I'm trying to find the proper ride height or ground clearance value for a 1996 Volvo 850 Sedan. Each wheel well measurement to the ground differs and the back end appears to be sagging a bit. I'm trying to determine if new coil springs are going to make a difference ... the main reason is that we tow a 10ft camping trailer with it and the back end lowers substantially when we are hooked up. Volvo Canada didn't know the factory ride height value ... they could only tell me the hieght of the car at the centre point. Also, I checked Haynes and the Internet and all I could come up with is a possible ground clearance between 6.1 inches and 6.7 inches ... I need a more accurate number. Also, has anyone ever put in a self-leveling suspension on a Volvo 850? If so, what brand and are they available in Canada. thanks.