Hi, I have a 2014 ML350 with average miles and I am the first owner. But ever since I had it it has swivel / roll side to side when turning or even driving normal road, just little bit. I believe it is steel spring since I don't have air suspension. I guess I am super sensitive since I get boat sick. Any suggestion how to make the ride little bit tighter? I drove the 2018 GLE and even without air suspension, the ride is tighter which is what I hope the ML350 would have. Thank you!

 

Drop the front and rear with a spring kit. I dropped the rear only and body roll was reduced.

 

Have H&R spring kit. Search site for people who did. It stiffen up the ride and lowers the car about inch. Some have just put the spring kit on the rear.

 

Thank you Peter2772000 and Isawelvis for your inputs. I will look into this. Appreciate your help!

 

If you have the 19" wheels on your ML, going to a larger diameter and wider wheel helps quite a bit as well. I went to a 21x10" AMG wheel on mine from the factory 19" wheel and the body roll was significantly reduced and the ride stiffened up slightly, not at all harsh.

 

Thank you Johnand. I searched on Tirerack for 2014 19'' and all tires are 255. I have Michelin Premier LTX and was going to go with Bridgestone Dueler H/L Alenza Plus based on the reviews of its long life and ride quality. But I don't think it solves the body roll. If you don't mind, could you share the type/spec of the tire you used please? Thank you in advance!

 

W166's came with optional 21" wheels and 295/35-21 tires. I wanted a slightly taller tire, so I went with the X166 size of 295/40-21. Tires are Pirelli Scorpion Zero A/S Plus. Again, very happy with the upgrade. Took the factory 19" wheels and installed some Pirelli Scorpion Winter tires on them for winter. Now I have a dedicated winter and summer setup. I stuck with the UHP A/S tires for summer, instead of a true max performance summer for reasonable tread wear.

 

Looks great, John. Do you know the offset on your 21x10's?

Thx Greg

 

Thanks. Yes, they are 45mm.

 

Thanks, John. GL

 

Thank you John for your inputs! Your mercedes look awesome!

 

Going to a larger wheel reduces the height of the tire sidewall. That stiffens the ride but not as much or as predictable as a spring upgrade. You can get shorter springs or stiffer springs for much less that the cost of wheels and tires, unless you need winter wheels or find a super deal somewhere. My summer car has larger summer wheels and smaller winters. I look forward to putting on the winters because the car is more comfortable on regular roads. The 5mm height difference is noticeable in an already stiffly sprung car.

%g