Psi For Road Bike Tires

If calculated pressure exceeds tire s rated maximum choose a wider tire.

Psi for road bike tires. Mountain tires are flatter and they need an air pressure between 30 and 50 psi. While these sizes tend to show up at road events wider tires are used for cyclocross commuting and touring. Wider tires provide a larger cross section when in contact with the road. Road bike tires typically require 80 to 130 psi mountain bike tires 30 to 50 psi kids bikes 20 to 40 psi and hybrid bike tires 50 to 70 psi.

The pressure should be 80 psi in the front and 83 psi in the rear for the tubeless tires. For a rider of 70 kgs the inner tube tires should be 90 psi in the front and 93 psi on the rear side. The rear tire has more weight over it and so it needs the higher pressure. If the bicycle and rider weigh 200 pounds each tire supports 100 pounds of weight.

The road bike tires need to run at high pressure to reduce the chances of a pinch flat puncture and rolling resistance. Proper tire pressure lets your bike roll quickly ride smoothly and avoid flats. Rolling resistance does vary slightly with tire pressure but it s not linear and it depends on the surface. If calculated pressure is below tire s safe minimum choose a narrower tire.

And of course the increased road shock will add fatigue. Mountain tires 25 to 35 psi. Road bike tires are narrowest and require between 80 and 130 psi air pressure. And hybrid tires 40 to 70 psi.

This point is called the contact patch where the tire is flat against the road surface. On smooth surfaces like the one used in the tests shown above moderately high tire pressure say 100 110 psi for a 25 mm tire actually rolls slower than either a lower pressure 80 psi or a higher pressure 130 psi. If your bike has hybrid tires you d have to maintain the air pressure between 50 to 70 psi. Most 700c road tires today are sold in either 23 or 25 mm widths.

There was a time when most riders would opt for 23c tyres on the road pump the tyre pressure up to around 110psi for every ride letting out just a little air to provide extra grip in poor weather. Tire width and compression. At full pressure the tires tend to bounce off road imperfections rather than absorb conform to them. The psi of the tire must equal the weight placed against the tire so the size of the contact patch will be the weight load divided by the air pressure approximately.

Road tires typically require 80 to 130 psi pounds per square inch. Your weight is also a factor. One trick i ll add is to run your front tire about 5 10 psi lower than your rear. Weight of fully dressed rider bike.