I have an isuzu truck around 3 yrs old. Negative issues: - Sore back and bum on long trips - Driving over bitumen roads with potholes/ uneven surfaces, at moderate speed, results in the truck being unstable. It feels like the car is sliding a bit out of control for a few seconds.  - Last week I was driving in heavy rain on a road in our city and proceeded to overtake at a slow speed. My truck slid for 1 to 2 seconds out of control which scared the shit out of me. A year ago the sa