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Thread: Tire pressures

  1. #1
    Active Member Baron14y's Avatar
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    Default Tire pressures

    Just put on some tire pressure monitors and took the Spyder out for a 20 mile ride, two up. Temp about 91 degrees. Front Federal Formoza AZ01's went up about 1 psi. The Arachnid on the back went up over 3 psi. Comments?

  2. #2
    Very Active Member RICZ's Avatar
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    Way back, when I was doing sport car racing, when the TP rose 10% from cold to hot, we knew we had the correct PSI.
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.

  3. #3
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    What pressure do you start off with in the Formozas? I just had mine installed today and am wondering what psi to run them at.

  4. #4
    Very Active Member CopperSpyder's Avatar
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    Quote Originally Posted by HippieSpyderChick View Post
    What pressure do you start off with in the Formozas? I just had mine installed today and am wondering what psi to run them at.
    17psi

  5. #5
    Active Member ludwig12of45's Avatar
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    I have the stock Kendas, 20 front 28 rear. Mine will rise to 22 and 31 each time here in the AZ heat.
    2016 RTL "Boris"

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  6. #6
    Active Member Baron14y's Avatar
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    I run my Federals at 20 psi front and the Arachnid on the rear at 30 psi. The fronts started at 20.3 and went to 21.4. The Arachnid went from 29.1 to 32.3.

  7. #7
    Very Active Member JayBros's Avatar
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    Tire pressure is going to increase by different amounts depending on the ambient air temperature, how long you ride, how fast you ride and what kind of riding you do, amongst other things.
    Artillery lends dignity to what would
    otherwise be a vulgar brawl.
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  8. #8
    Very Active Member BLUEKNIGHT911's Avatar
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    Quote Originally Posted by JayBros View Post
    Tire pressure is going to increase by different amounts depending on the ambient air temperature, how long you ride, how fast you ride and what kind of riding you do, amongst other things.
    …. that being said most folks have good luck with 15 to 17 psi on the fronts …. IF THEY ARE CAR TIRES ….. they are strong enough to keep the bead secure and allow the tire to perform at it's potential …. especially when the road is WET …… I was a trained accident investigator and learned a great deal about tires, in the course of my studies..... over the past 8 years I have posted a ton of stuff about the " why lower PSI's work on the Spyders ", also check for posts by Peter Aawen, He is also an Expert on tires ….. good luck …. Mike

  9. #9
    Very Active Member Chupaca's Avatar
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    Default ah...tires

    So much has come across here on tires that it does drive most to skip it all and ask straight out questions about them. This is still the best way and we always get more information. So now we have the option of driving along and seeing the tire pressure go up and down accordingly and some will no doubt adjust it as it does. For all the years prior it was never a problem....check before you ryde and enjoy the ryde worry free. You just need to find the best pressure for you and your ryding style. Check it on your gadge then turn it off till the next ryde. Less worry and distractions safer ryde...just my view...
    Gene and Ilana De Laney
    Mt. Helix, California

    ​2012 RS sm5

  10. #10
    Very Active Member JayBros's Avatar
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    Quote Originally Posted by Chupaca View Post
    ...check before you ryde and enjoy the ryde worry free...
    Right from the MSF basic course.
    Artillery lends dignity to what would
    otherwise be a vulgar brawl.
    ******************************
    Cognac 2014 RT-S

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