Take a look at the sidewall of your tyre be it front or rear tyre. The text normally small in size. For example the front tyre writes something like this: Max. Load: 212KG (467LBS) @ 280kPa (41 PSI) Cold. Max Load meaning the max weight the front tyre can take is 212KG & the ideal tyre pressure is 41 psi when the tyre is cold.