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Thread: trailer maintenance - tire pressure monitor, hubs, tire change.....

  1. #21
    Senior Member gkmccready's Avatar
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    Quote Originally Posted by bellwilliam View Post
    not sure, I always just run max psi on trailer tire sidewall. is that bad ?
    Don't you have a recommended pressure on the VIN plate? My tires are 65psi max, but 50psi recommended.

  2. #22
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by Olitho View Post
    PS. All the TPMS systems seem to get really bad reviews. They get lot of complaints that they don't work. I bought this one as some people did claim it worked OK. Remember, most people just write to complain and not praise... certainly people are not going to write about how *****in' their TPMS system is and how it lowered there lap times, etc. It is just back there and works for you someday to let you know there is a problem. Some people I think did have problems with 50' distances from rear axles to driver seat. Others I think probably just did not set it up and synch it right.
    this one has a pretty good review. and you can buy a signal repeater
    Amazon.com: Hopkins 30100VA nVision Tire Pressure Monitoring System: Automotive
    Amazon.com: Hopkins 30300VA nVision Tire Pressure Monitoring System Signal Repeater: Automotive
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    BMW Master bawareca's Avatar
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    My tires are rated 1750 lbs@50 psi,so I am thinking 45 psi for 1050 lbs should be fine.I may not be correct,but I dont like any pressure over 35 psi.

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    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by gkmccready View Post
    Don't you have a recommended pressure on the VIN plate? My tires are 65psi max, but 50psi recommended.
    I don't really look at that. (one reason being trailer tires have been replaced). I always thought max psi is safer on a trailer tire ? or do I need to pull out my pyrometer ?
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    Administrator ucfbrett's Avatar
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    Everything I have read on trailer tires says always to use max pressure.

  6. #26
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by ucfbrett View Post
    Everything I have read on trailer tires says always to use max pressure.
    I am finally right for once !! everyone else is wrong in this case
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    Senior Member robburgoon's Avatar
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    Quote Originally Posted by bellwilliam View Post
    I am finally right for once !! everyone else is wrong in this case
    I go off of the tire wear. My cheap bias plys bulged at max pressure so I had to back it off to get a proper footprint. The radials don't seem to wear and just seem to work.

  8. #28
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by robburgoon View Post
    I go off of the tire wear. My cheap bias plys bulged at max pressure so I had to back it off to get a proper footprint. The radials don't seem to wear and just seem to work.
    so pyrometer ?
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  9. #29
    Senior Member robburgoon's Avatar
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    Quote Originally Posted by bellwilliam View Post
    so pyrometer ?
    Will that even work?

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    Quote Originally Posted by bellwilliam View Post
    not sure, I always just run max psi on trailer tire sidewall. is that bad ?
    Yes. Your trailer has a rating for it full capacity or fully ladden called CGVW Lets say it is 7000lbs and your tires would be E rated and list 70psi as the full inflation pressure. Same would go for a pickup truck rear wheels for example. If you run a light load then you need less air in your pickup truck rear tires or your ride is very rough. People with pickup know exactly what I'm talking about. So lets say you got loaded 5500lbs total a safe guess is 10psi per 1000lbs or 55psi. For those who run light loads and max pressures I bet you have funny wear patterns and short life on your trailer tires. Try 10psi/1000lbs and see how the tire wear is.

  11. #31
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by fatbillybob View Post
    Yes. Your trailer has a rating for it full capacity or fully ladden called CGVW Lets say it is 7000lbs and your tires would be E rated and list 70psi as the full inflation pressure. Same would go for a pickup truck rear wheels for example. If you run a light load then you need less air in your pickup truck rear tires or your ride is very rough. People with pickup know exactly what I'm talking about. So lets say you got loaded 5500lbs total a safe guess is 10psi per 1000lbs or 55psi. For those who run light loads and max pressures I bet you have funny wear patterns and short life on your trailer tires. Try 10psi/1000lbs and see how the tire wear is.
    you and Mr. Onlinetowingguide need to fight it out, and let me know what's the proper tire pressure.....

    with my trailer, it is rarely empty (may be on my way to pick up the race car). even it is, it is relatively short trip, and there is no ride issue. as I am not sitting in it.
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  12. #32
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    Quote Originally Posted by bellwilliam View Post
    so pyrometer ?
    Using a pyrometer on trailer tires is like having a 20-page thread on what motor oil to run in your track car (oh wait, we had a thread like that . . .)
    The deposed former Sheriff of trackHQ . . .

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    BMW Master bawareca's Avatar
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    What I read over the internet says nothing but the max pressure printed on the tire is recommended.Doesnt seem right to me,but what do I know...

  14. #34
    Administrator ucfbrett's Avatar
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    The bulk of my source material has been from tire manufacturers.

    Unless planned obsolescence is the point of their advising max pressures—and I doubt it is because many already recommend replacing trailer tires every three years regardless of tread wear—I am comfortable recommending max pressure.

  15. #35
    Senior Member robburgoon's Avatar
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    Quote Originally Posted by ucfbrett View Post
    The bulk of my source material has been from tire manufacturers.

    Unless fostering planned obsolescence is the point of their advising max pressures—and I doubt it is because many already recommend replacing trailer tires every three years regardless of tread wear—I am comfortable recommending max pressure.
    The tire engineers probably just say max pressure since they know those ungrateful consumer bastards won't check their tire pressures and want the tires to have the best shot at survival.

  16. #36
    Administrator ucfbrett's Avatar
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    We have met the enemy, and he is us.

  17. #37
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    Resurrecting this thread to see if anyone is trying the newer TPMS on their trailers. The folks on the RV forum like these.

    https://smile.amazon.com/Truck-Syste...T+trailer+tpms

    Or these:

    https://smile.amazon.com/Tire-Pressu...T+trailer+tpms

    Similar product with different type of sensors. Some say the flow through sensors are better but others like the caps.

    These seem to be popular as well:
    https://smile.amazon.com/EEZTire-Tir...Z+trailer+tpms
    Last edited by Red_5; 03-11-2017 at 07:57 AM.
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    Senior Member bellwilliam's Avatar
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    after another hub failure and tire failure last year, I bit the bullet and bought this. it works well. even without the repeater (which I bought). it not only reads and alarm for psi (for tires), it also reads and alarm for temperature. hub temperature supposedly affect the sensor, which indicated imminent hub failure. not sure how true that is.

    and Amazon review is great also.

    10 senders (my RV + trailer), $450
    https://www.amazon.com/EEZTire-Tire-...dp/B009BF9S4E/

    4 senders, $270
    https://www.amazon.com/EEZTire-Tire-.../dp/B009BE069Q
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    Senior Member robburgoon's Avatar
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  20. #40
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by robburgoon View Post
    Works on your trailer tires ? Wow.
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    08 M3 - Carmax warranty !!
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