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

Go Back   Thor Forums > Thor Tech Forums > Motorhome Tech Topics
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 09-15-2022, 12:58 AM   #1
Senior Member
 
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 2,392
THOR #16721
(Yet another) tire inflation thread!

Opinions please. Here's the story:

I have never weighed my rig... never felt the need to as I feel I don't go crazy loading it down. Always start out with a full tank of gas, full tank of water and empty waste tanks. So... assuming I'm loaded and under the GCCC, following the information gleaned from the labels and tires in the below pics, what tire inflation would YOU go with?
Attached Thumbnails
Click image for larger version

Name:	iMarkup_20220914_204704.jpg
Views:	66
Size:	69.6 KB
ID:	39462   Click image for larger version

Name:	iMarkup_20220914_204135.jpg
Views:	61
Size:	77.5 KB
ID:	39463  

Click image for larger version

Name:	PXL_20220914_120335845.jpg
Views:	54
Size:	134.0 KB
ID:	39464   Click image for larger version

Name:	PXL_20220914_120151605.jpg
Views:	52
Size:	143.8 KB
ID:	39465  


__________________
Chateau_Nomad is offline   Reply With Quote
Old 09-15-2022, 01:38 AM   #2
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 10,168
THOR #7035
I don't know what you mean b6 "GCCC".

If you are under GVWR then 75 front and 65 rear is what I would run.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 09-15-2022, 01:52 AM   #3
Senior Member
 
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 2,392
THOR #16721
Actually I just meant CCC - cargo carrying capacity.

Your suggestion is exactly what I started with back in May... the temp was something over 80 when I aired up.

This morning I went out early and checked the TPMS indicated pressures. The temp was around 56.
Attached Thumbnails
Click image for larger version

Name:	PXL_20220914_115007711.jpg
Views:	24
Size:	78.3 KB
ID:	39466  
__________________
Chateau_Nomad is offline   Reply With Quote
Old 09-15-2022, 02:30 AM   #4
Senior Member
 
Brand: Still Looking
Model: Winnebago Travato 59G
State: Alabama
Posts: 4,576
THOR #6826
Id go weigh the rig and then check the tire manufacturers recommended pressure and follow that. If you are well under GVWR you will find that you can lower your pressures and get a better ride.
__________________
Pete'sMH is offline   Reply With Quote
Old 09-15-2022, 02:32 AM   #5
Senior Member
 
MJC62's Avatar
 
Brand: Thor Motor Coach
Model: A.C.E. 27.2
State: Indiana
Posts: 1,446
THOR #14698
Quote:
Originally Posted by Pete'sMH View Post
Id go weigh the rig and then check the tire manufacturers recommended pressure and follow that. If you are well under GVWR you will find that you can lower your pressures and get a better ride.
Agree get the rig weighed!
__________________
2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar
Roadmaster Invisibrake
MJC62 is offline   Reply With Quote
Old 09-15-2022, 04:21 AM   #6
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 2,052
THOR #11781
If you are not going to bother weighing the rig, why worry about tire pressure? Just put the chuck on the valve stem, count to 3 and call it good to go.
__________________
Lt Keefer
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings
Lt Keefer is offline   Reply With Quote
Old 09-16-2022, 06:06 PM   #7
Senior Member
 
simidrm's Avatar
 
Brand: Thor Motor Coach
Model: Tuscany 40ex
State: Ohio
Posts: 297
THOR #12726
From what I see the tires max pressure is 80psi and your tire label says 75psi and if your not overloading I would go with the label, either way it’s only 5psi
__________________
simidrm is offline   Reply With Quote
Old 09-16-2022, 06:27 PM   #8
Senior Member
 
Ottosails's Avatar
 
Brand: Thor Motor Coach
Model: SV34
State: Arizona
Posts: 225
THOR #24580
Agree with weighing the rig. It is super easy and any CAT scale will give you a good idea, not perfect but easy and convenient. Get the app, drive on and you'll have the results in no time and be on your way for $12.50. You don't even have to get out of your seat... I did ours once when unloaded and once when fully loaded for a comparison and now have a high and low baseline. Now I even know I carry about 340lbs of gear in the toad... Get er' weighed.
__________________
RV: 2021 Class C Magnitude SV34
Toad: 2015 2dr Jeep Wrangler
Motorcycles: BMW K 1600 B, Harley Davidson Heritage Softail (EVO)
Ottosails is offline   Reply With Quote
Old 09-16-2022, 08:01 PM   #9
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 10,168
THOR #7035
It's a class C rig. Weighing it probably won't allow you to reduce tire pressures from the label; but, it may confirm you are overweight' at least on the rear axle.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 09-16-2022, 10:00 PM   #10
Senior Member
 
