An asymmetric tread pattern has a different pattern on the inside part of the tyre compared to the outside part to help improve dry grip and water dispersal. Larger tread ribs/blocks are on the outer side of the tyre, this is to improve cornering stability and grip on dry roads by offering greater contact area. This also reduces tread squirm and heat buildup on the outside shoulder. The inboard side of the tyre will feature smaller tread blocks to aid water dispersal and improve wet grip. Specific tyre to rim mounting required - a tyre with an asymmetric tread pattern can be fitted on all four positions of a car but must be orientated correctly with regard to the inner and outer facing parts of the tyre.