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. latest magazine writeup 2012 event calendar 4x4 off-road training courses Rubicon Trail expert off-road training Rubicon Trail off-road adventure trips Baja California Adventure Tours How many snow tire chains do you need on a 4WD or AWD vehicle? How fast can I drive in 4WD or AWD? all 4WD and AWD systems on one page - easy to understand overview 4WD, AWD, traction control and stability control Does your car have ESC or ESP (stability control) ? The renaissance of VCD as a safety feature You got stuck with only one wheel per axle spinning? What's the difference between 4 high (4 Hi) and 4 low (4 Lo)? Enter your search terms Submit search form   Web www.4x4abc.com www.rubicon-trail.com  contact me Copyright © 1996-2012 Harald Pietschmann. All rights reserved. Site created and all content by H.Pietschmann