Brand: Still Looking
Model: Winnebago Travato 59G
State: Alabama
Posts: 4,576
THOR #6826
Quote:
Originally Posted by 16ACE27 View Post
It's a class C rig. Weighing it probably won't allow you to reduce tire pressures from the label; but, it may confirm you are overweight' at least on the rear axle.

Which is pretty worth knowing - especially as your tires age.
__________________
Pete'sMH is offline   Reply With Quote
Old 09-16-2022, 10:21 PM   #11
Senior Member
 
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 2,392
THOR #16721
Great. We're taking a week trip (towing the toad too) late in October and the route takes us past a CAT scale. Good time to 'git er done'.

Question... I don't get why the rears spec 10# less than the fronts?? The rear is heavier... wouldn't more air be better, assuming close to cargo capacity? On the way to get weighed, maybe be over inflated (but within spec) than under? Is it because of the duallies?
__________________
Chateau_Nomad is offline   Reply With Quote
Old 09-17-2022, 12:55 AM   #12
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 10,168
THOR #7035
Quote:
Originally Posted by Chateau_Nomad View Post
Great. We're taking a week trip (towing the toad too) late in October and the route takes us past a CAT scale. Good time to 'git er done'.

Question... I don't get why the rears spec 10# less than the fronts?? The rear is heavier... wouldn't more air be better, assuming close to cargo capacity? On the way to get weighed, maybe be over inflated (but within spec) than under? Is it because of the duallies?
Because you have twice as many tires carrying the load.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 09-21-2022, 07:31 PM   #13
Member
 
Brand: Thor Motor Coach
Model: Outlaw 38MB
State: Florida
Posts: 34
THOR #18099
Sticker pressures are not always best!

Quote:
Originally Posted by Pete'sMH View Post
Id go weigh the rig and then check the tire manufacturers recommended pressure and follow that. If you are well under GVWR you will find that you can lower your pressures and get a better ride.
On my 2020 F53 chassis the sticker pressures made handling terrible. Lots of lane wander. I tried every other mod first and spent a lot of money and time doing them. Still not satisfied, I finally took the forum's advice and weighed, checked tire manufacturer chart and adjusted pressure accordingly. Night and day difference in handling. My rig finally drives the way it should now! The easiest and cheapest modification was the most effective. Just sayin'!
__________________
JONJON is offline   Reply With Quote
Old 09-21-2022, 07:38 PM   #14
Senior Member
 
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 2,392
THOR #16721
I put 75# in the fronts an 65# in the rear duallies. A trip in October takes us past a Cat scale... where I'll get an accurate weight (fully loaded and with toad in tow). That should give me everything I need to know.
__________________
A positive attitude makes you focus on solutions and success, rather than on setbacks or stress.
-Samy Azer, Navigating Problem-based Learning
Chateau_Nomad is offline   Reply With Quote
Old 09-21-2022, 08:39 PM   #15
Senior Member
 
widdershins's Avatar
 
Brand: Thor Motor Coach
Model: Four Winds 23U
State: Nevada
Posts: 157
THOR #27334
Sounds like your coach is very similar to ours, same axle weight ratings and same nutty PSI recommendations from Ford.

See this thread for our actual weights and discussion about inflation pressure: https://www.thorforums.com/forums/f1...sis-32292.html

Not that ours will match yours, we travel really light...
__________________
2020 Four Winds 23U.. ex rental unit
2014 Jeep Wrangler 2dr Manual Trans toad
2019 Beta 500-RRS, for when the going gets nasty
widdershins is offline   Reply With Quote
Old 09-21-2022, 10:21 PM   #16
Senior Member
 
