It is well known that most people cannot feel to within a reasonably precise range. There are also variations for elevation and temperature. Also tyres lose air over a period of time depending on the case thickness, rim fit and other factors. Knowing what pressures work for one's riding and tyres means that they can be quickly checked before a ride and no time will be wasted during a ride wondering why the bike isn't performing as expected or stopping because of a flat that could have been avoided. Or riding like crap because there is too much pressure in the tyres (a common problem). A hand held gauge is less likely to get damaged in the long run than the gauge on a track pump and is well worth the small price.
Jan. 26, 2019, 7:57 p.m. - AndrewR
It is well known that most people cannot feel to within a reasonably precise range. There are also variations for elevation and temperature. Also tyres lose air over a period of time depending on the case thickness, rim fit and other factors. Knowing what pressures work for one's riding and tyres means that they can be quickly checked before a ride and no time will be wasted during a ride wondering why the bike isn't performing as expected or stopping because of a flat that could have been avoided. Or riding like crap because there is too much pressure in the tyres (a common problem). A hand held gauge is less likely to get damaged in the long run than the gauge on a track pump and is well worth the small price.