Our wheel spacer options (all inclusive).

[BenFenner]

If I've left anything out, please post below and I will add it to the list. If I've made a mistake, please correct me. If you'd like to see more product break-down detail please let me know.

Keep in mind that while I've tried to provide the most relevant and informative link, it's possible you can't buy from the link and will need to find an approved vendor. It's also possible you may find cheaper prices if you do your own research.
Since this is Z3 specific, only 5×120mm, hub-centric, and wheel-centric (when appropriate) options are listed. If you aren't concerned with these features, there are countless universal solutions to consider outside of the ones listed here.
When choosing a spacer, make sure if it has a 45-degree shoulder for the hub extension that your wheel has a corresponding 45-degree chamfer.

The spacers are organized in categories that describe four different spacer types.
1) One-piece, "flat" spacers thin enough to not require a hub extension. These sandwhich between the wheel and the rotor hat.
2) Two-piece, "flat" spacers similar in thickness to the factory hub extension necessitating a second piece to extend the hub. These sandwhich between the wheel and the rotor hat.
3) One-piece spacers thick enough to require a wheel-centric hub extension. These sandwhich between the wheel and the rotor hat.
4) The bolt-on type of spacer which is large enough to incorporate its own mounting hardware.

For reference, the Z3 bolt pattern is 5×120mm, the wheel center bore is 72.56mm, the wheel bolt is 12mm diameter by 1.5 thread pitch and has a threaded length of 25mm. The factory hub extension extends ~10mm beyond the brake rotor hat.

Read the posts below for more details.


One-piece, "flat" options:

Manufacturer	Available sizes (mm)	Windowed?	Extended hardware?	Pry provision?	Size labeled?	Link	Notes
VAC Motorsports	5	Aggressively	Optional	Full shelf	Yes	http://store.vacmotorsports.com/bill...m-hub-p70.aspx	For optional hardware inclusion, navigate to their "wheel spacer kits" section
BimmerWorld	5	Aggressively	Not Included	Full shelf	Yes	http://store.bimmerworld.com/bimmerw...ers-p2246.aspx	The description claims a 5mm size, but the drop-down menu doesn't show the option. Call them?
Turner Motorsport	5	Aggressively	Optional	Shelf slots	Yes	http://www.turnermotorsport.com/c-14...l-spacers.aspx	Questionable customer service. Check their reviews.
Macht Schnell	3, 5	Aggressively	Included	Shelf slots	Yes	http://www.machtschnell.com/categori...ls-accessories	N/A
BWSport	5	Yes	Optional	Full chamfer	Yes	http://store.bimmerworld.com/bwsport...ers-p1296.aspx	N/A
UUC	5	Yes	Not Included	No	Yes	http://store.uucmotorwerks.com/wheel...bore-p712.aspx	N/A
ECS Tuning	5	Yes	Optional	No	Some	http://www.ecstuning.com/BMW-Z3-2.3-...heels/Spacers/	Web site images only show size labeling for some sizes, but they might be outdated images?
Velocity Motoring (VMR Wheels)	3, 5	Yes	Included	No	?	https://www.bimmian.com/BMW-Wheel-Sp...W-E36-3-Series	Spacers are labeled with bolt pattern, so they might have additional labeling?
H&R	3, 5	Yes	Pkg Dependent	No	No	http://www.trakplus.com/	Spacers are labeled with part numbers and other info, but not directly the size
Mechünik	3, 5	Yes	Included	No	No	http://www.bimmian.com/Mechunik-Blac...W-E36-3-Series	Spacers are labeled with part numbers and other info, but not directly the size
Raceland	5	Yes	Pkg Dependent	No	No	http://www.racelandus.com/wheel-spac...l-spacers.html	N/A
Eibach	5	Yes	Included	No	?	http://eibach.com/america/en/perform.../wheel-spacers	Spacers are labeled but I'm not sure with what
Motorsport Hardware	5, 10	Some	Optional	No	No	http://motorsporthardware.com/produc...5x120-72-56cb/	Make sure you know what you're getting into when buying the 10mm spacer regarding the hub extension or lack thereof. | Company owner Ryan Castro (kalib0y) is a forum member.
Vorshlag	5	Some	Not Included	No	No	http://www.vorshlag.com/index.php?cPath=1_77_175	5mm size almost certainly made by Racemax
Racemax	5	No	Optional	No	No	http://www.bmpdesign.com/category-exec/category_id/168/	Thicker spacers held in place with extended brake rotor retaining bolt
Adaptec Speedware	3, 5	No	Pkg Dependent	No	No	http://www.motorsport-tech.com/adaptec/car/bmw_s	The web page is coded very poorly; expect the unexpected. | The images are misleading and show two spacers when you only get one for the price.
Otis Inc. LA	3, 5	No	Included	No	?	http://otisincla.com/index.php?route...ry&path=70_246	Images not representative, spec typos abound

