[RussBarnes]

I was surprised when I bought my used '15 GLK350, Base, with 52k miles how the front suspension let's the car dip and dive in corners. Is that normal, I have never driven another. I have done some research into swaybar bushings, with no luck. On other cars I have installed polyurethane bushings that tightened this kind of sway. I have seen ads for the links between The bars and suspension, but I don't know if swapping them cures anything ? Does anyone have any comments about improving the handling by firming this area?

Thanks for any or all changes to cure this issue?

 

[John350]

the front suspension let's the car dip and dive in corners.

That's a pretty general description, hard to get specific with a response. Mine has 80k miles and is nice and tight. I guess the first thing I'd look into is the struts, and make sure all the control arm bushings are good.

 

[RussBarnes]

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.

 

[RussBarnes]

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!

 

[Vailcoyote]

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!

35/41 is for maximum load. 33/33 is for normal load. The sticker on the front door jam only shows the max. load pressures. If you look at the sticker on the gas filler door, it shows both normal and max. load pressures. You might try the 33/33, since it does give a better ride and handles about the same.