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225 45 18 tires on (W204) fronts

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Old 05-22-2018, 08:51 AM
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Mercedes C300 sport
225 45 18 tires on (W204) fronts
Does anyone have experience with using (225 45 18) this size tire on the 2012 C300 4matic sport? The current tire 225 40 18 are really bad for NYC roads would like to add some extra rubber between the road and rim. Thanks and safe driving!
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Old 05-23-2018, 07:33 AM
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2009 MB C300 Sport 4matic
I tried 18" 225/45 Blizzaks on the my 09 C300 4Matic and they rubbed...particularly on turning/bumps.
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Old 05-23-2018, 10:24 AM
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Mercedes C300 sport
Originally Posted by gamma300C
I tried 18" 225/45 Blizzaks on the my 09 C300 4Matic and they rubbed...particularly on turning/bumps.
That sucks. What if I went to 215 45 18 would that work?
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Old 05-23-2018, 11:18 AM
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You might wanna try going with 235/40 18. It’ll give you around 1/4” more meat/height profile, and it may be enough cushion. If you go that route, you might also need to go 265/35 18, for the rears to keep the diameters close for the 4matic. I did it back when I still had my w204. Surprisingly, it actually drove better, no rubbing either. But, I am in CA and I don’t know if that would be enough profile for your NY roads.

Good luck!
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Old 05-23-2018, 11:18 AM
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2009 MB C300 Sport 4matic
Can't say for sure but the 215's are about a 1/2" less tall so they have a better change of clearing.
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Old 05-23-2018, 11:23 AM
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2009 MB C300 Sport 4matic
The 40 profiles in the 18" rim will clear...been there. I have bent rims with 40 (235/40-18) profiles in really deep potholes but at speeds above 30-35 mph.
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Old 05-23-2018, 12:04 PM
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Originally Posted by gamma300C
The 40 profiles in the 18" rim will clear...been there. I have bent rims with 40 (235/40-18) profiles in really deep potholes but at speeds above 30-35 mph.
YIKES! So, if 225/45’s rub, and 235/40 clears but still bend rims, what size ended up working for you?

Are the roads over there really that bad now? Last time i drove in NY was waaaay back in the early 90’s and I usually just took the subway. If that’s the case, it might be time to search for an SUV instead of a tire...
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Old 05-23-2018, 04:53 PM
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2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
I have 235/35/19 front and have not bent, and Wisconsin roads are crap all year.
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Old 05-23-2018, 09:39 PM
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Mercedes C300 sport
Thanks for all the comments.
I want to stay with my current 18" rims just want some extra rubber between me and the road. The stock setup every 2" hole sounds like the suspension is bottoming out.
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Old 05-24-2018, 07:00 AM
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2009 MB C300 Sport 4matic
Originally Posted by mo11


YIKES! So, if 225/45’s rub, and 235/40 clears but still bend rims, what size ended up working for you?

Are the roads over there really that bad now? Last time i drove in NY was waaaay back in the early 90’s and I usually just took the subway. If that’s the case, it might be time to search for an SUV instead of a tire...
I stayed with the 235/40-18's, replaced the one front bent rim and avoid potholes !!
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Old 05-24-2018, 09:11 AM
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I remember after I switched to 235/40’s, i was thinking it looked like I could still have gone 245/40 18. The space was there, but I didn’t need the extra height profile.

you both might need to go that size then...
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Old 06-01-2018, 11:15 AM
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Mercedes C300 sport
235 40 18 installed feel much better and no rubbing!

Black, polished AMG (custom work) with 235 40 18 Continental.
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Old 06-01-2018, 06:47 PM
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Originally Posted by Spjetrovic
235 40 18 installed feel much better and no rubbing!

Black, polished AMG (custom work) with 235 40 18 Continental.
Did you change your rear tires as well?
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Old 06-02-2018, 03:16 PM
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Mercedes C300 sport
Originally Posted by mo11


Did you change your rear tires as well?
Nope, it feel perfect.
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Old 06-03-2018, 09:55 AM
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Originally Posted by Spjetrovic
Nope, it feel perfect.
With a 4matic, for as long as your tire diameters are within 3% f/r, you should be ok.
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Old 08-24-2018, 03:09 PM
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C 300 W204 (2014)
I run 225 40 R18 in the front and 255 35 R18 in the back. Havent had any problems.
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