I need a favor
Senior Member
Joined: Apr 2008
Posts: 252
Likes: 0
From: Fort lauderdale, Florida
2005 Red C55 AMG and 2009 Harley davidson NIghtster SIlver and black
Its weird. Yesterday I tried it again put in (M) mode and @ 60 mph i was at 2200 rpms and then @ 70 mph i was at 2550 rpms.
What could be the reason for one day being different.
The only thing I can think of is maybe I was in a different mode perhaps (S)
What could be the reason for one day being different.
The only thing I can think of is maybe I was in a different mode perhaps (S)
Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
This is my understanding as well. In kompressor21's case, his effective gearing has been changed by his aftermarket wheel/tire fitment. alboogiee appears to be using a stock C55 tire fitment, so his data is probably more useful to any C55 on 18's. hooley - what was going on with your ride to seem like the rpm's were off? Hopefully nothing too serious. 
Out Of Control!!
Joined: Nov 2005
Posts: 18,677
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From: OC
a quarter mile at a time
MBWorld Fanatic!
Joined: Mar 2005
Posts: 1,109
Likes: 8
From: Tampa FL
.
I tested this on a 6% grade on my way home today... Going up and going down at 60 MPH, the RPM is about 100 higher going up and 100 lower going down. I had to push a little harder on the gas to keep 60 MPH and I let off completely to coast down at 60. No cruise control this time, car did not up or down shift in S mode.
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Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
I've got my tire fund in the works knowing I'm going to need some soon. But yeah, I run 255's its a wonder why I can spin them any time i want.
my car really needs a 295, but that inst happening.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
surprisingly they have been holding up ok. I've got the get my rear bumper reset. some one tapped it with their car and knocked the rear bumper out of wack on the pass side at the wheel well. So now i rub a bit over some bumps. Its hard to notice visually though so thats a good thing.
I've got my tire fund in the works knowing I'm going to need some soon. But yeah, I run 255's its a wonder why I can spin them any time i want. my car really needs a 295, but that inst happening.
I've got my tire fund in the works knowing I'm going to need some soon. But yeah, I run 255's its a wonder why I can spin them any time i want.
my car really needs a 295, but that inst happening.
MBWorld Fanatic!
Joined: Mar 2005
Posts: 1,109
Likes: 8
From: Tampa FL
.
give or take... if you look at the pictures I posted above, it show almost spot on to 2125RPM, going down hill it hovers just slightly above 2000 but not on it, and up hill slightly above the the half mark of 2125 but below 2250. With a reasonable amount of eyeball certainty I can defiantly say there is a difference up and down hill at 60 MPH
