Delta has been marketed in the US and Canada since the 1950s. The Delta Tourmax GFT is a good all-season tire designed for passenger cars and mini vans of all types. It will provide a quiet ride, all season traction in wet and dry road conditions and also light snow conditions. They come in T-rated, H-rated and V speed ratings. Four circumferential grooves evacuate water for wet traction while multiple notches and sipes provide the biting edges for traction on light snow. The tread compound has silica in it, which is renowned for breaking the typical performance compromise between grip and tread-life.