Two-piece, "flat" options:

Manufacturer	Available sizes (mm)	Windowed?	Extended hardware?	Pry provision?	Size labeled?	Link	Notes
VAC Motorsports	7, 8	Aggressively	Optional	Full shelf	Yes	http://store.vacmotorsports.com/bill...m-hub-p70.aspx and http://store.vacmotorsports.com/vac-...ers-p2191.aspx	The hub extensions fit on the front hubs only. It's not clear which ones to buy exactly. | For optional hardware inclusion, navigate to their "wheel spacer kits" section.
Rogue Engineering	10	Aggressively	Included	Full shelf	Yes	http://www.rogueengineering.com/rogu...R/WSPACER.html	The hub extensions fit on the front hubs only.
Turner Motorsport	7.5, 10	Aggressively	Optional	Shelf slots	Yes	http://www.turnermotorsport.com/c-14...l-spacers.aspx	The hub extensions fit on the front hubs only. Questionable customer service. Check their reviews.

One-piece, hub-extending options:

Manufacturer	Available sizes (mm)	Windowed?	Extended hardware?	Pry provision?	Size labeled?	Link	Notes
VAC Motorsports	10, 12, 15, 18, 20	Aggressively	Optional	Full shelf	Yes	http://store.vacmotorsports.com/bill...m-hub-p70.aspx	For optional hardware inclusion, navigate to their "wheel spacer kits" section
Rogue Engineering	10, 12, 15, 18	Aggressively	Included	Full shelf	Yes	http://www.rogueengineering.com/rogu...R/WSPACER.html	N/A
BimmerWorld	10, 12, 15, 20	Aggressively	Not Included	Full shelf	Yes	http://store.bimmerworld.com/bimmerw...ers-p2246.aspx	N/A
Turner Motorsport	10, 12.5, 15, 17.5, 20	Aggressively	Optional	Shelf slots	Yes	http://www.turnermotorsport.com/c-14...l-spacers.aspx	Questionable customer service. Check their reviews.
Macht Schnell	10, 12, 15, 18, 20	Aggressively	Included	Shelf slots	Yes	http://www.machtschnell.com/categori...ls-accessories	N/A
Rally Road	10, 12.5, 15	Some aggressively so	Not Included	Threaded	Yes	http://rallyroad.net/catalog/58	The pictures tell the story best
Burger Motorsports	10, 12, 15, 18, 20	Yes	Included	Shelf slots	Yes	http://www.burgertuning.com/BMW_wheel_spacers.html	N/A
BWSport	12, 20	Yes	Optional	Full chamfer	Yes	http://store.bimmerworld.com/bwsport...ers-p1296.aspx	N/A
UUC	12, 20	Yes	Not Included	No	Yes	http://store.uucmotorwerks.com/wheel...bore-p712.aspx	N/A
ECS Tuning	10, 12.5, 15, 17.5, 20	Yes	Optional	No	Some	http://www.ecstuning.com/BMW-Z3-2.3-...heels/Spacers/	Web site images only show size labeling for some sizes, but they might be outdated images?
Velocity Motoring (VMR Wheels)	10, 12, 15, 20, 25	Yes	Included	No	?	https://www.bimmian.com/BMW-Wheel-Sp...W-E36-3-Series	Spacers are labeled with bolt pattern, so they might have additional labeling?
H&R	10, 12, 15, 20	Yes	Pkg Dependent	No	No	http://www.trakplus.com/	Spacers are labeled with part numbers and other info, but not directly the size
Mechünik	12, 15, 25	Yes	Included	No	No	http://www.bimmian.com/Mechunik-Blac...W-E36-3-Series	Spacers are labeled with part numbers and other info, but not directly the size
