MTB Tyre Pressure

[Johan1983]

Hi All. How can i found the correct tyre pressure?

[Dappere]

4 minutes ago, Johan1983 said:

Hi All. How can i found the correct tyre pressure?

Use this (https://axs.sram.com/guides/tire/pressure) as a starting point, then play around by adding or releasing pressure until you find your ideal tyre pressure. 

[love2fly]

Use trial and error to see what you're comfortable with. Internal rim width makes a huge difference ie the wider your rims, the greater the volume and the lower pressures required. I can run my front Minion DH as low as 0.9 and my rear Crossmark at around 1.6(against all popular convention and what the apps say) despite weighing 107kg and I've never had a pinch flat or even a slight burp. Yes I might have a tiny bit more rolling resistance but I don't get rattled to bits. That wouldn't work in a high inertia or high G type corner where there is a lot of force involved but the open trails I ride with mild berms and sandy/stony surfaces....

I keep a spreadsheet of all my tyre and shock pressures so I know where I'm at.

[dasilvarsa]

Ballpark

1.6 Bar in front 1.9 Bar at the Rear.

With These Pressures you will not damage rims.

 

[ChrisF]

https://bikerumor.com/wolf-tooth-components-bike-tire-pressure-app-tire-inflation/

 

 

Will be good to hear what the experienced Hubbers say on this one

[splat]

On 8/18/2023 at 1:50 PM, dasilvarsa said:

Ballpark

1.6 Bar in front 1.9 Bar at the Rear.

With These Pressures you will not damage rims.

 

There are quite a few variables to factor into that thumbsuck

[MORNE]

There are a few. Notably the sram one already posted then also a Schwalbe one, and yes the Wolftooth one. They all more or less throw out the same numbers all things being entered equal. 

But the best advice anyone can give you is to get a digital pressure gauge so you can take consistent readings every time. Then go by feel. Numbers arent everything. Floor pump measurements can be out by as much as 5-10psi. I know mine was.

[peetwindhoek]

I've been using this one: https://silca.cc/en-in/pages/pro-tire-pressure-calculator. And funnily enough close to what they tested in this video:

 

[DieselnDust]

On 8/18/2023 at 1:50 PM, dasilvarsa said:

Ballpark

1.6 Bar in front 1.9 Bar at the Rear.

With These Pressures you will not damage rims.

 

That’s what I use at 70kg….

[guidodg]

70kg

1.5 and 1.1 on Epic Evo MTB with 2,35 tires 

1.8 and 1.6 on Topstone gravel 650b x 45mm

[Wannabe]

85kg

1.9 Front (Vittoria Barzo 2.25)

2.0 Rear (Vittoria Barzo 2.25)

Old Scott Spark DS

Very little technical skills, rolls over almost everything, if I get "air" it was by chance. (so, a very careful rider, picks my lines very carefully) Only dinged one rear rim on a hidden rock I saw too late, cleared it with the front wheel, rear not so lucky.

In summary, find what works for you, not everyone rides the same terrain or in the same manner.

[michaelbiker]

Already mentioned, but here's a direct link: https://www.wolftoothcomponents.com/pages/tire-pressure-calculator

It correlates quite strongly with how I have been pumping my tires on gravel and mtb.

 

Edited September 12 by michaelbiker