SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Need proper offset for 305's on 20x10.5 for SL55

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Old Oct 13, 2016 | 01:50 PM
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2003 SL55
Need proper offset for 305's on 20x10.5 for SL55

So I decided to get a set of 20's and am trying to order the rims tonight and plan on doing 9" in front with 255 and 10.5 in rear with 305 ....I searched over and over and couldn't find the answer....I already know the rims and tires fit since it seems a lot of people do that set up but what i couldn't find the answer to is what offset people use when going with that set up ?
My car is lowered on links
I saw another post where someone asked the same thing but i couldn't find anyone actually answering his actual question

So can anyone who currently has this exact set up on their car please tell me the offset in order for this to not rub
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Old Oct 13, 2016 | 05:35 PM
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I'm not the author of this document, I found it in the forums whilst browsing one day. It may help.
Attached Files
File Type: pdf
Mercedes wheel_fitments.pdf (40.9 KB, 236 views)
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Old Oct 13, 2016 | 08:07 PM
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I wish that helped, it only showed for 18 and 19 inch rims..everyone keeps saying that they know someone with that set up but nobody posts the offset and if the car is lowered or not...I called a shop and they said 10.5 works but its the 305 tire that would be a little wider than the rim that they're not sure about so we can't figure out what offset i need in order to order these rims
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Old Oct 13, 2016 | 11:57 PM
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Originally Posted by thisfoolabe
I wish that helped, it only showed for 18 and 19 inch rims..everyone keeps saying that they know someone with that set up but nobody posts the offset and if the car is lowered or not...I called a shop and they said 10.5 works but its the 305 tire that would be a little wider than the rim that they're not sure about so we can't figure out what offset i need in order to order these rims
I think you should have a closer look at the PDF. There is definitely data on 20's.
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Old Oct 14, 2016 | 12:32 AM
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25 front and 27 rear will fit fine

This is a pic of 27 front and rear. 305/25/20 with 20x10.5 in back.


Last edited by desired_speeds; Oct 14, 2016 at 12:34 AM.
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Old Oct 14, 2016 | 05:18 PM
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The link below shows the offsets for all wheel sizes

http://www.alloywheelsdirect.net/inf.../mercedes-benz
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