We have seen several cars come in for a service with what appears to be tyres in good condition, until we get the car up on the hoist. What we find is tyres that are nearly bald or even worse worn down so far the canvas or steel belts are coming out. How can this go unnoticed? The wear is on the inside of the tyre and unless you get down on the floor or have the vehicle raised on a hoist you cant see it. Usually the outside of the tyre appears to be in good roadworthy conditi