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Discussion Starter #1 (Edited)
This is for 16" - 19" M-B wheel sizes, lugs, offset's, and tire sizes for the R129.

Please feel free to take a look at the R129 picture gallery

Offset = ET = 25.4mm = 1"
Example: 9.5" rim w/ ET40 and a 9.5" w/ ET23 = -ET17mm/25.4mm= -0.67 inch inside of the wheel to the strut.

Wheel Offset Calculator
Wheel Offsets - Discount Tire Co.

Tire size calculator - Miata
Tire Dimensions Made Simple - Discount Tire Co.

Wheel Spacers
H&R wheel spacers
MotorSportsWorld UK H&R wheel spacers
Alloy Wheel Spacers From The Experts
Mercedes Wheel Billet Spacers

Lug Nuts
RAD Lug Bolts, Toll-Free 1-855-684-7462
Alloy Wheels Direct for lugs in the UK, +44-1-865-339-513 - International Customers

Note: please take a look at the attached PDF below in order to get a better understanding of Lug Nut Shapes and Measurements.

"The difference between the R14 and the R12 ball seats is the CURVATURE OF THE RADIUS OF THE BALL SEAT and that is DIFFERENT between 14M wheels and 12M wheels. Using an R12 ball seat lug bolt in an R14 ball seat wheel can lead to trouble." JPG courtesy of BW Forum Member Check Codes
 

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I'll give it a shot,Heres what I know: 99-02 W/O sport Package 17x7.5 with 34mm offset, I believe with sport pac.18x8.5 and 18x9.5 with 25mm and 23mm. Could some of you other Guys post the wheel sizes for car, Thanks
 

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Does the model year of the R129 even enter the picture at all ? Can we assume any wheel/tire that fits a 2002 would also fit on a 1990 ? and no difference between a 600/500/320/300 etc.
 

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Does the model year of the R129 even enter the picture at all ? Can we assume any wheel/tire that fits a 2002 would also fit on a 1990 ? and no difference between a 600/500/320/300 etc.

I don't think there are any differences between what will fit a stock 1990 and a sport 2002 from the factory, 16 - 18 inches.

The questions come in when trying to use 19 & 20 inch wheels or wrong offsets, which seem to be the latest rash of questions from some of our 'younger' enthusiasts. :)
 

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Discussion Starter #6 (Edited)
I do believe that a"129" wheel will fit ALL 129's, I think that we are looking for "spec's" for each wheel size 15" 16" 17" and 18" offset and width. Thanks!!
Paul, thanks for your help.

This is an example of the AMG Sport package.

245/40/18 front and 275/35/18 rear
8.5Jx18 front and 9.5Jx18 rear
ET25 front & ET23 rear
with a 5x112 mm lug pattern.
 

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Sceptically speaking I know there was a change to larger rotors.
Didn't that change the offset and maybe the bolt pattern somehow?
Regards.
aam.
 

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Discussion Starter #8 (Edited)
I don't think there are any differences between what will fit a stock 1990 and a sport 2002 from the factory, 16 - 18 inches.

The questions come in when trying to use 19 & 20 inch wheels or wrong offsets, which seem to be the latest rash of questions from some of our 'younger' enthusiasts.
The only thing that does come to mind is that 'the front and rear fender lip edges need to be crimped back when the wheels and tires started getting larger with the AMG Sport package staggered design.

It's my understanding that when you want to move to an 18" or greater rim on a R129 that you need to take the rim offset=ET, the tire size, as well as the fender lip edges into consideration if your car did not come with the rolled fender option '774 Shell modification for AMG-wheels'.

The best way to check an R129 is to check the Russin VIN site for the '774 option' or feel the wheel arches and see if the fender lip edges have been bent back to a 110 degree angle.

Please take a look at the PDF below. Most custom wheel shopes can do this with Fender Rollers.
 

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I do believe that a"129" wheel will fit ALL 129's, I think that we are looking for "spec's" for each wheel size 15" 16" 17" and 18" offset and width. Thanks!!
If the chart from Lynns first post is correct http://mountainmarketingwv.com/Pics/MBZPNUM.htm You could say all 1991-1998's had 16x8 et 34 rims from the factory. 1999-2002 had 17x8.25 et 34. It's when you go to the AMG or aftermarket rims, 18x8.5 and 18x9.5 the et's drop anywhere from 23 to 30, but going to a wider wheel also affects the offset right? So the idea of this thread is to determine what wheel sizes with what et is correct, not just what will fit?
 

