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TPMS. Settings/ Parameters

Ok got the tire monitoring system and set it up. How many pounds above and below should the high and low pressures be set at?
What is considered a high temperature for the tires, on the high temp setting for the RV and the smaller towd tires
Is there a recommendation for positioning the relay at the rear with easily accessible 12v - was going to use the engine battery with an in-line fuse on the wire - was there 12 volts behind the bedroom TV (I can't remember)
Thanks
David
David & Emma Roche
Dino (Golden Doodle)
1999 U270 WTFE 36' Build # 5534
Xtreme "Lights, Stripes & Roof"
Motorcade# 18321
Dayton, Ohio
Towd: Jeep Grand Cherokee
Two Townie Electra Bikes

Life is made to enjoy, the Foretravel helps!

Re: TPMS. Settings/ Parameters

Reply #1 –
David,  Nice that you got the TPMS, but knowing the manufacturer and model could be helpful.

Re: TPMS. Settings/ Parameters

Reply #2 –
Barry it's a TST 507 on a 99 U270
David & Emma Roche
Dino (Golden Doodle)
1999 U270 WTFE 36' Build # 5534
Xtreme "Lights, Stripes & Roof"
Motorcade# 18321
Dayton, Ohio
Towd: Jeep Grand Cherokee
Two Townie Electra Bikes

Life is made to enjoy, the Foretravel helps!

Re: TPMS. Settings/ Parameters

Reply #3 –
I have the TST 507 and have it set to about 5 to 7 lbs below what I aired up the tires to. For the H rated fronts, I put them at 105 psi, which is somewhat higher than the Michelin chart recommends for our weight. At a typical morning ambient temperature for your location in a particular season, 5 to 7 lbs below an average early morning temperature works well. However, if it gets especially cold compared to your low set point (especially when traveling to a colder climate), morning temperatures can cause your pressure to be as much or more than 10 psi lower than your initial set point. When that happens, the alarm will sound when the device is turned on before a trip and receives the signal. You can silence the alarm by touching the mode button (red light still flashes) and each new tire that is picked up that is lower than the set point, the audible alarm will sound again. Yet within a few miles after starting, your tires will be in the 'zone' and the flashing red light will go away. I turn ours off when we arrive at a camp site, because I am too lazy to get in the menu system and adjust the parameters. Since any sudden loss of pressure will supposedly be reported immediately (according to the manual), you could (and I will when I get around to it!), set the low pressure warning 15 psi or so lower than what the tire is aired up to at the morning low temperatures for the area where you are traveling and avoid the nuisance alarms. As for the high temperature alarms, I think I have ours set for 140º. I can't remember seeing higher than the mid 120º's, even on days over 100º ambient. The main purpose for me is to look for unexplained changes in the temperatures, large variations in the temperatures between the duals, and any sudden changes of pressure. The alarm is just a back up. If you set the alarm thresholds low enough so that the alarm won't sound even when the temperature drops unexpectedly low, then you could leave it on all the time.
As for the 12V to the repeater, I used the ignition hot off of the aux start solenoid right off of the start button in the back. The repeater itself is mounted above the Hydraulic reservoir. When the towed isn't hooked up and in range, it is easy to remove it via two button press on the remote (I think it is mode and minus held down for about 3 seconds or so).
Don
Quote from: Irish –
Ok got the tire monitoring system and set it up. How many pounds above and below should the high and low pressures be set at?
What is considered a high temperature for the tires, on the high temp setting for the RV and the smaller towd tires
Is there a recommendation for positioning the relay at the rear with easily accessible 12v - was going to use the engine battery with an in-line fuse on the wire - was there 12 volts behind the bedroom TV (I can't remember)
Thanks
David
The selected media item is not currently available.
Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: TPMS. Settings/ Parameters

Reply #4 –
Don
Thanks, that's all I needed to finish up, I really appreciate the detailed reply, I had not thought I'd the remote start solenoid.
David
David & Emma Roche
Dino (Golden Doodle)
1999 U270 WTFE 36' Build # 5534
Xtreme "Lights, Stripes & Roof"
Motorcade# 18321
Dayton, Ohio
Towd: Jeep Grand Cherokee
Two Townie Electra Bikes

Life is made to enjoy, the Foretravel helps!

Re: TPMS. Settings/ Parameters

Reply #5 –
You're welcome David. I should mention that there are plenty of hot 12V sources back there, most of them from the house battery bank, but not many ignition hot leads. I wanted the repeater on only while the coach is running. One less parasitic draw...
Don

Quote from: "Irish" –
Don
Thanks, that's all I needed to finish up, I really appreciate the detailed reply, I had not thought I'd the remote start solenoid.
David
The selected media item is not currently available.
Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: TPMS. Settings/ Parameters

Reply #6 –
That's a good point
Thanks again
David & Emma Roche
Dino (Golden Doodle)
1999 U270 WTFE 36' Build # 5534
Xtreme "Lights, Stripes & Roof"
Motorcade# 18321
Dayton, Ohio
Towd: Jeep Grand Cherokee
Two Townie Electra Bikes

Life is made to enjoy, the Foretravel helps!

Re: TPMS. Settings/ Parameters

Reply #7 –
Quote from: Don & Tys –
You're welcome David. I should mention that there are plenty of hot 12V sources back there, most of them from the house battery bank, but not many ignition hot leads. I wanted the repeater on only while the coach is running. One less parasitic draw...
Don
Thanks for the info Don, I will move my hot wire to your location from the always hot I have now.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean
 

Re: TPMS. Settings/ Parameters

Reply #8 –
David, if you have the color monitor you may want to try it without the repeater.  Mine seems to have better range than the B/W monitor.  My TST is on almost all the time.  When I used the B/W monitor the repeater was on all the time too.  Very small loads.

Michelin says they they consider 20% under the recommended pressure for the weight to be a flat tire.  So Don's suggestion of 15 psi under your normal inflation is about right. 

Tire temps will go up as inflation goes down.  An under inflated tire will run hotter.  The most important thing the TPMS will do for you is alert you to a slow leak and to a rapid leak.

Glad you got a TPMS.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN