Help with 20" tire sizes
I'm sure that I will need at least 5mm spacers in front but was wondering is 10mm spacers would work on the front since that would give et 30 offset. The 5mm spacers would give a et 35 offset.
It looks like I would have to keep the rears the way they are but was wondering whether the 275/30/20 tires with the 20x10 wheels et 42 offset will be a problem or rub.

My wheels spec. are 20"x10" offset 40 and 245/35/20 tyres.
I think rear this setup is fine, but what you say front are they too wide?
Im looking at the tire sizes that you guys used for 20 inch wheels and I'm still not sure what sizes to use for sure.
I have a 2011 E550 4 Matic sedan and I am looking for tires to go on my wheels that are 20x9 with +40 offset front and 20x10 with +42 offset rear.
I have 4 brand new Goodyear Eagle F1 in 245/30/20's that I had for spares from another wheel setup I had for a different vehicle but I am having trouble finding the matching 285/25/20 tires to go with the front tires. I know at one time someone had a few pairs for sale but they are no longer available. If anyone is interested in these tires I may sell them because it look like I should get a bit thicker side wall.
I was considering using the 235/35/20's in front and 275/30/20's rear but was concerned about rubbing in the front. Others have said this shouldn't rub so I think 235/35/20 in front should be ok. I wasn't sure about 235/35/20 for a 20x9 front wheel though. I know 245/35/20 will rub.
I'm looking to purchase tires as soon as possible so any suggestions would be appreciated. I want to make sure I get the right tires.
Thanks!
I was being told to using 235/35/20 front, and 255/35/20 to avoid rubbing issue while driving over 80mph and still get very comfort. Therefore, i have this set up, and absolute right choise...
The Best of Mercedes & AMG

I just ordering new wheels on my 4-matic, whit airmatic.
I wondering these kind packet:front comes 20*8,5 et 38 235/35/20 and rear 20*10 ET 38 275/30/20
What you guys say rear wheels? will they fit or maybe i have to look new wheels whit bigger ET..
I have a similar setup.
As the roads in my country not excellent as in Europe, I will not lower the car.
I went with
Giovanna MECCA FF, R20 8.5 ET35 rear and front.
Now I have 4 tyres Lexani 225/30 ZR20 85W XL LX-SEVEN.
The stock tyres are 245/45/R17.
My questions is that if I will change tyres, what will be my best option?
- Keep the same tyres dimensions: 225/30 front and rear.
- Change only the height from 30 to 35, to compensate for the fact I'm not lowering the car but also to give it a better look.
225/35 front and rear
- Keep the height to 30 and increase the width to 245 for front and rear.
245/30 front and rear
- change both 245/35 rear and front
- Keep the front to 225/30 and change the rear to 245/35
I would like to improve the look, protect a bit more the alloy wheels.
Thanks for the help
PS: I don't have a better picture for now, sorry.




Im running 245/35/20 on all 4. No issues in the back. Can I modify the plate to make work? Has anyone done this?
I think they will be to pushed pushed out if I add spacers.
Im running 245/35/20 on all 4. No issues in the back. Can I modify the plate to make work? Has anyone done this?
I think they will be to pushed pushed out if I add spacers.
Thanks for the reply’s gents
So I found this website (http://www.rimsntires.com/specspro.jsp) where you get a clear comparison between wheels/tyres.
If I want to stick to my stock wheels then better to install 245/30/R20 8.5inch all around.
I found this info about stock wheels in my car user book (summer tires):
E350 BlueTEC: 245/45 R17 ET48 8 inch or 8.5 inch, rear and front (My stock wheels)
E350 4MATIC: 245/40 R18 ET48 8.5 inch, rear and front
nothing changed only 1mm in height from 652mm to 653mm
E350 4MATIC: 245/40 R18 ET48 8.5 inch front and 265/35 R18 ET54 9 inch rear (Mixed size tires)
Rear
E63 AMG: 255/40 R18 ET37 9 inch front and 285/35 R18 ET52 9.5 inch rear (Mixed size tires)
Front
Rear
E63 AMG (Performance Package): 255/35 R19 ET37 9 inch front and 285/30 R19 ET52 9.5 inch rear (Mixed size tires)
Front
Rear




That is why comparing rpm of actual tires is crucial.









