I Need Some Info On Wheels And Tire Ratios And the Science For My C230 Sedan ???? - Page 2

May 3, 2006 | 09:17 AM

#26

thom_doe

Banned

Joined: Apr 2006

Posts: 25

Likes: 0

I searched. Please answer my questions. Thanks

May 3, 2006 | 09:50 AM

#27

Elliott

Member

Joined: Jan 2006

Posts: 141

Likes: 0

From: Nashville, TN

'03 C230 Sedan

pathetic...you could keep one screen name...ask things in a sophisticated manor...and you would achieve the information you want to achieve...it would save you a lot of trouble

May 3, 2006 | 11:48 AM

#28

drexappeal

Super Moderator Alumni

Joined: Mar 2004

Posts: 7,684

Likes: 12

From: West Los Angeles

Midnight Blue 2004.5 C230 Kompressor Sport Sedan. 2002 w210 E320, 2009 w211 E350 Sport

Quote:

Originally Posted by TA-9FF

Wow we sound like a bunch of girls talking about chocolate....

LOL...Same ish I was thinkin'!...hahaha. Oh well, those candies are damn good though.

May 3, 2006 | 12:36 PM

#29

whoover

MBWorld Fanatic!

Joined: Mar 2006

Posts: 4,278

Likes: 377

From: San Jose area

'19 E63S sedan

Quote:

Originally Posted by thom_doe

I searched. Please answer my questions. Thanks

It is hard to glean the question around here, between the trolls and the OT posts, but there seems to be a simple fact that underlies the topic that hasn't been mentioned: the goal of bigger wheels is not bigger-diameter tires. In general, you are replacing rubber with metal by using larger-diameter wheels and lower profile tires. This improves handling because rubber is, well, rubbery. On the other hand, it will give a stiffer ride for the same reason. The combination will ideally have the same total diameter as the original setup. There will be no change to the speedometer calibration and other systems (like ABS).

In reality, there is often a few percent difference, but not enough to worry about. Of course, selecting wider tires (the thickness of the doughnut, not its outside diameter) may be part of the upgrade, to get more rubber on the road. But this is independent of outside diameter.

As an example, a 215/50R17 has an outside diameter of 25.5" while a 225/40R18 has an outside diameter of 25.1". This is a 1.5% deviation, and is a suitable "+1" fitment. 235/35R19 has an outside diameter of 25.5" and might be a suitable "+2" fitment. Note that these sizes are just for illustrative purpose and have nothing to do with any Mercedes or other realworld car.

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