FirstV8 Posted September 19, 2017 Share I pump my tyres 3.5 bar for training on the road or just a quick off road excursion on pavements pr grass parks . When i road at OR Tambo last week i could feel the front end washing away on some of the tight more sandy bends . What is the best approach to to riding off road in regards pressure ? Link to comment Share on other sites More sharing options...
Fox3 Posted September 19, 2017 Share Are you pumping MTB tyres to 3.5bar? Link to comment Share on other sites More sharing options...
Fox3 Posted September 19, 2017 Share 1.5-1.8 works well for me. I am a heavy guy. And have wide-ish wheels Link to comment Share on other sites More sharing options...
FirstV8 Posted September 19, 2017 Share Are you pumping MTB tyres to 3.5bar?Yip Link to comment Share on other sites More sharing options...
ChrisF Posted September 20, 2017 Share would also like to hear from the experienced riders .... What would be the ideal tire pressure for : - commuting / tar riding - off road Link to comment Share on other sites More sharing options...
Neill Du Toit Posted September 20, 2017 Share would also like to hear from the experienced riders .... What would be the ideal tire pressure for : - commuting / tar riding - off roadIMO tire pressures depend on rider weight, tire size, type of rider etc I'm 82kg on a hardtail and don't ride to wild in the rough stuff. Run my 650x3.0 plus tires at 1.1bar (front and back) and the 29er 2.35 tires I run 1.5bar front and 1.7bar back. This work for me. All tubeless. Link to comment Share on other sites More sharing options...
Mr lee Posted September 20, 2017 Share I pump my tyres 3.5 bar for training on the road or just a quick off road excursion on pavements pr grass parks . When i road at OR Tambo last week i could feel the front end washing away on some of the tight more sandy bends . What is the best approach to to riding off road in regards pressure ? Tubed or tubeless? What tyres are you using? Make and model? Either way you would usually run the rear lower than the front as all your weight is biased towards the rear! I am now 116Kg's and run 2.3-2.5 bar rear (2.5 on tar) and between 1.5-1.8 in front.2.2 rear width and 2.4 front. Link to comment Share on other sites More sharing options...
Mr lee Posted September 20, 2017 Share You generally want them higher for road to reduce drag and rolling resistance and lower for off-road to help with traction....same as a car BTW at 3.5 bar on tubeless you run the risk of the tyre blowing off the rim when the tyre and air inside warm up....ask me how I know this Link to comment Share on other sites More sharing options...
porqui Posted September 20, 2017 Share I think some people need to check the calibration of their pump pressure gauges.Most pumps are out and more than some are way out. Link to comment Share on other sites More sharing options...
Popit Posted September 20, 2017 Share If you are on a 29er , I would be shocked / surprised if you could tell the difference between 1.6 and 2 bar on the tar .... except for the noise of the tyres on the tar .1.6 to 1.8 max for off road , if you are in the 85ish kg range and max 2 bar for tar .Anyway , that's what works for me ... all 79kg of me . Link to comment Share on other sites More sharing options...
FirstV8 Posted September 20, 2017 Share If you are on a 29er , I would be shocked / surprised if you could tell the difference between 1.6 and 2 bar on the tar .... except for the noise of the tyres on the tar .1.6 to 1.8 max for off road , if you are in the 85ish kg range and max 2 bar for tar .Anyway , that's what works for me ... all 79kg of me . Im 110kg now and on a 29er . I love the sound of the hard tyres on tar at speed but am aware of the dangers of over inflating . Im going to reduce the pressure today as im riding off road so i want to feel the benefit . I timed last weeks laps and hope that i can top that today .Im not going to go to soft as i am worried about tyre roll . Ill go 2 bar front and 2.5 rear . Link to comment Share on other sites More sharing options...
Letum911 Posted September 20, 2017 Share All depends on the setup you run, what rims, tyres, bike also what you weigh and riding style. On my 26" I have Black Panther's, very poor sidewall, and anything under 2.6bar they roll off the rim. On my 29" hard tail (full rigid) I run Vittoria tyres at 1.8 bar front and back. If I go softer than that I tend to bottom the rim out fairly often, harder than that I rattle the plaque off my teeth. Link to comment Share on other sites More sharing options...
Prince Posted September 20, 2017 Share I run my 26' at 3.5 but it is only on tar. I weigh 67kg and had no issues so far. Link to comment Share on other sites More sharing options...
georges Posted September 20, 2017 Share Try the Stan's formula : Example:185 (lbs) / 7 = 26.43 -1 = 25.43 psi front185 (lbs) / 7 = 26.43 +2 = 28.43 psi rear If you only know you kg weight ( this must be with full gear) x 2,20462 to get to lbs. This is for tubeless and you must use an accurate gauge not a floor pump. if anyone knows of a better starting please post. Link to comment Share on other sites More sharing options...
Christofison Posted September 20, 2017 Share I'm 80kg with 2.25" tubeles tyres on 19mm rims and I run 26psi rear(1.8bar) 23psi (1.6bar) front. Link to comment Share on other sites More sharing options...
karlito Posted September 20, 2017 Share Found an interesting article:https://www.singletracks.com/blog/mtb-training/how-does-mtb-tire-pressure-affect-power-and-speed-searching-for-the-perfect-tire-pressure/ Dropping your pressure can actually make you go faster, until a certain point then it drops off. I am 90kg and run my 2.2" 29er tires at 1.6 front and 1.8 rear. Link to comment Share on other sites More sharing options...
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