Raceland	10, 15	Yes	Pkg Dependent	No	No	http://www.racelandus.com/wheel-spac...l-spacers.html	You may want to double-check if ordering a 10mm spacer that it does have a hub extension.
Eibach	12, 15, 20	Yes	Included	No	?	http://eibach.com/america/en/perform.../wheel-spacers	Spacers are labeled but I'm not sure with what
Vorshlag	12, 15, 20	Some	Not Included	No	No	http://www.vorshlag.com/index.php?cPath=1_77_175	12 and 20mm sizes windowed to save weight and are probably made by H&R or Eibach | 15mm size almost certainly made by Racemax
Motorsport Hardware	12, 15, 17, 20	No	Optional	No	No	http://motorsporthardware.com/produc...5x120-72-56cb/	Company owner Ryan Castro (kalib0y) is a forum member.
Racemax	12, 16, 20	No	Optional	No	No	http://www.bmpdesign.com/category-exec/category_id/168/	Thicker spacers held in place with extended brake rotor retaining bolt
Adaptec Speedware	10, 12, 15, 20, 25	No	Pkg Dependent	No	No	http://www.motorsport-tech.com/adaptec/car/bmw_s	The web page is coded very poorly; expect the unexpected. | The images are misleading and show two spacers when you only get one for the price.
Otis Inc. LA	12, 15, 20	No	Included	No	?	http://otisincla.com/index.php?route...ry&path=70_246	Images not representative, spec typos abound
Wheel Mate (Mackin Industries)	10, 13, 20	No	Not Included	No	No	http://www.horsepowerfreaks.com/part..._Centric/14678	You may want to double-check if ordering a 10mm spacer that it does have a hub extension.
Ireland Engineering	15	?	?	?	?	http://www.iemotorsport.com/bmw/E30-...5mmspacer.html	If you know anything about these, let us know!

Bolt-on options:

Manufacturer	Available sizes (mm)	Pry provision?	Size labeled?	Link	Notes
Adaptec Speedware	15, 20, 25, 30	No	?	http://www.motorsport-tech.com/adaptec/car/bmw_s	The web page is coded very poorly; expect the unexpected. | The images are misleading and show two spacers when you only get one for the price.
H&R	20, 25, 30	No	No	http://www.trakplus.com/	Spacers are labeled with part numbers and other info, but not directly the size
Eibach	20, 25, 30	No	?	http://eibach.com/america/en/perform.../wheel-spacers	Spacers are labeled but I'm not sure with what

[Z3 M Roadster]

VAC also has spacers. http://store.vacmotorsports.com/bill...m-hub-p70.aspx

Nice job!

[BenFenner]

I've added the VAC info, thanks!

[328 Power 04]

So, what goes well on a lowered (not aggressively) M Coupe with stock roadstars? F/R?

Another wonderful list. The vendors should pay you for this advertising.

[BenFenner]

Damn, I forgot the ECS Tuning spacers. Got to add them ASAP.

As for which spacers are best for an M Coupe on stock roadstars, I'll let others chime in. While you wait, you can check out these threads too:
Wheel spacer search
Wheel spacer before and after
Wheel spacer advice

[Terry F.]

Wow, more excellent work. Most appreciated!!

