Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-09-2021, 07:31 PM   #1
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 2,078
Tire Pressure changing

Well, I have been driving either RV's or Big Rigs for close to 40 years.. I ALWAYS check the tires at EVERY stop.. mind you, it was the "Old School " way by thumping them...

I just installed my first TST system and was concerned at first.....I set the system up and installed mid afternoon, it was mid 60's.. ALL my tires were at 115.... came out the next AM ( it was 48 out)and to my surprise they were at 109 - 111 - 110 - 109..

I was concerned at first thinking 6 lbs was too much.. I called the good folks at TST and they told me its very common, told me to check them during the same time frame, close to the same temps....

Low and Behold... all at 115 - 115 -115- -115.. I was shocked to know that there was that much change with 15 degrees . . . . .

I think I'm gonna like this TST 507

although it may be Too Much Info for me while driving ! ! !
__________________
2020 F-350
2020 3991RD with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5..
Ford truck guy is offline   Reply With Quote
Old 04-09-2021, 10:53 PM   #2
Senior Member
 
Jim & Mary's Avatar
 
Join Date: Jul 2013
Posts: 691
Joe
I've had mine for four years or so and my only complaint is first with the monochrome display and then with the color, i can't get it bright enough to see while wearing sunglasses on a bright sunny day. I would think if the truck display can be read the TST display should be as well. They included a trailer repeater when I bought the system, but haven't had to use it yet.
__________________


Jim & Mary 2013 36 RL with Titan Disc Brakes Residential Fridge Goodyear 17.5 H rated tires MORryde IS, MORryde pin box 2015 Ford F350 King Ranch DRW
Jim & Mary is offline   Reply With Quote
Old 04-09-2021, 11:21 PM   #3
Senior Member
 
mhs4771's Avatar
 
Join Date: Jan 2012
Posts: 2,594
Hey Joe, we were up in Savannah last week and the morning we left the temp was in the mid 30's and my TST was going off with low pressure. Just muted the alarm and left, within a few miles they had warmed up enough to stop the alarm.
__________________
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top
mhs4771 is online now   Reply With Quote
Old 04-10-2021, 01:32 AM   #4
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 2,078
Quote:
Originally Posted by Jim & Mary View Post
Joe
I've had mine for four years or so and my only complaint is first with the monochrome display and then with the color, i can't get it bright enough to see while wearing sunglasses on a bright sunny day. I would think if the truck display can be read the TST display should be as well. They included a trailer repeater when I bought the system, but haven't had to use it yet.
Thanks Jim, I am leaving Sunday for the first trip so we will see how easy or hard it is to see the grayscale I version I chose...
__________________
2020 F-350
2020 3991RD with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5..
Ford truck guy is offline   Reply With Quote
Old 04-10-2021, 01:34 AM   #5
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 2,078
Quote:
Originally Posted by mhs4771 View Post
Hey Joe, we were up in Savannah last week and the morning we left the temp was in the mid 30's and my TST was going off with low pressure. Just muted the alarm and left, within a few miles they had warmed up enough to stop the alarm.

Thanks Michelle,

I always knew the temps varied, just was surprised that much with that little if a temp swing... I'm excited to try it out
__________________
2020 F-350
2020 3991RD with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5..
Ford truck guy is offline   Reply With Quote
Old 04-10-2021, 02:59 AM   #6
Senior Member
 
Join Date: May 2013
Posts: 493
Wait till you see the change on a hot day.
Mark
__________________
2013 36RE, 2008 GMC 3500CC DRW
markw is offline   Reply With Quote
Old 04-10-2021, 05:53 AM   #7
Site Team
 
piper guy's Avatar
 
Join Date: Dec 2012
Posts: 1,901
Jim - if your sunglasses are polarized, that can cause viewing problems on screens.
__________________
Vaughan & Tracy 2013 RW 36RL, 2013 F350 DRW CC, 2016 Focus. MorRyde IS, MorRyde pinbox, disc brakes, Comfort Ride Hitch. "Life is to be embraced, Grab it with both arms ! "
piper guy is offline   Reply With Quote
Old 04-10-2021, 01:07 PM   #8
Senior Member
 
Join Date: Jul 2013
Posts: 348
The other thing that you may see on a hot day is that the high temp warning goes off on your left front truck tire if you come to a stop (say at a traffic light) and keep the diesel engine running. The heat from the engine seems to come out in that direction and heats up the tire! Depends on what temp you set the high temp warning at.
__________________
2013 Redwood 36RL, 2011 F-450, Sat Internet, Sat TV
almcc is offline   Reply With Quote
Old 04-10-2021, 03:24 PM   #9
Senior Member
 
travelin' texans's Avatar
 
Join Date: Sep 2012
Posts: 3,156
Quote:
Originally Posted by Jim & Mary View Post
Joe
I've had mine for four years or so and my only complaint is first with the monochrome display and then with the color, i can't get it bright enough to see while wearing sunglasses on a bright sunny day. I would think if the truck display can be read the TST display should be as well. They included a trailer repeater when I bought the system, but haven't had to use it yet.
Jim, Your sunglasses are probably Polarized, mine are also & can barely see my phone display with them in.
Joe, if you think that's shocking watch the temps while traveling in 100+ degrees on fresh black asphalt, 5 or 6 degrees is nothing.
__________________
Danny & Linda
Former '13 FB owner
Currently rvless!
travelin' texans is online now   Reply With Quote
Old 04-10-2021, 03:35 PM   #10
Junior Member
 
Join Date: Mar 2021
Posts: 5
Go to a racetrack.... Before going on-track, i air my vette down to 26 degrees. My target ‘hot’ tire pressure is 34 psi. In just 10-ish minutes I’ve achieved that type of rise in air pressure.

