Road Bike Tire Psi Chart

Proper tire pressure lets your bike roll quickly ride smoothly and avoid flats narrow tires need more air pressure than wide ones.

Road bike tire psi chart. I weigh 150 and run 95 psi in the rear tire 90 in the front when i m using 28s. Emma conducts an experiment to determine the fastest tyre pressure on a rough road surface. Road tires typically require 80 to 130 psi pounds. Just look at the above chart for confirmation of that.

Rider bike lb. The amount of weight that will be exerted on the tires does play a crucial role in how much pressure you will put on a tire. Tire pressure needs will always increase with your weight. The only issue for most riders is whether their bike has sufficient clearance for wider rubber.

This point is called the contact patch where the tire is flat against the road surface. F r weight distribution 40 60 45 55 front tire width 20 23 25 28 32 37 mm inflate front to psi rear tire width 20 23 25 28 32 37 mm inflate rear to psi. You d need a tire pressure of 87 psi. She tested all the way from 119 psi 8 2 bar to 29 psi 2 bar the results were surprising.

Remember as tire size and therefore volume increase you can decrease tire pressure. For every 10 degree drop in fahrenheit temperature your tire pressure drops by 2 percent such that a drop from 80 to 50 degrees translates to a drop of 100 to 94 psi. Mm inflate to psi weight of fully dressed rider bike rider bike lb. 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.

The bigger your tires the lower the psi. On a new smooth road your best tire pressure might be 100 psi but bring it down to 90 psi for a rough road. For example on my touring bike when not loaded and just my body weight and bike weigh calculated using 32 wide tires i use 45 psi front and 70 rear but if i add 55 pounds of gear for touring i now have to raise that psi to 60 f and 90 r. Rider rather than run a 28mm tire at 70 80 psi on your set of ses ar wheels you should consider running a 30 32mm tire.

If you re riding a mountain bike instead of a road bike the tire pressure is not going to be. This is higher than most recommendations and i ve experimented with lower pressures. You weigh 242 pounds. 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.

If the bicycle and rider weigh 200 pounds each tire supports 100 pounds of weight. In drizzly or rainy weather also lower the pressure by 10 psi for improved traction.