[Closed] Tyre pressures

Last night on my Marino with a 2.5” DHF and 2.6” Slaughter I was flying along with 23psi at both ends. Rimpact in the back wheel and I weigh just over 74kgs. Loads of cornering grip, loads of speed on the trails, but a little bit loose at the back under braking on the steeper bomb hole bits in the local woods. But the the slaughter is near enough a semi slick so that’s to be expected. The only times I go lower than 23psi are in extreme slop really - normally I’m up around 25psi to make sure I don’t pinch flat when hitting faster stuff.

Edit - you have narrow Barzos on - they aren’t the grippiest tyres in the world. Perhaps put something meatier on the front - if it needs to be Vitoria to match the back perhaps a Mazza.

9/11 on 27.5 3"/2.8" rigid bike. I'm sub 60kg

The question is, how accurate is the tyre pressure gauge we are using?

After thinking about buying one for a few years, I finally added https://www.merlincycles.com/schwalbe-airmax-pro-digital-pressure-gauge-148933.html to a recent order, yet to see how readings compare to my PX floor pump.

25-26 on my sks gauge

I have one of those schwalbe pressure gauges. Apparently I'm running 16psi front and 22psi rear. These are both maxxis (DHF & DHR) 2.3 wide tyres on a 29er. I weigh 100kg and ride a hardtail.

90psi on a pair of Vittoria Open Pave’s in 25mm. Rides like a dream.

26 front, and 28 rear.

https://www.accu-gagecycling.com/collections/view-all

I’ve got one of those.

I run 27 front 30 rear on some tubeless  29” Racing Ray/Ralph 2.35s on 30mm rims based on the below calculator.

https://www.schwalbe.com/en/pressureprof

20/23 F/R on 2.8/2.6 tyres. Hard tail mind. Oodles of grip.

16 on 29er 2.4s (wheel size makes a massive difference since teh air chamber is so much bigger), with a doubledown on the back. But I weigh as much as a child.

23/25 default
24/27 with backpack/water for a day out

With Rimpacts as of last week (-3 on all the above):
20/22 default
21/24 with backpack/water for a day out

DHR front, Dissector rear, both 29" 2.4" EXO. Measured with Topeak D2. I weigh 70kg.

10 to 15psi in the front. 2.35 or 2.6

No more than 15 in the rear. 2.3 pt 2.35

Im 58kg though.

25psi front - WTB vigilante 27.5, 2.5 on 30mm internal rim.

28psi rear. Maxxis DHR 2 2.4 on 30mm internal rim.

I keep meaning to try a couple of psi lower, just never feel the need, being a very average rider!

16 in the front. 18 in the back on 29er wild enduros according to my topeak gauge. I’m 80kg in kit

Squeeze the sides.

Apple on the back, orange on the front.

Stop worrying. Go and ride.

Front: 20psi Assegai Exo+ MaxxGrip 29x2.5"
Rear: 26-28psi DHR2 Exo+ MaxxTerra 29x2.4" with a Rimpact Pro (location dependent)

I tend to run similar pressures year round, just with different tyres. Any less in the rear and I tend to pinch flat even with an insert, I weigh about 77-78kg kitted up.

Stop worrying

Who's worried? It'll take me about 14s longer than you. Worried doesn't come into it.

F - 2.5” DHF - 23psi
R - 2.3” DHR2 - 26psi

I weight 82kg and ride an Orbea Rallon.

malv173
Full Member

I keep meaning to try a couple of psi lower, just never feel the need, being a very average rider!

TBH good riders can make it work regardless, I'm not that good so I make sure my tyres are how I like them.

I run Barrio's an at 76kg 18psi on the front and 20psi rear. Barzo's are known to wash out a bit in loose/dust over hard.

I'm also on tubeless 29 x 2.25 Barzos. I use Stans Crest rims.
100mm travel hardtail. I'm 75kg.
I run 17.5psi on the front and 19 on the back.
Works well for me.
Anything higher and it feels a bit pinbally, and the front tends to wash out a little more.

80kg riding weight, Schwalbe Mary/HD on 32mm rims in Super Gravity. In the dry I usually run around 18F/21R, which is EXACTLY wat that Schwalbe calculator just spat out. Either it's good or I am!

Roughly 86kg kitted up. Tended to go 20F / 24R on my 650b bike, dropping to 18/22 in winter slop.
Same starting point on my new ish 29er but I'm still figuring that out.