Each time I exit the track into the pits, I immediately check the pressure. Bleed off anything above 34 psi..

I know.... apples/oranges/totallyunrelated but was the first useless bit of info that popped into my head.
__________________
21 RW4001LK with 3 ACs * 20 Ram Dually HO with 4.10
Toys -> 15 Ariel Atom * Track prepped 17 Vette * 20 CanAm Maverick X3 195hp
MichaelA is offline   Reply With Quote
Old 04-10-2021, 04:01 PM   #11
Senior Member
 
mhs4771's Avatar
 
Join Date: Jan 2012
Posts: 2,594
I first set my TST high limit at their suggested 20%, since I'm running 125# that put it at 150, first time out in near 100 degree temps it went off as tires approached 151, so raised limit to 155 and no problems since.
__________________
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top
mhs4771 is online now   Reply With Quote
Old 04-11-2021, 01:30 AM   #12
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 2,078
Donald Wiesehan set my pressures and I hate to say this, but I am ASSUMING the HIGH is set at 138psi which is 20% of the set psi I gave him which is 115..

I somehow misplaced all the paperwork that came with, so until I find that, I won't know if he noted that info... I do know he noted 115, thats all I got

On edits.... found it! 144#- 25% is the high... 103# 10.3% is the low
__________________
2020 F-350
2020 3991RD with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5..
Ford truck guy is offline   Reply With Quote
Old 04-17-2021, 03:47 PM   #13
Site Team
 
Blenhardt's Avatar
 
Join Date: Apr 2012
Posts: 681
I too have the TST system and like it. My question is how high a pressure is too much for my Goodyear G114 tires after setting to the recommended 110psi when cold? On a hot day they will climb to a little over 130 psi??
__________________
2013 Redwood 34SK, 2017 F350 Dually
Grain Valley, Mo
Blenhardt is offline   Reply With Quote
Old 04-17-2021, 04:02 PM   #14
Senior Member
 
mhs4771's Avatar
 
Join Date: Jan 2012
Posts: 2,594
Blenhardt, double check the ratings on those tires, G614 are 110 and G114 are 125. With my previous G114s set at 125 I had to raise my high limit to 155 because on a hot day they would hit 150 and set off the alarm.
__________________
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top
mhs4771 is online now   Reply With Quote
Old 04-17-2021, 04:29 PM   #15
Senior Member
 
travelin' texans's Avatar
 
Join Date: Sep 2012
Posts: 3,156
Quote:
Originally Posted by mhs4771 View Post
Blenhardt, double check the ratings on those tires, G614 are 110 and G114 are 125. With my previous G114s set at 125 I had to raise my high limit to 155 because on a hot day they would hit 150 and set off the alarm.
I agree with both the temps & pressures. It's not unusual to see 25-30+ psi increase in pressures on a very hot day on black asphalt.
__________________
Danny & Linda
Former '13 FB owner
Currently rvless!
travelin' texans is online now   Reply With Quote
Old 04-17-2021, 05:38 PM   #16
Junior Member
 
Ozzie's Avatar
 
Join Date: May 2013
Posts: 12
FYI ... For a complete explanation of RV tire pressure and the effects of temperature and altitude changes see this link:

RECREATIONAL VEHICLE TIRE AND CARE GUIDE:

https://www.goodyearrvtires.com/pdfs...care-guide.pdf

Note: The RV tire guide does not cover the effects of the tire heating when travelling.
__________________
Ozzie
Gardnerville, NV
2013 31SL
Ozzie is offline   Reply With Quote
Old 04-18-2021, 12:36 AM   #17
Site Team
 
Blenhardt's Avatar
 
Join Date: Apr 2012
Posts: 681
Thanks for the feedback. I was wrong. I have G614's and inflate them at 110 cold. That's what I sometimes see, 25 to 30 because of heat.
__________________
2013 Redwood 34SK, 2017 F350 Dually
Grain Valley, Mo
Blenhardt is offline   Reply With Quote
Old 04-18-2021, 06:45 PM   #18
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 2,078
My first trip with the TST was a week ago... 1st half was raining and my psi’s only increased from 115 to 125....
2nd half was sunny and mid 70’s... went up to 138-140... thinking I may have to raise the upper limit if traveling in the heat this summer considering i was within 5 psi at 70 degrees
__________________
2020 F-350
2020 3991RD with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5..
Ford truck guy is offline   Reply With Quote
Reply


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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

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


All times are GMT +1. The time now is 11:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
×