The problem with wheels and tyres is not so serious as long as they are monitored in terms of excessive wear and damage. Checks on tyre pressures should have been made regular, and it is necessary to ensure that the measurements are taken when temperatures are low to prevent false high measurements due to heat expansion. Underinflation may cause overheating and excessive wear whereas overinflation may cause excessive wear in the centre of the tread and reduced adhesion. Tyres are to be examined on whether they have cuts or bulges especially along the sidewalls and any objects they may have inside them should be removed as soon as possible to avoid deflation. Tyre puncture hogs should be repaired by placing the puncture on the tyre and replacing the punctured area. It is necessary to periodically clean the wheels and check them regarding the presence of rust or other damage since light alloy and steel wheels are easily damaged. The balance of individual wheels and tyre assemblies is also important to ensure that the tyres and the suspension system are not overused and the imbalance is usually detected through vibrations. Balancing of the wheels could be done when the vehicle is stationary or when it is not and it is necessary to mark the correlation between the wheel and the hub in case it is done when the vehicle is stationary. Driving style also causes a great influence on the tyre wear, sharp braking and fast cornering cause an accelerated degradation. Misalignment of front tyres can result in uneven wear, thus it should be fixed as per the manufacturer requirements. There are legal constraints on the interchangeability of tyres on a vehicle and especially on the same axle and it is better to check the local laws with regards to the compliance with the standards of fitting and using tyres.