Mountain Biking

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gizmonicus

'Religious debate' time! Check in with your tire pressure... (self.mtb)

submitted 2 years ago by flambonkscious to c/mtb

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I'm curious what other folks are doing pressure-wise.

I'm fairly lightweight (70kg, possibly after lunch? With back pack and water, who knows? I usually carry extra tools, etc...), and run 2.6" 27.5/650b tires.

Rear is around 20psi, but it's tubeless so I generally catch it once it's slipped down to 15 or 17 after a few weeks :). I've just realized I'm not even sure what the tire is, but it's a maxxis brand, so probably actually 2.4" wide compared to most other companies - not much clearance on my Intense Recluse

My front is usually about 18psi, on a specialized 2.6" somethingorother (pretty sure it's not a butcher)

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[–] [email protected] 4 points 2 years ago* (last edited 2 years ago)

¯|_ (ツ) _/¯

[–] [email protected] 2 points 2 years ago (1 children)

idk but if you're not getting flats you're probably ok?

[–] flambonkscious 1 points 2 years ago (1 children)

... Yeah but what do you ride with??

[–] [email protected] 1 points 2 years ago (1 children)

around whatevrrs on wheel lime 30 or 40 but i'm not doing anything crazy with tricks or whatever if u r

[–] flambonkscious 1 points 2 years ago

Wow, that's some pressure!! I feel down the extra grip rabbit how, but where I ride it's lots of clay, no rock surfaces, so grip is often a big deal

[–] gizmonicus 2 points 2 years ago (1 children)

Depends. I have a few setups I run.

Trail bike (Clash 2021) 27.5x2.4":

25/f 29/r for higher consequence trails with lots of rocks and roots. I hate squirmy tires, and the suspension eats up most of the impact.
24/f 27/r for better traction for more of the daily trail ride conditions.

Jump/SS (Meta HT AM 2020) 27.5x2.8":

18/f 18/r for trails
24/f 25/r for jumps

On trails, if it's really slick, I may drop 1-2psi for better traction. Obviously, if jumps are slick, I won't ride them.

[–] flambonkscious 1 points 2 years ago (1 children)

Nice! Thanks for the complete response

What do you weigh, if you don't mind me asking?

I should really weigh my pack and tools...

[–] gizmonicus 1 points 2 years ago

With all my gear, probably 185lbs.

[–] kersploosh 2 points 2 years ago

About 35 psi on 27.5x2.2" Kenda Honey Badgers. I ride XC in an area with occasional lumpy basalt. It can be pinch flat hell with tubes. Even with tubeless I still worry about denting my rims at lower pressures.

[–] theMechanic 1 points 2 years ago

If you don't hear your rim hitting the rocks in the trail, you are probably fine going down. If you go up a lot, you can try higher pressure and see how that feels as it will lower rolling resistance.

Then find a happy medium depending on how much uphill va downhill you usually ride.

I'm about 80kg +water and found 24psi to work best for me.

[–] [email protected] 1 points 1 year ago (1 children)

i do around 30psi. i use tubes as tubeless is just hopeless on the terrain i am riding (tires develop long-ish slices after a few rides that no sealant could ever fix) due to there being sharp rock shards. tires are Continental crossking 29" 2.2. i weigh like 60 or so kg and my bike is like 20-23 (emtb)

[–] flambonkscious 2 points 1 year ago

Interesting! Such different conditions all round... Cheers!

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