C55: suspension upgrades?
Senior Member
Joined: Aug 2011
Posts: 490
Likes: 8
From: SF Bay Area
2005 C55
Schmidt Vn
Oz Racing Superleggera III
btw 20x10 285/30/20 on my Oz racing rears and 265/30/19 on 19x11 on Schmidts
Last edited by greekspec2; May 9, 2015 at 09:46 PM.
Moderator Alumni
Joined: Apr 2006
Posts: 3,255
Likes: 22
From: Seattle
w203 m112
Hey,,, good that you reacted on my ET43.
That made me thinking.
And,, i´m wrong
As my rims are ET35 and i´ve got 8mm spacer it will ofcourse be ET27
And i can add about 3-5mm without rubbing.
That makes our measurements line up to each other.
So i can run about ET22 as maximum, this would clear up my mess in my head.
Just to place an order then
Thank you TruTaing.
That made me thinking.
And,, i´m wrong
As my rims are ET35 and i´ve got 8mm spacer it will ofcourse be ET27
And i can add about 3-5mm without rubbing.
That makes our measurements line up to each other.
So i can run about ET22 as maximum, this would clear up my mess in my head.
Just to place an order then
Thank you TruTaing.
I doubt you're running an 8mm spacer because our front suspension has a little lip on the wheel hub. As a result, most people either use spacers under 5mm or over 10mm.
Anywho. You will not poke at ET25.
Thread Starter
Super Member
Joined: Dec 2009
Posts: 826
Likes: 106
From: Sweden
2011 C63 AMG, 589hp
I am running 8mm spacer,,
Special centerrings was ordered to center the rims
And as you say, a very little lip is there to help guide the wheel.
My plastic centerring centers the wheel just outside that one.
And.. mine is converted to, what do you call it 'lugs'?
Nuts has also ordinary 60 degree cone(not mercedes radius), as my wheels are made for Audi originally.
Special centerrings was ordered to center the rims
And as you say, a very little lip is there to help guide the wheel.
My plastic centerring centers the wheel just outside that one.
And.. mine is converted to, what do you call it 'lugs'?
Nuts has also ordinary 60 degree cone(not mercedes radius), as my wheels are made for Audi originally.
Last edited by swedepat; May 10, 2015 at 02:16 PM.
Thread Starter
Super Member
Joined: Dec 2009
Posts: 826
Likes: 106
From: Sweden
2011 C63 AMG, 589hp
and... one thing.
Do not ever think that silly plastic ring will center the wheel perfectly.
When going hard a day at the track as an example i´ve seen melted plastics smeared all over the hub.
Still,, the wheel was perfectly centered.
When using plastic ring, it´s the bolt´s with their taper or radius that centers the wheel.
The ring is only a guide to help mounting the wheel.
Using metalring or rims with correct hubdiam is a whole other ballpark.
Rgds
Do not ever think that silly plastic ring will center the wheel perfectly.
When going hard a day at the track as an example i´ve seen melted plastics smeared all over the hub.
Still,, the wheel was perfectly centered.
When using plastic ring, it´s the bolt´s with their taper or radius that centers the wheel.
The ring is only a guide to help mounting the wheel.
Using metalring or rims with correct hubdiam is a whole other ballpark.
Rgds
Junior Member
Joined: Jul 2011
Posts: 67
Likes: 6
From: Qc, Canada
2005 C55
I have C63 rear spring with 5mm pads and eibach 22mm sway bar to the rear, for the front I have a front h&r 26mm sway bar and more front camber. I like the feeling, very more oversteer than oem set-up. I have a Quaife Lsd too and a square set-up in 255/40r17 on 17x8.5 wheels. I have 4 pistons rear caliper with 13'' slk rotor. Really good at the track.
I think sway bar option are a good option for you!
I think sway bar option are a good option for you!
Thread Starter
Super Member
Joined: Dec 2009
Posts: 826
Likes: 106
From: Sweden
2011 C63 AMG, 589hp
I chickened out..
I can´t buy a coiloversetup and then find out that my tires rub,
After scanning this forum a couple of horrorpics floated to the surface.
And as my tires has a bit more diam than std,,, nope.. i won´t go that route.
So i bought a set of Bilstein B8´s instead and will have 'lesjöfors' make new springs custom for me.
Good to have relatives working at the factory
And funny enough it´s my mom´s homevillage, this Lesjöfors village.
It´s located about 60miles from here.
I might just get new rollbars as recommended instead
Rgds
I can´t buy a coiloversetup and then find out that my tires rub,
After scanning this forum a couple of horrorpics floated to the surface.
And as my tires has a bit more diam than std,,, nope.. i won´t go that route.
So i bought a set of Bilstein B8´s instead and will have 'lesjöfors' make new springs custom for me.
Good to have relatives working at the factory
And funny enough it´s my mom´s homevillage, this Lesjöfors village.
It´s located about 60miles from here.
I might just get new rollbars as recommended instead
Rgds
Senior Member
Joined: Mar 2010
Posts: 252
Likes: 4
From: Toronto
2006 C55 RENNtech
C55 suspension upgrade
Well I myself was in the same predicament as you,I recently removed my H&R coilovers and was just about to pull the trigger on KW V2 but,
I just purchased a set of Renntech springs with the B8s.
As for the tire size it is not really suppose to make a difference with 18-19-20s If your tire shop knows what they are doing the plus 1 or plus 2 concept in the end the overall diameter should be the same
If you don't understand.
Lets say the overall size of the diameter is 26'' on a 18'' rim/tire combo
Weather you go 19 or 20 it still should be 26 in the end.
You are just going to have less sidewall.
Eg. front 18x8.5 et 30 tire 225/40/18 = 19x8.5 et30 tire 235/35/19
I just purchased a set of Renntech springs with the B8s.
As for the tire size it is not really suppose to make a difference with 18-19-20s If your tire shop knows what they are doing the plus 1 or plus 2 concept in the end the overall diameter should be the same
If you don't understand.
Lets say the overall size of the diameter is 26'' on a 18'' rim/tire combo
Weather you go 19 or 20 it still should be 26 in the end.
You are just going to have less sidewall.
Eg. front 18x8.5 et 30 tire 225/40/18 = 19x8.5 et30 tire 235/35/19
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Thread Starter
Super Member
Joined: Dec 2009
Posts: 826
Likes: 106
From: Sweden
2011 C63 AMG, 589hp
Yes.. but you have to do consider that tiremanufacturers isn´t all the same in measurements.
I measured twice and cut´d once, it was way to small clearance for my taste.
Remember, rimprotector on different tires are very very different.
Everyone says it should work, well,, it don´t.
I know all about tiredimensons and percentage of width is profile,,, yada yada.
My tires are about 10mm more diameter than std.
And clearance to std strut is at the rim-lip, 9mm, then the rimprotector is a bit wider then the rim., and at exactly that spot std strut is pressed oval.
And upwards against the std perch it´s ~6mm clearance.
And clearance between rim and fender is 3mm, cannot retract any more from ET
And now it´s too late, the B8´s are already home.
Rgds.
I measured twice and cut´d once, it was way to small clearance for my taste.
Remember, rimprotector on different tires are very very different.
Everyone says it should work, well,, it don´t.
I know all about tiredimensons and percentage of width is profile,,, yada yada.
My tires are about 10mm more diameter than std.
And clearance to std strut is at the rim-lip, 9mm, then the rimprotector is a bit wider then the rim., and at exactly that spot std strut is pressed oval.
And upwards against the std perch it´s ~6mm clearance.
And clearance between rim and fender is 3mm, cannot retract any more from ET
And now it´s too late, the B8´s are already home.
Rgds.
