How do you perform a visual Inspection on your tyres , specify four safety checks

Visually inspect the tyre wall for cracks , slices, bulges and perforations or foreign objects eg stones or nails. Check that the Air Pressure is between 30 – 32 psi , visually the tyre would look deflated. Check that the thread depth is a minimum of 1.6mm , visually check against the bridge mark. Uneven wear on the outside or inside of the tyre wall would indicate that the tyres are out of alignment