Recommended Tire Pressures For Your bike

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Ever since John Dunlop patented his experimental “pneumatic tire” in 1888, cyclists have lined up to buy his marvellous invention. Tires were glued on at first, then wired into place on the rim. It took the motor industry a few years to adopt Dunlop's invention, and by that time rubber tires had been thoroughly investigated on bicycles. Bigger wheels rolled better than small, and fatter tires gave a better grip on the road than skinny ones. Thick tires resisted the necessary evil of punctures, but pedaling them was hard work. All these contradictions had to be resolved by the tire companies. 

Finally a series of compromises was worked out. Racers used skinny tires with smooth treads and supple sidewalls, inflated to high pressures expressed in pounds per square inch (psi). The butcher's boy needed thick tires for puncture resistance at lower pressures and a long life carrying heavy loads. The postman's bike was somewhere in between the two extremes. And a series of myths arose, based on tire pressure.

Manufacturers printed an extremely wide range of minimum and maximum tire pressures on tire sidewalls – information which was useless to the individual cyclist, But now the old myths have been debunked over the last fifteen years, as the MTB industry took a closer look at the pressure an individual cyclist requires for the desired blend of road holding, speed and comfort.

The first legend to be demolished was the one that high-pressure skinny tires mean speed. Scientific experiments found that a rider weighing, say, 155 lbs, using 28mm tires at 60 psi would completely outperform his old-fashioned adversary from the 1980s, who lost out with 120 psi in 20mm rock-hard covers. The tire with lower pressure and larger cross section has superior comfort,

roadholding, speed and puncture resistance. These days  pro road men  are riding tires, sometimes even 30mm wide, that suit the surfaces they'll be competing on. And they do so at pressures derived from their own body weight – or the weight of cycle and rider combined.

But what's an amateur to do if he or she wants to find the optimum pressure to put into a specific tire? Go to the internet, and you'll find a wealth of easy-to-use tire pressure calculation apps. Enter your exact weight, the diameter of the tire to be used, then click on 계산하다.

You can calculate the bike tire pressure 여기.

A dainty lady of  some 110 lbs will be told to run her fat bike tires at just under 20 psi. And a 200lb bruiser will get a recommendation of 130 psi for his 23mm road tires.

Be aware that such figures require fine tuning. Use that ballpark psi figure as your starting point and experiment by using 5 psi more or less, until the process yields a pressure you like. This fine tuning process will need to be extended a further 1,5 psi from the bottom end if you're using tubeless. And hook-less tubeless tires are worth trying at up to 5psi less than what the apps calculate.