I'm new to biking and have a question regarding tire pressure. I started into biking by purchasing a used road bike. I inflate the tires to the recommended pressure of 110psi, but when I check the pressure two or three days later it has dropped back to the 90-95psi range. Is this normal? Could the age or wear of the tubes or tires cause a slow leak? The tires appear OK except for a few small cracks along the sidewall, I suspect from the previous owner running underinflated.
If I have to top off tire pressure every few days I definitely need to invest in a better pump!