Terry

[BMWBergy]

RallyRoad sells very nice spacers, and is one of the few vendors that offers a 10mm spacer with the extended hubcentric section. Using them would likely require some grinding of the outer surface of the wheel hub to allow the spacer to fit flush against the brake rotor hat.

http://rallyroad.net/content/10mm-spacers

Their spacers also have five (extra) threaded holes which allows removal of stubborn spacers by threading in a wheel bolt to press against the brake rotor hat.

[BenFenner]

I've added the Rally Road spacers. I'm thinking I will split the first category into two. One for the "flat" spacers, and one for the hub extended spacers.

Thanks for all the help and enthusiasm guys!

[robb1887]

Macht Schnell has good options too.

http://www.machtschnell.com/categories/wheels-accessories

[Z3 M Roadster]

This will make a good addition to the manifesto.

[PDP M]

otisincla.com formerly radusa.com -quality parts

[BenFenner]

It'll add the last two in the morning.

[paul4223]

FWIW: I've been very happy with Burger spacers. I'm running 12mm in front and 18mm rear on the Coupe with ASA AR1 18" wheels, and 18mm on the rear of our E34 Touring with M-Tech wheels.

Mr. Fenner, you are a complete madman, and I mean that as the highest compliment! Thanks for all your incredible work here.

[BenFenner]

Thanks Paul. I was doing the research for a purchase anyway, so I might as well save the next person the trouble.

I'm done splitting things into 4 categories (basically from thinner to thicker). The list is basically finished unless new info comes to light.

Now I just have to roll my rear fenders and try to decide between the 15, 16, 17.5, and 18mm options.

RallyRoad sells very nice spacers, and is one of the few vendors that offers a 10mm spacer with the extended hubcentric section.

It would appear a 10mm spacer with extended hub isn't as rare as once thought. I count 12 vendors with this option.
For others reading, it is a weird setup though. Careful measurements and consideration needs to be paid to clearances. It might even require cutting or grinding of the factory hub. Or because of your wheel choice it might be impossible.

[paul4223]

I probably should have mentioned that my car is on H+R Springs and Konis. So I'm not radically low. I got excellent advice from Jason at Burger Motorsports when choosing what size spacers to get. I am in no way affiliated with these guys!

[BenFenner]

Now I just have to roll my rear fenders and try to decide between the 15, 16, 17.5, and 18mm options.

Rolled the fenders and determined a whopping 27mm spacer would fit.
I'm going with a 20mm set because I don't want to do bolt-on spacers (already installed the studs with red loc-tite). I really wanted the Rogue spacers, but the largest they make is an 18mm so I went with 20mm VAC units and couldn't be happier.
I guess if I get real frisky I can sandwich one or two 3mm spacers in there to get 23 and 26mm setups.
Or I guess I could stack a ~15mm and a ~12mm spacer.



Edit: I'm not sure how I missed it, but I had BWSport spacers labeled as BimmerWorld spacers. Apparently BimmerWorld does have their own branded spacers so I corrected the name of the BWSport spacers and added the entries for BimmerWorld's spacers.

[BimmerBreaker]

Is there any reason to avoid windowed spacers due to strength or other considerations? Or is being "aggressively" windowed exclusively a benefit due to weight savings?

[BenFenner]

IMO as long as the wheel pad is sanely designed so the clamping forces all exist near the wheel bolts then the windowed spacers have no real-world downsides. The more material that can be removed, the better.
And not only do they save weight, but they also limit the tendency for the spacer to stick to the rotor or wheel.

[BenFenner]

I've read more bad reviews of Turner Motorsports than one should ever have to. I've made note of their questionable customer service in the table.

[Tib]

Adaptec Speedware

3, 5

No

Pkg Dependent

No

No

http://www.motorsport-tech.com/adaptec/car/bmw_s

The web page can be obnoxious, click the "Home" link to get it out of its funk

They offer 3, 5, 10, 12, 15, 20, 25, 30mm

I just ordered 2 10mm and 2 15mm type 2 spacers with bolts. from Lenny

Please be aware that even though all of the pictures on this site show 2 spacers the pricing is each, they are not sold in sets....

