FloatingPivot Posted November 9, 2019 Share Hi there How do I know what the correct tyre pressure will be for my mountainbike? I obviously have to take my weight into account but suppose that the type of terrain will also play a big role.Currently riding mostly in the Western Cape, jeep track & single track. What pressure do you guys riding here inflate your tyres to?Here is one of the best ways! https://www.schwalbe.com/de/pressureprof Link to comment Share on other sites More sharing options...
WaynejG Posted November 9, 2019 Share I lowered my pressures to 1.9 at the back and 1.75 bar in the front. Grip was back to normal so all in all I am happy again. Link to comment Share on other sites More sharing options...
xCaLaBa Posted December 18, 2020 Share I have a Titan Cypher Alloy 120 - tires are VITTORIA BARZO 29″ X 2.35 XC-TRAIL ANTHRACITE SIDEWALL. They are tubeless and it says minimum 2 bar on the sidewall. Can I go lower than this or should I stick to the minimum. I weight 73 kg's. thanks! Link to comment Share on other sites More sharing options...
ChrisF Posted December 19, 2020 Share I have a Titan Cypher Alloy 120 - tires are VITTORIA BARZO 29″ X 2.35 XC-TRAIL ANTHRACITE SIDEWALL. They are tubeless and it says minimum 2 bar on the sidewall. Can I go lower than this or should I stick to the minimum. I weight 73 kg's. thanks!Get a section of trail with some berms, rocks, humps, etc .... Ride the trail, with the tires at 2 bar ... concentrate on how the feels handle the various sections. Is it "planted" in the the corners? Is it "harsh" over the bumpy stuff ? Now lower the tire pressure by 0,2 bar, ride and FEEL for differences in the handling ... Drop another 0,2 bar and repeat ... Depending on rider weight and tire there is a magic pressure for each rider/tire combination .... On the one extreme ... our 9-year old weighs 33kg. At 2 bar the bike is bounced up by corrugations .... we lowered the pressure ... bounce ... lower the pressure .... and again, all the while checking that the tires are still firm through corners. Ended at 0,9 bar pressure. On my bikes, with Schwalby tires I had to run near 3 bar Super uncomfortable, but any lower and it would squirm in corners ... ended up throwing it away. Various tires were run at around 2 bar. Currently I run my tires at 1,8 rear and 1,6 front ... certainly the low limit, but what a sweet spot Link to comment Share on other sites More sharing options...
thinusjvrs Posted December 19, 2020 Share I’ve found this chart super helpful. I also found psi numbers easier to use than bars on my floor pump. https://www.cyclelab.com/the-ideal-mountain-bike-tyre-pressure Regards, Thinus. LazyTrailRider, DieselnDust and ChrisF 3 Link to comment Share on other sites More sharing options...
LazyTrailRider Posted December 19, 2020 Share I’ve found this chart super helpful. I also found psi numbers easier to use than bars on my floor pump. https://www.cyclelab.com/the-ideal-mountain-bike-tyre-pressure Regards, Thinus.Unlike many charts which advocate too high pressures, this one is pretty good! thinusjvrs 1 Link to comment Share on other sites More sharing options...
cadenceblur Posted December 19, 2020 Share Wow, the suggested pressures are crazy high! Pusher 1 Link to comment Share on other sites More sharing options...
TheoG Posted December 19, 2020 Share Wow, the suggested pressures are crazy high! Agree, they seem somewhat high to me also. Link to comment Share on other sites More sharing options...
Demetri Posted December 19, 2020 Share I'm 62kg and run Maxxis Ikon 2.35 front and rear on Carbon Hardtail Front - 19psiRear - 23psi and sometimes 21psi on very loose technical terrain Link to comment Share on other sites More sharing options...
TheoG Posted December 19, 2020 Share I'm 62kg and run Maxxis Ikon 2.35 front and rear on Carbon Hardtail Front - 19psiRear - 23psi and sometimes 21psi on very loose technical terrain That is 1.3, 1.4 and 1.6 bar respectively, very low, but then, you weigh almost nothing (62kg) ... Edited December 19, 2020 by Theog Link to comment Share on other sites More sharing options...
Eddy Gordo Posted December 19, 2020 Share The pressures on that chart is spot on. I actually run a little harder, but also depending on which trails. thinusjvrs, DieselnDust and T_Boss 3 Link to comment Share on other sites More sharing options...
T_Boss Posted December 19, 2020 Share That chart from cycle lab sounds about right for an average rider on an average day on average terrain. Thing with tire pressures on bikes, is it is a very dynamic thing, and because you are working with a very small volume tire essentially, tiny changes can have a huge difference - so every person needs to go an figure it out for themselves through a bit of trail and error. As a rule on trails I ran my tires a bit harder than most suggestions - but I am just barely under 110kg on a good day, and I tend to buldoze my way over and through things - So to save the rims and stop the tires from pulling off the bead I have too..... but thats for me - a more finessed rider, would be able to get away with 20% less air in the tires on a given day - and be fine thinusjvrs 1 Link to comment Share on other sites More sharing options...
Jewbacca Posted December 19, 2020 Share I have a new Butcher and Purgatory, both 2.3 grid gripton on a 120mm/120mm carbon Cypher. In winter I would run them at 1.6 to 1.7 bar, but currently now in dry, harsh, rocky washed out middle of summer I never drop the pressures below 1.8bar. 75kg I'm not a fan of dinged rims and blown out pinch flats which lead to expensive repairs and walking. I will happily take the 'penalty' of slightly harder tires to alleviate this with the current state of Cape Trails. Edited December 19, 2020 by Jewbacca ChrisF 1 Link to comment Share on other sites More sharing options...
ChrisF Posted December 19, 2020 Share I have a new Butcher and Purgatory, both 2.3 grid gripton on a 120mm/120mm carbon Cypher. In winter I would run them at 1.6 to 1.7 bar, but currently now in dry, harsh, rocky washed out middle of summer I never drop the pressures below 1.8bar. 75kg I'm not a fan of dinged rims and blown out pinch flats which lead to expensive repairs and walking. I will happily take the 'penalty' of slightly harder tires to alleviate this with the current state of Cape Trails.Just got back from a long ride ... lots of ruts and mini potholes .... May have to up my pressures for these conditions Link to comment Share on other sites More sharing options...
eala Posted December 19, 2020 Share Wow, the suggested pressures are crazy high!Agree .Even at 100kg ,i never go higher than 2Bar .Currently riding Ardent 2,4 at 1,6 front and 1,8 rear .Cyclelab,s chart says 2,1 and 2,2 .That is unnecessary hard Link to comment Share on other sites More sharing options...
cadenceblur Posted December 19, 2020 Share At 100kg I run 21psi up front and 25 rear. Specialized 2.3 Link to comment Share on other sites More sharing options...
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