I have never had an issue with psi . did you crash or skid out becuase your tire was at a bad psi for the terrain. Different tires have psi ratings printed on the side . different terrain with your tire psi can effect ride but its mostly personal preference. More psi will make a tire more firm and can increase istability on ruffer terrain , but can increase speed and effeciency on smoother terrain. Lower psi can soften a tire allowing it more grip on ruff terrain or soft terrain like snow mud sand . but decreases effeciency which can effect speed mostly on smooth pavement . best exaple is lowering psi in muddy terrain will make you faster but once you hit smooth tarmac you will be saggy and loss speed . its kind if simple kind of complicated if your off road to pavement 60psi to 80 psi should be fine id say .