Tyre selection

What does a tyre do? Transmits power Provides suspension Provides flotation Medium for adding ballast Protects transmission (provides some "give")	Construction variations Bias ply Radial ply Tread patterns Specialty tyres Ply or "Star" rating (load Index)
Identification markings Size Basic construction Load capacity Speed rating Air pressure	Performance factors Footprint shape Footprint area Ground pressure Rolling resistance Wheel slip Tractive efficiency

Tread patterns

TYRE CODE	TYRE SERVICE
R-1	General farming
R-1W	General farming with wet applications
R-2	Cane, rice and wet field farming
R-3	Highway, turf and orchard work
R-4	Light industrial use