TomTom Sat Navs

Winding-road maps come in the 4.3-inch Rider 550 for motorcycles. Seven-inch GO Discover for cars and GO Expert for trucks, 6-inch Via 1625TM and Trucker 620, and 5-inch GO Comfort and GO Supreme split North America and world map coverage with traffic. Map region, screen size and truck routing separate the seven units.