Bicycle Tire Pressure Demo
Popular misconception is to pump a bike's tires to the highest number printed on the sidewall by the manufacturer. Instead, the optimal pressure is that which yields in a 15% sidewall drop. Sidewall drop is a non-linear function of the load on the tire and its width. It can be computed based on the weight of the bike, rider, bags, and gear. It is also different between front and back, depending on the frame geometry.
With this App, you can instantly compute the optimal tire pressure from your phone or tablet wherever you may be: in your garage, on the road, at a friend's house.
Features:
* Enter weights in pounds or kilograms
* Calculate pressures in PSI or bar
* Tire widths from 19 to 60 mm; diameters of 26", 650B, and 700C; 4 of the most typical frame geometries
* Configure and save two bikes (unlimited bikes on paid version)
* Tap bike graphic to recalculate pressures
Category : Sports
Reviews (18)
road bike only
Where is the MTB tyre pressure......? 👎🏼
Good but the most important factor is the type of terrain. Low pressure will perform better on a rough road.
Fantastic app. I own several disciplines of bikes and some with specific tires. This app has helped me a great deal on determining proper pressure for the conditions and my style of riding.
Good app, but doesn't have my bike style, which is very common. Can't install the latest update. I just use it as a guide.
Latest update will not install, error 24, and resets my data each time it tries to update.
Can't install latest update.... play store giving an error code(505). I used the demo for a while then tried premium then when back. Demo was really all I needed. Though the ability to add a custom weight distribution would be good
Comically misguided numbers. Just look at the samples in the Read More section.
The app doesn't differentiate between classic road and modern racer geometries.
Isn't updating as I change the weight. S5 with Marshmallow.
257 psi? Hahaha. Need a new algorithm.
This worked fine for me. I tried different tires and geometries snd it gave sensible results. I will buy the full version.
max for contis 4000s II 120psi. app says 137 rear 87 front.
I'm a 70kg rider with 32mm touring tyres and the app recommends 35psi. That low pressure will cause serious problems and countless of flats on the road. AVOID THIS APP.
Great app. Let's me accurately determine tyres pressures for my bikes.
Never even changed numbers when I changed weight of rider. Uninstalled
For road bikes only.
Dreadful, truly dreadful. Classic road bikes often had 27" wheels, yet no option to choose. Pressures remain identical even when changing rider weight by plus or minus 30 kgs! Finally, road bikes with modern skinny tyres should NEVER have any static sidewall deformation when loaded - only balloon-type tyres, or off-road MTB tyres should include a small amount of deformation. Shockingly poor app. And potentially lethal to any rider who follows the 'recommendations' from this (cr)app.