Forum Discussion

austinjenna's avatar
austinjenna
Explorer
Apr 23, 2021

TPMS Question

I recently installed a TPMS system and was wondering what the high limit is folks used as compared to what their PSI is. So my trailer tires are at 80 PSI and noticed they went up to 89 PSI on the way home. How much of a rise is there normally in tires so I know what to be able to set the high PSI alarm on?

Thanks
  • FWC's avatar
    FWC
    Explorer
    Apr 23, 2021
    The rise in pressure is due to an increase in temperature. Much more than a 10% increase in pressure could indicate you have a problem with a sticking brake or wheel bearing, so setting the high alarm at 10 - 15% over the cool pressure would probably be wise.
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Apr 23, 2021
    The rise will depend on the ambient temperature to a certain degree (HAR).

    Personally I don't worry too much about high pressure, but probably 10-15% rise would be common. I would be more concerned with low pressure, and high temperatures. Those are better indicators of potential problems.

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