• 12-20-2012
    29er Factory wheels using S-Works tire PSI???
    Hi All,

    I've finally gone tubeless on my 2011 Specialized Stumpjumper 29er sitting on factory wheels and just bought S-Works 2.2 fronts and 2.1 rear. I'm about 170-175 fully loaded riding medium to hardpack dirt and a few fluff here and there. Rarely rocky terrain but I want to be able to use all around.

    What tire pressure do you recommend Front/Rear?
  • 12-20-2012
    start at 28psi front and rear and go from there...

    a little more for rocky, soft and you could go a little less.
  • 12-21-2012
    Stan Notubes recommends:

    Rider Weight in pounds divided by 7 = x

    x - 1 = Front tire pressure in PSI
    x + 2 = Rear tire pressure in PSI

    If find the formula generally works for me...