HI.
Can you please confirm will these rims be ok?
these are the originals recommended by MB
front 8Jx18 ET45
rear 8.5Jx18 ET48

and I want to buy the ones from w212 sedan
front 8,5Jx18 ET48
rear 9Jx18 ET56
The Et in the rear is much different.I plan to add spacers if needed
Please advice can I mount these wheels (and with what tires?)

Thanks

Relative to body:

Fronts will come out by 3.4mm
Rears will go in by 1.7mm

Will fit fine as is, but spacers are a nice touch.

Suggest 245/40R18 front and 265(or 275)/35R18 rear.

Thanks for the anwser

But will these wheels not cause any bad driving at higher speeds?

If the wheels are straight and undamaged, and balanced once tires are mounted, they should be fine.

i have 18" 8.5 wide with a offset of 43 in the front and 18" 9.5 with a offset of 53 in the rear, and my car drives the same as with the factory rims.

I am about to buy an MSW 25 set of wheels for my E Coupe 2015 220CDI but the manufacturer gives for the
Front 8 x 18 Offset 48 and for the
Rear 9 x 18 Offset 45.

Does anyone has experience with similar sizes to know if they will fit without any problems?

They will fit, but you can go with lower offset, especially in the front.

I try to avoid the spacers but my only concern is the fuel tank pipe behind the wheel which is only 2-3 cm away from the rear end of the wheel.
I tried the rims without the tyre to see the fitment.