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Discussion Starter #11 (Edited)
If your not sure what each of the AMG's and Mercedes wheels look like then go to

All Factory Wheels
Factory Original Wheels - Used OEM Rims
AlloyWheelsDirect in Great Britain
Car Shine MB wheels in Australia

Mercedes / AMG replica style rims

Mandrus MB Wheels
PerformanceProducts
EuroTech Luxury Wheels19" Mercedes Replicas
MercedesBenzWheel 1990-2002 - R129 Wheels
MyHotMercedes 1990-2002 - R129 Wheels
Bekkers 1990-2002 - R129 Wheels
WheelHQ MB Replica Wheels
FinishlineWheels Mercedes Replica Wheels
MBSpares Brabus 6 style alloy wheel

Note: always confirm front and rear offsets (ET=mm) as well as lug nut size, diameter, and length.

Please see Mercedes-benz wheel fitting chart or MERCEDES BENZ WHEEL GUIDE ver 2.6

The following sizes will work on a R129.

Front
205/55/16 , 16x7.5 , ET37 (R129 Mercedes OEM Wheel)
225/55R16 , 16x8 , ET34 (R129 Mercedes OEM Wheel)
245/45R17 , 17x8.25 , ET34 (R129 Mercedes Albali Alloy Wheel)
245/45R17 , 17x8.5 , ET35 (R230 MB Avior - OEM Launch Wheel) Note: new lugs needed.
245/45R17 , 17x8.5 , ET18 (R129 AMG I 3 pc.) Note: fenders may need rolling.
245/40R18 , 18x8.5 , ET25 (R129 Mercedes Albireo Sterling Silver Alloy Wheel) Note: fenders may need rolling.
245/40R18 , 18x8.5 , ET25 (R129 AMG I ) Note: fenders may need rolling.
245/40R18 , 18x8.5 , ET25 (R129 AMG I 2 pc.) Note: fenders may need rolling.
245/40R18 , 18x8.0 , ET31 (R129 AMG II) Note: fenders may need rolling 110 degrees.
245/40R18 opt. , 18x8.5 , ET30 (R230 AMG III) Note: new lugs needed.
245/40R18 opt. , 18x8.5 , ET35 (R230 MB Avior - OEM Launch Wheel) Note: new lugs needed.
245/40R18 opt. , 18x8.5 , ET28 (C219 MB)
245/40R18 opt. , 18x8.5 , ET25 (C219 AMG IV)
245/40R18 opt. , 18x8.5 , ET25 (C219 AMG VI)
245/35R19 opt. , 19x8.5 , ET25 (C219 AMG III)
245/35R19 opt. , 19x8.5 , ET25 (C219 AMG IV)
245/35R19 opt. , 19x8.5 , ET25 (C219 AMG VI)
245/35R19 opt. , 19x8.5 , ET25 (C219 AMG VII)

255/35R19 opt. , 19x9 , ET30 (RENNtech Monolite)

Rear
205/55/16 , 16x7.5 , ET37 (R129 Mercedes OEM Wheel)
225/55R16 , 16x8 , ET34 (R129 Mercedes OEM Wheel)
245/45R17 , 17x8.25 , ET34 (R129 Mercedes Albali Alloy Wheel)
245/45R17 , 17x8.5 , ET35 (R230 MB Avior - OEM Launch Wheel) Note: new lugs needed.
255/40R17 , 17x10.0 , ET17 (R129 AMG I 3 pc.) Note: fenders need rolling.
275/35R18 , 18x9.5 , ET23 (R129 Mercedes Albireo Sterling Silver Alloy Wheel) Note: fenders may need rolling.
275/35R18 , 18x9.5 , ET23 (R129 AMG I ) Note: fenders may need rolling.
275/35R18 , 18x10.0 , ET25 (R129 AMG I 2 pc.) Note: fenders may need rolling.
275/35R18 , 18x9.0 , ET35 (R129 AMG II) Note: fenders may need rolling 110 degrees.
275/35R18 opt. , 18x9.5 , ET33 (R230 AMG III ) Note: new lugs needed.
275/35R18 opt. , 18x9.5 , ET40 (R230 MB Avior - OEM Launch Wheel) Note: new lugs needed.
275/35R18 opt. , 18x9.5 , ET33 (C219 MB)
275/35R18 opt. , 18x9.5 , ET28 (C219 AMG IV)
275/35R18 opt. , 18x9.5 , ET28 (C219 AMG VI)
275/30R19 opt. , 19x9.5 , ET28 (C219 AMG III)
275/30R19 opt. , 19x9.5 , ET28 (C219 AMG IV)
275/30R19 opt. , 19x9.5 , ET28 (C219 AMG VI)
275/30R19 opt. , 19x9.5 , ET28 (C219 AMG VII)