When Lenny (the owner) went to ship my order he seen that it was for 1 10mm and 1 15mm spacer kit and called me to make sure that that was what I really wanted shipped to me. I am very glad he did, as I would of been burnt and unable to install my ST coilovers again!

"The web page can be obnoxious" it is also misleading, if your kit is shown as pairs it should be priced as pairs and sell as pairs.

Being under the gun I needed them and I needed them shipped now so we worked out a deal. (just under $50 a wheel)

I can not rate the spacer as I do not have them yet, but its a 2 star web site and 4.5 stars for customer service.

Lenny claims that he is undergoing a remake on the site to correct the misleading images.

[BenFenner]

Adaptec Speedware

3, 5

No

Pkg Dependent

No

No

http://www.motorsport-tech.com/adaptec/car/bmw_s

The web page can be obnoxious, click the "Home" link to get it out of its funk

They offer 3, 5, 10, 12, 15, 20, 25, 30mm

I'm sorry if my tables aren't easy to follow, but there is a header to each table describing which type of spacer each table covers. The tables are ordered in thickness, from thinnest to thickest spacers. The first large table ONLY covers thin spacers with no hub extensions. This is why only 3mm and 5mm spacers are listed. If you go down to the 3rd table you will find spacers with hub extensions where you will find most of the rest of the offerings from Adaptec Speedware listed. And then finally in the last table you will see their offerings for bolt-on spacers.

If there's a way I can make this clearer, please let me know. Maybe I need to make the header text larger, and maybe center it...

Please be aware that even though all of the pictures on this site show 2 spacers the pricing is each, they are not sold in sets....

I will make note of this, thanks.

"The web page can be obnoxious" it is also misleading, if your kit is shown as pairs it should be priced as pairs and sell as pairs.

The web page doesn't seem to be coded well and can display very odd behavior, and look unreadable in some cases. This is what I meant by obnoxious... I should describe the problem better. Again, I will add the note about the misleading images.

[Tib]

I'm sorry if my tables aren't easy to follow, but there is a header to each table describing which type of spacer each table covers.

Ben

It all started with the need to change the rear subframe bushings, and while I am there I might as well change the RTAB's, oh look at the RSM's then my goodness these shocks and struts are 15 years old and shot, I might as well put st coilovers on too. new front lower control arm bushings and slotted rotors and new pads. Then I find that OMG I need spacers for the rims and tires to go back on my car with the coilovers...

being 30x over budget and close to a divorce if the wife finds out, and overloaded with bad websites, miss-information.... your tables threads and posts were my only life line to sanity! They are perfect.

I should describe the problem better.

I don't know how you could explain it better. The site doesn't always put into the cart what you click, I was not looking at VW spacers but they showed up in my cart. If you delete a item it clears the entire cart. The site becomes unresponsive and unreadable.

I will add the note about the misleading images.

Thank you

[BenFenner]

Oh wow, I'll make a better note about the web site. Sorry you had such trouble. Hopefully you can hide the bill from the wife.

[esses]

Came across these looking for parts for my other car. I didn't even know about Sonic Tuning or Renn Motorsport (not to be confused with Rennsport)

Anyway the spacers look pretty well optioned, and dare I say very similar to some others. None the less, the price from Sonic Tuning is VERY competitive as it also includes bolts right now (not sure if that will always be the case). Kind of wish I'd seen this earlier. Would have saved me a few bones.

Windowed
Extended Hardware Included
Pry Provisions
Labeled


http://www.sonictuning.com/vehicle/m...1998-2001.html

[btz461]

Down here in the Antipodes we have had fast, efficient, professional service at reasonable cost (including courier fees) from Turner Motorsports. In fact quite often better than the dealer.

And we find the staff courteous and extremely knowledgeable as well.

Other than being a frequent shopper we have no affiliation.....