturers factor in the temperature rise with heat and flex

Lower you set the tires the hotter they will get and perhaps even higher pressure
Milford 47 is offline   Reply With Quote
Old 07-17-2020, 09:24 AM   #7
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 4,142
Quote:
Originally Posted by Milford 47 View Post
The pressure noted on the sidewall and on the charts is the MINIMUM pressure for the stated load
So as not to be confused, the cold pressure on the sidewall is also the maximum "cold" pressure for the tire.
__________________
2013 43 QGP Allegro Bus
2013 Avalanche
CJ7 Rock Crawler
Crasher is offline   Reply With Quote
Old 07-17-2020, 09:35 AM   #8
Senior Member
 
Red Wolf's Avatar


 
Tiffin Owners Club
Ford Super Duty Owner
RV Trip Wizard
Join Date: Jun 2020
Location: Austin, TX
Posts: 170
Blog Entries: 2
Thanks all!

No, Iíve not weighed it yet...itís a To Do item. Iíve got the Michelin tire pressure page bookmarked.

Iíd hoped that the Flying J in Temple that we stopped to fuel at would have a scale, but didnít see it. Iíll be checking the Loves site to see if perhaps they do.
__________________
2011 Allegro Open Road 32BA
2016 Jeep Wrangler Unlimited Sahara
Redwolf Journeys picture site
Red Wolf is offline   Reply With Quote
Old 07-17-2020, 09:44 AM   #9
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 4,142
Quote:
Originally Posted by Red Wolf View Post
Thanks all!

No, Iíve not weighed it yet...itís a To Do item. Iíve got the Michelin tire pressure page bookmarked.

Iíd hoped that the Flying J in Temple that we stopped to fuel at would have a scale, but didnít see it. Iíll be checking the Loves site to see if perhaps they do.
Remember that the CAT scales will give you the axle weight, but won't tell you if the sides are equal in weight.
__________________
2013 43 QGP Allegro Bus
2013 Avalanche
CJ7 Rock Crawler
Crasher is offline   Reply With Quote
Old 07-17-2020, 10:00 AM   #10
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 42,835
The maximum cold tire pressure is what is stated on the tire sidewall.
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is offline   Reply With Quote
Old 07-17-2020, 11:47 AM   #11
Senior Member
 
Wbonsell's Avatar
 
Join Date: Sep 2014
Location: Poulsbo, WA
Posts: 677
Once you get your coach weighed you can use tire manufacture recommended pressures for your axle weight. With a 32' gas rig it seems to me the 100lb starting rate is high. I have a 36' gas rig and keep pressures at 90 all around with Toyo tires on 245x75x22.5 wheels
__________________
Bill and Debb---2010 CT Coachworks Siena 35V
1999 Jeep Cherokee Sport---Roadmaster Falcon 5250 -
1 Cavalon (Scooby) 1 Papipoo (Bella- DOB 5/06/18)
Wbonsell is offline   Reply With Quote
Old 07-17-2020, 12:06 PM   #12
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 3,162
Also, keep in mind that ALL the tires on an axle should have the same pressure. So once you get the weight per tire, and using the charts find the appropriate pressure for the highest weight on an axle, then all the tires on that axle get that pressure. In other words, the pressure for the tire with the highest weight is the pressure for all tires on that axle.
__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : https://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Old 07-17-2020, 12:31 PM   #13
Registered User
 
Join Date: Mar 2019
Posts: 1,336
Quote:
Originally Posted by Crasher View Post
So as not to be confused, the cold pressure on the sidewall is also the maximum "cold" pressure for the tire.
Kind of like the old Mini-Max grocery stores back in the 50-60-early 70's
Milford 47 is offline   Reply With Quote
Old 07-17-2020, 03:03 PM   #14
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 4,142
Quote:
Originally Posted by Milford 47 View Post
Kind of like the old Mini-Max grocery stores back in the 50-60-early 70's
Yep.
__________________
2013 43 QGP Allegro Bus
2013 Avalanche
CJ7 Rock Crawler
Crasher is offline   Reply With Quote
Reply

Tags
tire pressure



Currently Active Users Viewing This Thread: 2 (0 members and 2 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
What maximum water pressure? PORCHDOG Winnebago Industries Owner's Forum 8 03-14-2018 05:14 PM
Tire pressure maximum sfergie631 Fleetwood Owner's Forum 18 03-10-2018 06:30 AM
Maximum Water Pressure for 2006 Fleetwood Morgan trailer (FEMA) ksull2001 Travel Trailer Discussion 3 06-30-2017 11:08 PM
maximum water pressure gator67 Alpine Coach Owner's Forum 12 04-09-2006 03:50 PM


All times are GMT -6. The time now is 12:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.