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I'm looking at new tyres and while examining the manual for my new wheels it says the maximum tyre pressure for these wheels is 37psi - that seems awfully low as a maximum. My current tyres have a range of 26-54 psi and the wheel has no maximum detailed in the manual.
Is that unusual?
What bike.
What size tyre.
Your weight
What riding.
Is there a tyre pressure app?
E-MTB
Haven't bought the tyre yet but possibly 29" 2.3
14st
Cycle routes around the north east - mostly disused railway line type...
Would you actually want more than 37psi in a 29 X 2.3" tyre❓
I run 40psi in my 700c X 42c slick tyres used on bumpy tracks, 19/21psi on my 27.5 X 2.35" MTB, 30-35psi in 33c cyclo-cross tyres for trail riding.
Would you actually want more than 37psi in a 29 X 2.3″ tyre
I guess not - certainly if it says not in the manual! My Ebike manual says inflate tyres as high as possible but that is for battery life obviously rather than comfort/grip etc.
Ive been running my 2.25 at 40psi but I'm guessing I should try it lower. TBH never really thought about it until I read the 37 maximum in the wheel manual. Makes sense that front and rear should be different also I suppose. Again never crossed my mind - might explain my sore butt after 60 (road) miles yesterday!
EDIT - the wheels that say this are 622 x 30C and support tyres from 2.25 to 2.5
Would you actually want more than 37psi in a 29 X 2.3″ tyre❓
For me quite possibly yes - I loathe the squirmy feeling of soft tyres but I understand rim width has a large part to play in squirm so to an extent it depends on the rim width
Edit - I could not run pressures as low as Querty does
My Ebike manual says inflate tyres as high as possible
What brand is that? Because that is terrible advice even if it’s a brand that’s all in-house like spesh or trek; and idiotic if it’s a frame only.
What brand is that? Because that is terrible advice even if it’s a brand that’s all in-house like spesh or trek; and idiotic if it’s a frame only.
Actually it's in the Bosch manual not the bike manual - it says "Rolling resistance can be minimised by correct tyre pressure. Tip: In order to maximise the range, inflate the tyres to the maximum permissible tyre pressure."
Only true on a hard smooth surface.
Rough surface will be both more comfortable and more efficient with a bit of give in the tyre.
And all surfaces in the real world have some roughness.
I think I've been running mine too high. I was always concerned about battery life but I did 60 miles yesterday, 90% of it in ECO mode and the battery was at 40% when I got back. My backside was at 0%.
The battery will also last longer if you just ride downhill. That manual was not written for mountain biking.
Go for somewhere in the region of 20-30 psi.
That's pretty normal for mountain biking.
Take a gauge and experiment a bit, find out what you like and what suits your riding style, terrain and bike.
“Rolling resistance can be minimised by correct tyre pressure. Tip: In order to maximise the range, inflate the tyres to the maximum permissible tyre pressure.”
That isn't the case off-road.
Stick your numbers in here. I'm guessing you'll come up with mid-30s rear, 30ish front (with tubes).
https://www.schwalbe.com/en/pressureprof
Can I just ask if the wheel says 622-24C does that mean the INNER rim width is 24mm? The documentation on the manufacturers website only mentions external width.
So what is the external width, usually deduct about 5mm for internal.
Never had more than 27psi in an off road tyre in the past 35 years. Gravel bike 40mm are in the mid 20's, 27.5 on the Bird 18-20 front, 20-22 rear, lower for mud higher for rocky.
I run 30psi in my front and 30-35 in the rear and people think that’s way too much so I wouldn’t worry about it for an MTB