im running continental verticals 2.30 on my 2006 S Works enduro
and my bro is running nobby nics 2.25’s on his Stumpy pro.

what kind of PSI should we be running for XC?

set it at about 42psi front and rear at the moment

just wondered what advantages/disadvantages there are of running lower psi??

discuss………….

only if you consider pinch punctures an advantage .I always use around 40 psi for that reason.lower gets you more traction but theres a price to pay .

2.4 Nobby Nics and 2.4 Big Betties with snake skin running 25psi. Maybe 30 in the back if it’s particularly rocky.

2 bar is pretty much the absolute max i would ever run in a mtb.

start at 2 and come down is my general rule.

EDIT: i weigh 80kg and thats for all riding from XC races to weeks in the alps.

What do you weigh?

What kind of trails is he riding?

Normal tubes or DH tubes?

Rider weight is a factor
http://www.michelinbicycletire.com/michelinbicycle/index.cfm?event=airpressuremtb.view

i weight 14.5 stone and my bro is about 13stone
normal tubes
and just XC maybe some light freeride

brechfa afan coed llandgella surry hills

11psi front, 12 rear at the moment 😎

looking forward to the description of ‘light freeride’

i use 30psi both ends, but i only tip the scales at 11st

11psi front, 12 rear at the moment

Sure you haven’t got a slow puncture?

30psi both ends, running UST tubeless though.

Al is talking about his new fat bike.

For me, LUST ADvantage on a hard tail. In the peaks, rocky trails, 15 st rider. 22.5 front, 27.5 rear.

I just over 30psi front and rear, Maxxis single ply highroller and minion 2.35″, normal tubes, hardtail, 15st rider. Rarely pinchflat.

High Rollers F&R, 30-35, 90kg, Full sus, ride like a nob and never pinch flat. Get good grip without any squirming.