Understand the Tread Wear Indicator - Challenger Tyres

If you are unsure if your vehicle is getting ready for some new tyres, follow these points and see if your tyres are legal and safe. Look for a marking on the side wall of the tyre which says TWI - Tread Wear Indicator - Follow this across the tyres and you will see raised indicators, if these are level, not below, the level of the tread it is a sign they are ready for replacement.

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