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Old Oct 12, 2010 | 11:50 AM
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2009 C300 Sport; 1986 VW Golf GL; 2008 VW Jetta Wolfsburg; 1979 VW Beetle cabriolet; 1997 Chevy 350
New Wheels

Hey guys I just got my new wheels for my 09 C300 sport, and I need help with tire sizes. The rims are 18x8 et42 front; 18x9 et45 rear I've done research with no luck any help is appreciated.
Last edited by Bayou Benz; Oct 12, 2010 at 12:04 PM.
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Old Oct 12, 2010 | 12:01 PM
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C300 4MATIC (w204)
Originally Posted by Bayou Benz
Hey guys I just got my new wheels for my 09 C300 sport, and I need help with tire sizes. The rims are 18x8 et42 front; 18x9 et45 rear I've done research with no luck any help is appreciated. will add pics later
Fronts: 235-40-18
Rears: 265-35-18

Please check with your tire shop to verify but I am pretty sure these are the correct sizes.
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Old Oct 12, 2010 | 12:57 PM
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thanks ill look into it
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Old Oct 12, 2010 | 01:56 PM
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Originally Posted by TheDarkSide
Fronts: 235-40-18
Rears: 265-35-18

Please check with your tire shop to verify but I am pretty sure these are the correct sizes.
^+1
or you can use 275-35-18 on the rears
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Old Oct 12, 2010 | 07:28 PM
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C200 CGi
wat about for 19?
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Old Oct 12, 2010 | 08:36 PM
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I think 255 in the rear would make it look better, I have 10" rears and 255 is BARELY stretched. 265 would be the chunky look (nothing wrong with that) but again, thats on a 10". would probably look monster truck on a 9inch
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Old Oct 12, 2010 | 08:57 PM
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Originally Posted by Bayou Benz

Hey guys I just got my new wheels for my 09 C300 sport, and I need help with tire sizes. The rims are 18x8 et42 front; 18x9 et45 rear I've done research with no luck any help is appreciated.
The correct tire sizing is 225/40/18 and 255/35/18 That's what comes stock and what I am running on my 18x8s and 18x9.5s
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Old Oct 13, 2010 | 07:05 AM
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2008 C63 AMG, 2007 B170
Originally Posted by mr inkredibul
That's what comes stock and what I am running on my 18x8s and 18x9.5s
Wow, you're running 9.5 out back? What's the offset? I'm looking at getting a set that has 18x9.5 ET54 for the rears, but not sure if they will fit.
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Old Oct 13, 2010 | 07:58 AM
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54 is the offset. I'm lowered on Supersports they are actually getting mounted Friday so I'll let you know if the fenders have to be rolled but I think I should be good. What wheels are you thinking of?
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Old Oct 13, 2010 | 09:37 AM
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Merc Xentres two-tone. They are 8.5 up front, ET48. Can't get them locally, so can't try before buying.

Good luck and hope all goes well!
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Old Oct 14, 2010 | 08:00 PM
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Originally Posted by Bayou Benz

Hey guys I just got my new wheels for my 09 C300 sport, and I need help with tire sizes. The rims are 18x8 et42 front; 18x9 et45 rear I've done research with no luck any help is appreciated.
Did you get these mounted yet?
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Old Oct 14, 2010 | 11:22 PM
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Not yet going to order Yoko. S Drive this weekend 255/35,225/40.
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Old Oct 15, 2010 | 10:07 PM
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Originally Posted by Gurlfren
Wow, you're running 9.5 out back? What's the offset? I'm looking at getting a set that has 18x9.5 ET54 for the rears, but not sure if they will fit.
18 x 9.5 et 53 with 255 at the rear fit fine with no rubbing. And I'm lowered on SuperSports. However in the future I will probably use a 265/35 tire. Up close it appears to be a tiiiiny bit stretched.
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Old Oct 16, 2010 | 01:56 AM
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2008 C63 AMG, 2007 B170
Originally Posted by mr inkredibul
18 x 9.5 et 53 with 255 at the rear fit fine with no rubbing. And I'm lowered on SuperSports. However in the future I will probably use a 265/35 tire. Up close it appears to be a tiiiiny bit stretched.
Awesome, best news I've heard all week. Any pics?
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Old Oct 16, 2010 | 09:44 AM
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Originally Posted by Gurlfren
Awesome, best news I've heard all week. Any pics?
I will post some soon...I'm waiting for a good day.
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Old Nov 15, 2010 | 03:30 AM
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2008 C63 AMG, 2007 B170
Originally Posted by mr inkredibul
I will post some soon...I'm waiting for a good day.
Bump for pics!
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Old Nov 15, 2010 | 08:28 AM
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I will post close up shots after work tonight. I'm waiting on my exhaust and diffuser to come in so I can do a shoot.
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Old Nov 15, 2010 | 09:48 PM
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Sorry the weather has been horrible and I only had my blackberry on me.

Front is 18 x 8 et 45


Rear wheel fits fine under fender (18 x 9.5 et 53)
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Old Nov 16, 2010 | 05:57 AM
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2008 C63 AMG, 2007 B170
Thanks man, that works for me.
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