Why Tyre Age Matters More Than Tread Depth | Swift Tyre SG

Many drivers rely on tread depth as the main indicator of tyre safety, but tyre age is often an even more critical factor. A tyre can appear perfectly usable on the surface while its internal structure has already begun to weaken over time. As tyres age, the rubber compounds slowly deteriorate due to exposure to oxygen, heat, sunlight, and everyday driving conditions. This natural ageing process causes the rubber to harden, lose flexibility, and become more prone to cracking or internal separation.

Unlike tread wear, tyre ageing is not always visible. Even tyres with deep tread can suffer from reduced grip, longer braking distances, and an increased risk of sudden failure if they are too old. This is especially common on vehicles that are driven infrequently, as lack of use does not stop the chemical breakdown of rubber materials. In fact, tyres on low mileage cars can sometimes age faster than expected due to prolonged exposure to environmental elements.

Most tyre manufacturers and safety authorities recommend replacing tyres around six years from the date of manufacture, regardless of remaining tread depth. Tyres that reach ten years of age are generally considered unsafe for regular driving. Checking the tyre manufacture date is simple by reading the DOT code on the sidewall, where the final four digits indicate the week and year the tyre was made.

By understanding why tyre age matters as much as, or more than, tread depth, drivers can make better decisions about tyre replacement. Prioritising tyre age helps improve safety, maintain proper handling, and reduce the risk of unexpected tyre failure on the road.