Brand: Thor Motor Coach
Model: 25.4
State: California
Posts: 195
THOR #7440
Most RVs are max out on weight by the time you got the gas tank, LP tank and fresh water tank full plus all the food and personal stuff, I am not concerned with the ride, the higher tire pressure will allow the tires to run cooler, I run 80 psi on my tires, so many people spoiled by driving around in their Lincoln or Caddy and want the same ride with their RV, its a heavy van or truck chassis and its gonna ride like one, getting it weighed is a must, when a tire over heats and the tread peals off it usually takes out the side of the motorhome, I saw one that ripped the exhaust system off and did some major damage to the right rear, a blow out on the front can be deadly, if you are over the max of the tire rating on weight then you need to look at a different tire or start unloading some of you excess cargo
__________________
BASSMAN is offline   Reply With Quote
Old 09-21-2022, 11:42 PM   #17
Senior Member
 
widdershins's Avatar
 
Brand: Thor Motor Coach
Model: Four Winds 23U
State: Nevada
Posts: 157
THOR #27334
Quote:
Originally Posted by BASSMAN View Post
Most RVs are max out on weight by the time you got the gas tank, LP tank and fresh water tank full plus all the food and personal stuff, I am not concerned with the ride, the higher tire pressure will allow the tires to run cooler, I run 80 psi on my tires, so many people spoiled by driving around in their Lincoln or Caddy and want the same ride with their RV, its a heavy van or truck chassis and its gonna ride like one, getting it weighed is a must, when a tire over heats and the tread peals off it usually takes out the side of the motorhome, I saw one that ripped the exhaust system off and did some major damage to the right rear, a blow out on the front can be deadly, if you are over the max of the tire rating on weight then you need to look at a different tire or start unloading some of you excess cargo
Overinflating can lead to uneven wear and compromised traction. Running max PSI seems like a bad idea IMO, unless you know for a fact that the tire requires that pressure to support the actual coach weight.
__________________
2020 Four Winds 23U.. ex rental unit
2014 Jeep Wrangler 2dr Manual Trans toad
2019 Beta 500-RRS, for when the going gets nasty
widdershins is offline   Reply With Quote
Old 09-22-2022, 12:01 AM   #18
Senior Member
 
Brand: Thor Motor Coach
State: South Carolina
Posts: 585
THOR #22342
I dont know why it took so long to buy one of these. Filling tires, checking with a stick gauge... Now, just point and shoot...

Fill 1/2 lb over desired pressure, for me 82.5 psi, press the little button to release air to the correct pressure, put on the TPMS sensor.

The neighbors, saying,,, there he goes again... checking and fillin those tires again..
Attached Thumbnails
Click image for larger version

Name:	2022-09-21_20-00-10.jpg
Views:	18
Size:	161.7 KB
ID:	39529  
__________________
txc2936@yahoo.com is offline   Reply With Quote
Old 09-22-2022, 01:42 AM   #19
Senior Member
 
Brand: Thor Motor Coach
Model: 22E
State: New York
Posts: 271
THOR #12119
Quote:
Originally Posted by widdershins View Post
Sounds like your coach is very similar to ours, same axle weight ratings and same nutty PSI recommendations from Ford.

See this thread for our actual weights and discussion about inflation pressure: https://www.thorforums.com/forums/f1...sis-32292.html

Not that ours will match yours, we travel really light...
I found the same results with the Four winds 22e, The smaller class c E350 motorhomes with no slides are lighter than you think. I was fully loaded and weighed in just over 11,000 pounds. If I emptied all my gear and tanks I could easily get close to 9,500 pounds.

Though the chateau 24f that chateau nomad has also has a slide. Not sure how much that adds
__________________
bry899 is offline   Reply With Quote
Old 09-22-2022, 02:59 AM   #20
Senior Member
 
Travelin' Texans's Avatar
 
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,702
THOR #3610
These tire inflation threads are never-ending!!!!
Over inflation is bad, under inflation is bad, weigh your rv or not, everyone has a different opinion.
My suggestion would be find a pressure that handles well, tires wear well, mileage does'nt suck worse & you're happy with then use that pressure, be it the rv recommended pressures, the sidewall pressures or somewhere between. As long as the tires aren't running near flat 5-10 lbs one way or the other won't make a bit of difference. As already stated it's a truck chassis, it never was designed to nor never will ride like your car. No tire inflation PhD required!
But then next week someone will ask again about tire pressures & it'll start all over again.
__________________
Danny & Linda
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Currently RV & truckless
Replacement undetermined
Travelin' Texans is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 04:42 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2