Evening,

I got myself a new e-bike that has Kenda 42-622 (700x42C) hybrid tires that indicate Min 50 PSI, Max 80 PSI. What would you recommend to set the PSI to?

I’m 240-250 pounds and ride the bike on either street, paved rail trails, or light gravel.

Reason I’m asking is that my previous e-bike had fat tires that weight up to 70 pounds (total bike wgt) and the PSI range was much lower, so inflating these even to 50 PSI makes me a bit nervous as the bike is only 40 pounds. I assume it’s due to the difference of the diameter of the wheels but I rather check!

Thanks!

      • Eat_Your_Paisley@lemmy.worldEnglish
        2·
        5 days ago

        Give it a try while I have a hard time believing Silca recommends less the 40 psi for a 300ish pound bike and rider combination, give it a shot, it’s kinda their thing.

  • No_Maines_Land@lemmy.caEnglish
    3·
    5 days ago

    If you’re worried about it, start at 50 and work up 5 PSI at a time until you find what you like best.

  • ∟⊔⊤∦∣≶@lemmy.nzEnglish
    2·
    5 days ago

    65 PSI. But go to just below 70 because some will rush out when you take off the pump. If it’s too firm, you can easily let some out while you’re riding. Much harder to put the air back in.

    • Maudelix@lemmy.worldOPEnglish
      2·
      5 days ago

      That makes sense, even seeing that parts of the ride is Gravel 2 and well…. PA horrible maintained roads and some railroad crossings. The rest is pretty good pavement.

  • Diplomjodler@lemmy.worldEnglish
    2·
    5 days ago

    Being on the chonkier side, you should probably start on the higher end of the pressure range. You really want to avoid the tires bottoming out and hitting the rim while passing over obstacles. That often leads to punctures. Once you’ve established an upper bound you can work your way down to the kind of comfort level you like best. Less pressure means more comfort but also more rolling resistance. In short, there is no right answer. Just start with something reasonable and experiment.