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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-28-2015, 12:55 AM   #1
jakethesteak
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Join Date: Mar 2014
Location: Colorado Springs
Posts: 34
My Ride: 2003 E46 M3
Offset question.

Hello forum! So I've been all over the internet/forums trying to figure out the correct offset for 19" CSL reps. I already have OEM 18's for performance and I'm about to pull the trigger on some 19" replicas from Umnitza for cruising/looks. They say they'll provide the right offset for my car ('03 bone stock M3). But what is the right offset?

Wheel specs:
Front - 19x8.5
Rear - 19x9.5

From what I've read, that's the size of the OEM CSL wheels and the offset for them is apparently: 44 for the fronts and 27 for the rear.

But I've read about all kinds of different offsets. I want a stock look; as flush as possible without using spacers or anything. I don't want rub (who would..?) and I don't want the tires to be too sunk in or pop too far out.

I also plan on purchasing tires that are CSL spec'd:
235/35 & 265/30. Will that size be good for DD? I don't want the car to be lifted or anything but I want enough sidewall to protect the wheels...and I don't really dig that "stretched" sidewall look too much..

Again, I want a stock look...going for the "CSL" style if you haven't figured that out yet

Sorry about the n00b questions. Wheels & tires are not exactly my specialty

Thanks!

Last edited by jakethesteak; 03-28-2015 at 01:04 AM.
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Old 03-28-2015, 10:50 PM   #2
Netman
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My Ride: 2003 M3
Fronts 8.5" et44
Rears 9.5" et27
I run 235/35 front and 275/30 rear and looks good

Last edited by Netman; 03-28-2015 at 10:51 PM.
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Old 03-28-2015, 11:21 PM   #3
jakethesteak
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Quote:
Originally Posted by Netman View Post
Fronts 8.5" et44
Rears 9.5" et27
I run 235/35 front and 275/30 rear and looks good
Thanks for the reply! You run 275 in the rear? Are those taller?
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Old 03-29-2015, 12:57 AM   #4
TboneM3
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If you were to go with offsets of 44 front and 27 rear, you'd be disappointed and run spacers to get a flush or close to flush look. If you went with 235/275 tire combo, your traction control wouldn't work properly.

The traction control is meant to work with a 225/275 combo. Other combos that are close are 235/265 adn 245/275.

For offsets, you'll want something closer to 35 front and 20 rear for those wheel widths. If you run 225/255 tires, you could go with 30 front and 15 rear offsets.

The stock 47/27 is pretty sunken in to most of us. People usually use 15mm/12mm spacers, so what is 47-15mm and 27-12mm?

32/15.
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///2004 SilberGrau M3 Coupe 6MT no sunroof/zero options

Evolve-R EVenturi Euro Headers|Sect 1 OM Scorza D/A pullies/fan delete Turner camber/subf plates
RE Besian AKG AutoSolutions 30% TMS front sway GroundControl (Koni/Eibach) Sportline 8S 18" PSS 245/275
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Old 03-29-2015, 09:00 AM   #5
Netman
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I don't think the 225/275 combo is correct, I could be wrong. I do have a spacer on the rear but can't remember the thickness, around 6mm. Never had issues with my traction control.
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Old 03-29-2015, 09:09 PM   #6
Syfon
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I run CSL replicas. 19 x 8.5 +40 (front), and 19 x 10 +25 (rear). 225 and 265 tyre sizes. Rims sit inside the guards by the smallest amount, less than 5mm.
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Old 03-30-2015, 01:15 PM   #7
TboneM3
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Quote:
Originally Posted by Syfon View Post
I run CSL replicas. 19 x 8.5 +40 (front), and 19 x 10 +25 (rear). 225 and 265 tyre sizes. Rims sit inside the guards by the smallest amount, less than 5mm.
CSl size tires are 235/265 - did you not do any research ahead of time?? If you don't go with that, your only 2 other viable options are 225/255 or 245/275 maybe 285 if you have a SC/Turbo.

225/265 is causing your car to understeer, which it already does, naturally, and your traction control is getting thrown off.
__________________
///2004 SilberGrau M3 Coupe 6MT no sunroof/zero options

Evolve-R EVenturi Euro Headers|Sect 1 OM Scorza D/A pullies/fan delete Turner camber/subf plates
RE Besian AKG AutoSolutions 30% TMS front sway GroundControl (Koni/Eibach) Sportline 8S 18" PSS 245/275
Pioneer DEH-80PRS Eclipse PA5422 CDT HD-6 + WS-100i CDT EX-530
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Old 03-30-2015, 08:04 PM   #8
Syfon
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When i purchased the car, the tyres already fitted were 225 & 265. I'm not about to go spend $1,000 to change my tyres to the correct size/specs for the sake of a bit of understeer. I daily drive my car in city traffic, rarely exceeding 60kp/h. I'll reaplce the tyres with the correct sizes when they are due for replacement.

As for the rims, I purchased them through a company in Melbourne who have been selling them for many years and have sold thousands of sets. Many people I know have had the exact same set as I, with no issues what so ever.

I am well aware my CSL replicas are not the correct size in accordance with BMW's specs, but it doesn't make 1 sh!t of a difference to me.

As I have already stated, I am simply using what tyres were on the standard 19's when I purchased the car. I'll replace them later.
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Old 03-30-2015, 09:03 PM   #9
jakethesteak
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Been looking around some more about offsets and whatnot. Especially with the new info provided by you guys. Stumbled upon an M3Forum thread with this link:

http://www.rimsntires.com/specspro.jsp

Now, I know its not a perfect representation of what it will look like on my car but after playing with it for a bit I really liked the way the ET32 front and ET15 rear offset looked with CSL tire sizes. I think it would look like a nice setup and provide enough sidewall to protect the wheel itself. I especially didn't think (or even know) about the traction control issue.
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Old 04-01-2015, 12:50 PM   #10
jakethesteak
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My Ride: 2003 E46 M3
Update:

Bought some wheels. Should be at my doorstep early next week. However, they didn't have the exact offset I wanted.
The offset for the wheels I purchased are:

Front: ET35
Rear: ET33

Obviously, the rear offset is much higher than stock but the rep told me I could run a spacer to flush it up a bit.

What size of spacer should I get for the rears? 12mm? 15mm?

I found these from eBay:
http://www.ebay.com/itm/Custom-Hubce...b44671&vxp=mtr

There are a bunch of other size options as well. 12mm is what the rep said I could do to make it look more flush than ET33.

FYI: I'm on stock suspension and I will run 235/35 265/30 tires.

Also, how thick of a spacer can I go before needing longer bolts?

Thanks!

Last edited by jakethesteak; 04-01-2015 at 12:53 PM.
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