One sign that your tyres need changing is deterioration in performance such as a reduction in grip in poor weather conditions or an increase in stopping time. Tyres wear gradually which can make it difficult to identify the change, so it’s best to have them checked regularly. By law, the driver must ensure that the tread on the tyres is not worn beyond the legal minimum limit of 1.6 millimetres.
Tyre manufacturers build tread wear indicators (T.W.I) into the design of the tyres usually at the 1.6mm level. As soon as the tread wear indicator is visible, the tyre has reached the legal minimum tread depth and you should replace it as soon as possible.
There are many different reasons for tyre wear. Tyres don’t just get worn through age and use, but through emergency braking, under-inflation or over-inflation. And if your wheels are misaligned, one edge of the tyre can wear more rapidly than the other edge.
- A weekly walk around the car to check
- the tread
- for bulges
- for wear and tear
- for visible signs of damage
- Every Time you fill up with fuel, Check the tyre pressures.
Over-inflation has resulted in the central tread area being forced into contact with the road causing rapid or crown wear.
Under-inflation has caused this tyre to wear on the outer edges of the tread, leaving the central tread area far less worn. The tyre inner-liner can also degrade.
Sharp objects can cause considerable damage rendering a tyre unserviceable.
This is damage caused by an impact to the sidewall. The bulge or “egg” indicates localised casing damage.
An emergency braking manoeuvre with this tyre has caused the tyre to rapidly wear through the complete casing causing the tyre to deflate.
End of Life
This tyre has reached the legal minimum pattern depth of 1.6mm.
This tyre has been used well after reaching the legal minimum pattern depth of 1.6mm across the central ¾ of the tread, going around the complete circumference of the tyre.
Excessive wheel camber has caused sloping wear on the outer edge of the tread on one shoulder of this tyre.