As a general rule we would suggest using the recommended tyre pressures that are attached to the vehicle, as these usually take into account the exact specification of the vehicle. They also normally provide a range of pressures to account for vehicle speed and load, so as long as you are within these limits you should have no issues. Although tyre fitters and dealers will have their own source of information it may be more generic and less frequently updated, so it is harder to determine its accuracy.

As long as the tyres are within the recommended pressures for load and speed you should not experience excessive wear or altered braking distances. An underinflated or overinflated tyre will affect these factors, which is why correct pressures are essential.