From coopertire.co.uk : Discoverer STT -> Severe mud terrain tyre designed for 80% off-road use - Armor-tek³ Carcass Construction: The tyre’s heavy duty carcass is constructed of two radial polyester body plies and one angled polyester body ply to deliver 3 plies of protection against impact breaks and bruising. - Deep Buttress Lugs: The new aggressive tread design extends far down the sidewall to enhance its soft surface traction and also provide additional “bite” in rock climbing applications. - Tapered Stone Ejectors: An integral stone ejector rib extends down from the centre lugs to the buttress blocks to help prevent stones and debris from lodging between the tread elements. - Rim Flange Protector: Strategically placed in the lower side wall area, this feature helps protect the wheel and tyre from hazards in off-road driving conditions. - Full Size Range: A full range of high flotation and light truck metric sizes with outline white letters and black sidewalls fulfills the needs of the majority off-road vehicle. The favourite tyre from Turbogom.com's customers driving a TOYOTA Land Cruiser, LAND ROVER Discovery, DAIHATSU Feroza, LAND ROVER Defender.