Wheel tyre combo question (new w221 owner)
New to the w221 have owned couple of w220 s class's, finally made step up and can not believe the difference. My question to you is that I have standard 18's on which look lost! now I don't want to go huge and ruin the ride but I want to fill out those big arches so thinking of 19" lowering a little and going either 255 front 275 rear and either 45 or 40 profile??.
So
#1-what is best offset?
#2-what is best profile?
#3-what is best width tyre?
Many thanks in advance of your wisdom
IMO, coming from two prior 220's myself and being wheel-obsessed, the "right" look for the car is staggered 20" with the OEM tire sizes, (255/35 front and 275/35 rear) and low offset wheels or OEM offset wheels with spacers. That fills the fender wheels without compromising ride quality. I think drops are dicey business, and when the car is low enough to make a difference it's too low to preserve the ride.
I'm on OEM S63 20" staggered with 20mm rear spacers and 15mm front, for effective offsets of 24mm rear and 29mm front. That's as close to flush as you can get without rubbing issues, or having to roll the fenders. You could also do aftermarket replica wheels at the standard 35mm offset. Not as aggressive but no need for spacers.
so what were the et on your wheels before spacers?guessing about 44mm? as the smallest hubcentric spacer is 15mm (I'e with a ring for rim) so what would be ideal et for filling arch out without spacer?
Or et front and back to use 15mm hubcentric spacer to fill out arch.
Sorry for all question but starts to melt my brain!!
Cheers Nick
Last edited by WHPH28; Oct 17, 2015 at 02:46 PM.
Cheers Nick
Chris the swede on here has those wheels in 22". I think in 19" they may not look right because of the concaveness of them?
Have you got a link to picture of Chris the swedes ones please.
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so what were the et on your wheels before spacers?guessing about 44mm? as the smallest hubcentric spacer is 15mm (I'e with a ring for rim) so what would be ideal et for filling arch out without spacer?
Or et front and back to use 15mm hubcentric spacer to fill out arch.
Sorry for all question but starts to melt my brain!!
Cheers Nick
If you did go replica at 35mm all around, 10mm spacers on the rear would put you flush at 25mm, and 5mm front spacers would be flush at 30mm. (Don't sweat being a mm off, it's a sliver.) Get good spacers from HR Trak, not the cheap EBay stuff.
That's my train of thought anyway!
So my question to you is (last one I promise) can I go 255 45 19 & 275 45 19 or do I have to go 255 40 19" & 275 40 19.
Many thanks
Nick
That's my train of thought anyway!
So my question to you is (last one I promise) can I go 255 45 19 & 275 45 19 or do I have to go 255 40 19" & 275 40 19.
Many thanks
Nick

I think you can run either profile, but the 40 sidewall ratio tires will look better (less "chunky"). Sidewall is reflected in the tire size as a percentage of tread with. So a 255/40 has a sidewall that is 40% of 255mm = 102mm sidewall height.
102mm = 4" sidewall height on the 255/40/19. That's a lot of sidewall. The 20" version (not surprisingly) is about a 3" sidewall. That's the size of the sidewall on my car.
255/45 would give you 45% of 255mm = 114mm 4 1/2" sidewall height.
So the difference is an extra half inch of sidewall under the car between those two sizes on the front. The sidewalls on the rears will be marginally taller relative to the fronts , since the tread width increases but the sidewall ratio remains the same.
275/40 (275X.40)= 110mm (4 3/4")
I totally get the idea of playing it safe on the 19's, but if the net result isn't the look you're going for, you're going to be bummed. A 221 is perfectly content on 20's, but if you're set on the 19's do the 40 profiles.
Last edited by Mike5215; Oct 19, 2015 at 09:42 AM.
How did you deal with the speedo error? I would have thought that these tyres were slightly higher and would cause an error in speedo reading from 1 to 4 MPH from 50 to 150 MPH.? Thx