295/30R19 opt. , 19x10.5 , ET32 (RENNtech Monolite)

Note: Red denotes OE factory sizes from the R129 Owners Manual's
and black is an optional wheel (opt.) that should fit.
 

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According to the charts above the following sizes should work on a R129.

Front
225/55r16 OEM size
245/45R17 OEM size
245/40r18 OEM size , 18.8.5 , ET25
255/40r18 opt size
245/35R19 opt. size
255/35R19 opt. size , 19x9 , ET30

Rear
225/55r16 OEM size
265/40R17 OEM size
245/45R17 OEM size
275/35r18 OEM size , 18.9.5 , ET23
285/35r18 opt. size
295/30r19 opt. size , 19x10.5 , ET32
255/35/19 for the front also, this is what's on my car
 

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Quote:
Originally Posted by RKH
Be sure to keep a set of old lugs with your spare wheel/tire in the trunk.

This is a great suggestion.

--------------------------------------------------------------------------------
Last edited by lynns : 08-25-2008 at 02:59 AM.

We've had problems with after market rims, when the lug bolt size was different than stock. Had to keep the proper size socket and breaker bar in the trunk as well. The stock lug bolt wrench would not fit in this case.

Regards,
DaveL
Toronto
 

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As the offset gets larger for a given rim size, the outside edge of the tire moves toward the center of the vehicle. This means that the axle (virtual) of a car needing a 40mm offset has a wider hub to hub width than a one needing a smaller offset. Find the link to 1010 tire in this thread and experiment with the offset sizes in the tire offset calculator.

http://www.benzworld.org/forums/r129-sl-class/1394183-r129-tire-wheel-sizes-ets.html
 

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Well....I was going to wait until the car was stored for the winter, to replace the front tires....

Then we blew a tire.


So, my problem is this:
My car has (had!) 235 40 18's
I see that they "should" be 245 40 18's.

I know that we aren't talking about a huge difference (roughly 1/2" in width), but what benefit is there to the larger tire on the front?

One other question. No one seems to talk about tire load rating here. I have seen 91 (1356lb) all the way up to 97 (1609lb). The Pilots on the front, were only 91's, and this concerns me. Does any one know what the proper rating should be.

PS. First time I have used an MB jack....wow! that was easier then my floor jack!
 

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Discussion Starter #17 (Edited)
load carrying capacity of an SL

cthomson you should go with at least 95 load index tyres.
R129s are not light at all.
He's right. We actually need to talk about the 'load carrying capacity' of the SL and it should be >95. The topic is discussed at Load Index Chart. My 2000 SL500 has a curb weight of 4125 pounds.
 

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Thanks for the comments guys.
I will be getting the 245 40's in a 95 or 97 load rating.
I only have a couple weeks of driving left....so lets hope that I can get local stock!
Hi cthomson you can try to order the tyres you want at the following site. They usually arrive in 2 or 3 days and when I used them they were very efficiend and cheap.

LINK.

Hope it helps.

Cheers.
 

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Hi cthomson you can try to order the tyres you want at the following site. They usually arrive in 2 or 3 days and when I used them they were very efficiend and cheap.

LINK.

Hope it helps.

Cheers.
Thanks
They have the tires I want....but I hate paying 120.00 for shipping (for 2 tires)!
If the tire shops in town dont have them, I will be ordering from them

Chris
 
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