Spongy Front

OK, my bad. After 9 months and thousands of miles I think I identified my issue. Buying the car, albeit used, from a MB dealer "who had checked everything out and having it inspected in my home state at another MB dealer", the other day I was curious about tire pressure. I often look at the dash readout and happily the tire pressure has remained the same as when I picked the car up. HOWEVER, I hadn't looked at the recommended tire pressures on the door jam. I have been driving all that time at 28psi. So, I raised the front to 36 and the rear to 41, cold temperatures. WOW, the car holds the road much better, doesn't have the body roll like it did and while I feel bumps and small potholes a little more, the ride is much softer than my sl550 (lowered, 20" tires, wide rims) was. I know, vehicle maintenance 101, but each vehicle is unique and I didn't do my research properly.

And today on the Interstate at 80, on the flat, middle section I could actually let go of the wheel for quite a while. Not at 28psi!