Whether a four-wheel alignment is needed after tyre replacement depends on the actual condition of the vehicle. If only the tyres are replaced and the vehicle has been driving normally without deviation, steering wheel vibration, or uneven tyre wear, a four-wheel alignment is usually not required immediately, but wheel balancing must be performed to ensure stability when the wheels rotate at high speeds. However, if problems such as directional deviation, reduced steering precision, misaligned steering wheel, or abnormal tyre wear (e.g., one-sided wear) occur after tyre replacement, four-wheel alignment is necessary to adjust the geometric parameters of the suspension system (including caster angle, front wheel camber, etc.), thereby restoring the vehicle's straight-line driving stability and uniform tyre contact with the road. Moreover, if chassis component repairs (such as suspension or steering system) are involved during tyre replacement or the vehicle has been in a collision, four-wheel alignment becomes an essential step, as it can reduce abnormal tyre wear, improve handling safety, and lower fuel consumption. It is best to check the alignment parameters regularly every 20,000 kilometres or once a year. Professional technicians can measure the data using specialized equipment and compare it with the manufacturer's specifications to determine whether adjustments are needed.
