This site is maintained by Harald Pietschmann to provide free answers for 4WD related questions and to offer free four wheel drive driving tips. The site offers free and valuable information about Mercedes-Benz M-Class & G-Class vehicles. This site is also home for free Rubicon Trail information. including free Rubicon Trail GPS tracks and waypoints Mercedes-Benz G-Class repair manuals Rubicon Trail 4x4 Jeep adventures & off-road training Baja California Adventure Tours How many snow tire chains do you need on a 4WD or AWD vehicle? How fast can you drive in 4WD or AWD? all 4WD and AWD systems on one page - easy to understand overview You got stuck with only one wheel per axle spinning? What's the difference between 4 high (4 Hi) and 4 low (4 Lo)?  contact me Copyright © 1996-2020 Harald Pietschmann. All rights reserved. Site created and all content by H.Pietschmann