Author [NL] [FR] [ES] [DE] [SE] [IT] Tyre Pressure. Michelin Road Pilot 5  (Read 12045 times)

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  • Offline Diver

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    Offline Diver

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    Tyre Pressure. Michelin Road Pilot 5
    on: Apr 21, 2018, 07.51 am
    Apr 21, 2018, 07.51 am
    Having fitted these to the Trophy, I have a slight concern

    The cold pressure is 36 PSI front and 42 PSI rear, which is pretty much bog standard for most of the bikes I've had.

    After maybe 10 -15 miles, these pressures have increased to 40 at the front and 49 at the rear, which is more than I'm used to, maybe 38 - 45 on the GSA.  I'm not riding any differently to when they had the RP 4's fitted, the ambient temp is roughly the same, so I'm just wondering why the pressure is so high.

    Yesterday, it was quite warm down south ( 24 degrees C) and just normal load and riding saw the pressure go to 41 PSI at the front and 50 at the rear.  I've checked the pressure with 2 different calibrated gauges which confirm the TPMS reading.

    Any thoughts ?

  • Offline jaapvanthoff   nl

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    Offline jaapvanthoff

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #1 on: Apr 21, 2018, 09.15 am
    Apr 21, 2018, 09.15 am
    Dear Driver.

    You have a big problem!
    Michelin road 5 is not a GT tire. (GT is not sold yet in The Netherlands)
    Michelin road 4 is a GT version and suitable for the TTSE.
    The load index for MPR#5 is too low. That is it seems that the reinforcement of the side of he tire is not enough.
    This flexibility could be the reason of the temperature increment.
    I think it is dangerous and you shout have a stiff talk with your supplier.

    TTSE bleu
    ex: Dnepr, Ural, BMW's R1200RT :-))

  • Offline smash   us

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    Offline smash

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #2 on: Apr 21, 2018, 02.32 pm
    Apr 21, 2018, 02.32 pm
    My Roadtec 01's show similar pressures.  I'm using the HWM tire on the rear and the regular on the front, per Metzeler's recommendation.  Michelin only lists the PR3 front and PR4 GT front and rear for the Trophy.  Of course, the bike shipped from Triumph with Pirelli Angel ST's, which aren't an A spec tire for the rear, so it probably won't make a bit of difference. 

  • Offline Diver

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #3 on: Apr 21, 2018, 03.02 pm
    Apr 21, 2018, 03.02 pm
    The load index for the Michelin Road Pilot 5 is the same  (58 W front 75 W rear ) as the RP 4 's, so not sure if that is the issue.

  • Offline jaapvanthoff   nl

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    Offline jaapvanthoff

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #4 on: Apr 21, 2018, 04.08 pm
    Apr 21, 2018, 04.08 pm
    no, # 5 is not a GT!
    TTSE bleu
    ex: Dnepr, Ural, BMW's R1200RT :-))

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #5 on: Apr 21, 2018, 04.23 pm
    Apr 21, 2018, 04.23 pm
    Not sure if that is relevant ?  Looking at the specs, it's the right size, load and speed rating, so why should it heat up?  GT or not ? The chap at the tyre fitters is looking in to it, and awaiting Michelins comment, but that's been well over 2 weeks, and after chasing him today, he was pretty blasé  about it.

    I can't be riding round waiting for the grip to go at those pressures, but he reckons it's okay ??...


  • Offline smash   us

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #6 on: Apr 21, 2018, 04.42 pm
    Apr 21, 2018, 04.42 pm
    Call Michelin yourself and ask.

  • Offline Xsv   us

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    Offline Xsv

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    Re: Tyre Pressure. Michelin Road Pilot 5
    Reply #7 on: Apr 21, 2018, 05.48 pm
    Apr 21, 2018, 05.48 pm
    Reduce your cold pressure if you are that worried about it.  I am currently running Dunlop Roadsmart 3 on my TTSE.  On a recent road trip I saw the rear come up to 50 psi with an ambient temp of over 100 degrees. 

    Oh crap my tires are not GT :038:

    Oh well at 4000 miles they are wearing better then my previous PR4 gt’s


    I think people on this board sometimes worry more then they ride! :002:

    Ride more, worry less!

    By the way I don’t t notice my GS tire temps increasing as much either.  Then again spoked wheels and 170 lbs lighter....probably not a good comparison.

     



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