Newbie Tire/wheel question
Thread Starter
Newbie
Joined: Sep 2018
Posts: 2
Likes: 0
c300
Newbie Tire/wheel question
Hello,
Looking at purchasing a 2009 C300 4matic. It does have the sport package but surprisingly has the double 7 spoke wheels which I thought were put only on the luxury models. The Tires are staggered 225/45/17 fronts and 245/40/17 rears. I am interested in getting 18" wheels all the same size. Im assuming the stock front wheels are 17x7.5 and the rears are 17x8.5. Any recommendations as for what wheel and tire size to purchase if Im doing all 4 the same? Dont want to have speedometer issues etc.
Thanks!
Looking at purchasing a 2009 C300 4matic. It does have the sport package but surprisingly has the double 7 spoke wheels which I thought were put only on the luxury models. The Tires are staggered 225/45/17 fronts and 245/40/17 rears. I am interested in getting 18" wheels all the same size. Im assuming the stock front wheels are 17x7.5 and the rears are 17x8.5. Any recommendations as for what wheel and tire size to purchase if Im doing all 4 the same? Dont want to have speedometer issues etc.
Thanks!
MBWorld Fanatic!
Joined: Jun 2011
Posts: 2,366
Likes: 251
From: Canada
A car
Hello,
Looking at purchasing a 2009 C300 4matic. It does have the sport package but surprisingly has the double 7 spoke wheels which I thought were put only on the luxury models. The Tires are staggered 225/45/17 fronts and 245/40/17 rears. I am interested in getting 18" wheels all the same size. Im assuming the stock front wheels are 17x7.5 and the rears are 17x8.5. Any recommendations as for what wheel and tire size to purchase if Im doing all 4 the same? Dont want to have speedometer issues etc.
Thanks!
Looking at purchasing a 2009 C300 4matic. It does have the sport package but surprisingly has the double 7 spoke wheels which I thought were put only on the luxury models. The Tires are staggered 225/45/17 fronts and 245/40/17 rears. I am interested in getting 18" wheels all the same size. Im assuming the stock front wheels are 17x7.5 and the rears are 17x8.5. Any recommendations as for what wheel and tire size to purchase if Im doing all 4 the same? Dont want to have speedometer issues etc.
Thanks!
Super Member
Joined: Apr 2013
Posts: 909
Likes: 64
2007 cls550
Remove wheel and look at part number on inside. This will get you 100% confirmation of offset and width.
Tape a a piece of string to car above wheels and visualize the offset that you would want new wheels to be. Don’t have them extend past the fender of course but you will be amazed how much room you have. Measure from tire to string in mm.
The outside diameter of the tire would affect speedometer. Just keep them close to each other like your current tires do.
Tape a a piece of string to car above wheels and visualize the offset that you would want new wheels to be. Don’t have them extend past the fender of course but you will be amazed how much room you have. Measure from tire to string in mm.
The outside diameter of the tire would affect speedometer. Just keep them close to each other like your current tires do.
Thread Starter
Newbie
Joined: Sep 2018
Posts: 2
Likes: 0
c300
Owners manual list summer 18" wheel and tire sizes as follows:
Front: 8x18 on 225/40/18 50mm offset
Rear: 8.5x18 on 255/35/18 54mm offset
Think I can get away with either size wheel used *all season* on all 4 corners? or do I always have to maintain staggered for best vehicle dynamics? This vehicle is no hot rod, wonder why MB staggered this model.
Front: 8x18 on 225/40/18 50mm offset
Rear: 8.5x18 on 255/35/18 54mm offset
Think I can get away with either size wheel used *all season* on all 4 corners? or do I always have to maintain staggered for best vehicle dynamics? This vehicle is no hot rod, wonder why MB staggered this model.
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MBWorld Fanatic!
Joined: Mar 2015
Posts: 1,975
Likes: 265
From: Sacramento, CA
2018 GLC300 4Matic; 2008 ML550 4Matic; 2004 C320
Staggered for better looks and supposedly performance.
I run a staggered set on my S550 as well. Actually, all my cars have staggered set up, so did all cars I owned in the past. My daughters BMW 330i has a staggered set as well.
NO 255's in the front!!!!!! I think the 225's are plenty wide on the front.
Last edited by S70Houston; Dec 15, 2018 at 05:11 PM.
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