Thread: BMW Z3 wheel spacer options (all inclusive).

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/billet-wheel-spacers-sets-of-2-bmw-725mm-hub-p70.aspx	For optional hardware inclusion, navigate to their "wheel spacer kits" section
BimmerWorld	5	Aggressively	Not Included	Full shelf	Yes	BimmerWorld Wheel Spacers ? BimmerWorld Online Store	The description claims a 5mm size, but the drop-down menu doesn't show the option. Call them?
Core4 Motorsports	5	Aggressively	Not Included	Shelf slots	Yes	BMW Wheel Spacers - 5x120	N/A
Future Classic	5	Aggressively	Optional	Shelf slots	Yes	Future Classic - BMW 5x120 Wheel Spacers	Has provisions for retaining bolt, comes with anti-seize
Turner Motorsport	5	Aggressively	Optional	Shelf slots	Yes	BMW Turner Motorsport Wheel Spacers | Turner Motorsport	Questionable customer service. Check their reviews.
Macht Schnell	3, 5	Aggressively	Included	Shelf slots	Yes	Macht Schnell - Home Page	N/A
Apex	3, 5	Aggressively	Included	Shelf slots	Yes	Apex Race Parts	These appear to be re-branded Macht Schnell spacers
BWSport	5	Yes	Optional	Full chamfer	Yes	http://store.bimmerworld.com/bwsport-wheel-spacers-p1296.aspx	N/A
Motorsport Hardware	5, 10	Some	Optional	Some	Some	5x120 (72.56cb) - Motorsport Hardware	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.
UUC	5	Yes	Not Included	No	Yes	WHEEL SPACERS (PAIR) for BMW - 5X120, 72.6mm bore ? UUC Motorwerks Online Store	N/A
ECS Tuning	5	Yes	Optional	No	Some	BMW Z3 2.3 M52 2.5L Wheels Spacers - ECS Tuning	Web site images only show size labeling for some sizes, but they might be outdated images?
42 Draft Designs	3, 5, 8, 10	Yes	Not Included	No	No	BMW 5x120 Hubcentric Wheel Spacers - 42 Draft Design	N/A
Velocity Motoring (VMR Wheels)	3, 5	Yes	Included	No	?	https://www.bimmian.com/BMW-Wheel-Spacers-for-BMW-E36-3-Series	Spacers are labeled with bolt pattern, so they might have additional labeling?
H&R	3, 5	Yes	Pkg Dependent	No	No	trakplus.com	Spacers are labeled with part numbers and other info, but not directly the size
Mechünik	3, 5	Yes	Included	No	No	Mechunik Black Wheel Spacers For E36 - BMW 3 Series and M3 - 1992-98 From Bimmian Automotive	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-spacers/bmw-wheel-spacers.html	N/A
Eibach	5	Yes	Included	No	?	Wheel Spacers | Custom Lowering Springs, Shocks, & Suspension Kits | Eibach Springs	Spacers are labeled but I'm not sure with what
Vorshlag	5	Some	Not Included	No	No	BMW Z3 Wheel Studs and Spacers - High Performance and Racing Parts - Vorshlag LLC	5mm size almost certainly made by Racemax
Racemax	5	No	Optional	No	No	Racemax BMW Wheel Spacers	Thicker spacers held in place with extended brake rotor retaining bolt
Adaptec Speedware	3, 5	No	Pkg Dependent	No	No	Wheel Adapters, Wheel Spacers, Hub Centric Rings | Motorsport Tech	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	?	BMW	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/billet-wheel-spacers-sets-of-2-bmw-725mm-hub-p70.aspx and http://store.vacmotorsports.com/vac---wheel-hub-extenders-for-use-with-5--8-mm-spacers-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	Rogue Engineering Wheel Spacers (Pair) - Rogue Engineering specializes in high performance upgrades for BMWs.	The hub extensions fit on the front hubs only.
Turner Motorsport	7.5, 10	Aggressively	Optional	Shelf slots	Yes	BMW Turner Motorsport Wheel Spacers | Turner Motorsport	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/billet-wheel-spacers-sets-of-2-bmw-725mm-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	Rogue Engineering Wheel Spacers (Pair) - Rogue Engineering specializes in high performance upgrades for BMWs.	N/A
BimmerWorld	10, 12, 15, 20	Aggressively	Not Included	Full shelf	Yes	BimmerWorld Wheel Spacers ? BimmerWorld Online Store	N/A
Future Classic	10, 12, 15, 18	Aggressively	Optional	Shelf slots	Yes	Future Classic - BMW 5x120 Wheel Spacers	Has provisions for retaining bolt, comes with anti-seize
Turner Motorsport	10, 12.5, 15, 17.5, 20	Aggressively	Optional	Shelf slots	Yes	BMW Turner Motorsport Wheel Spacers | Turner Motorsport	Questionable customer service. Check their reviews.
Macht Schnell	10, 12, 15, 18, 20	Aggressively	Included	Shelf slots	Yes	Macht Schnell - Wheel Accessories	N/A
Apex	10, 12, 15, 18, 20	Aggressively	Included	Shelf slots	Yes	Apex Race Parts	These appear to be re-branded Macht Schnell spacers
Core4 Motorsports	12, 15, 20	Aggressively	Not Included	Shelf slots	Yes	BMW Wheel Spacers - 5x120	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	BMW Wheel Spacers - Burger Motorsports, Inc. | JB4 | Burger Motorsports, Inc. | JB4 | http://BurgerTuning.com	N/A
BWSport	12, 20	Yes	Optional	Full chamfer	Yes	http://store.bimmerworld.com/bwsport-wheel-spacers-p1296.aspx	N/A
Motorsport Hardware	12, 15, 17, 20	Some	Optional	Some	Some	5x120 (72.56cb) - Motorsport Hardware	Company owner Ryan Castro (kalib0y) is a forum member.
UUC	12, 20	Yes	Not Included	No	Yes	WHEEL SPACERS (PAIR) for BMW - 5X120, 72.6mm bore ? UUC Motorwerks Online Store	N/A
ECS Tuning	10, 12.5, 15, 17.5, 20	Yes	Optional	No	Some	BMW Z3 2.3 M52 2.5L Wheels Spacers - ECS Tuning	Web site images only show size labeling for some sizes, but they might be outdated images?
42 Draft Designs	5, 8, 10, 13, 15, 18, 20, 25	Yes	Not Included	No	No	BMW 5x120 Wheel & Hubcentric Wheel Spacers - 42 Draft Design	N/A
Velocity Motoring (VMR Wheels)	10, 12, 15, 20, 25	Yes	Included	No	?	https://www.bimmian.com/BMW-Wheel-Spacers-for-BMW-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	trakplus.com	Spacers are labeled with part numbers and other info, but not directly the size
Mechünik	12, 15, 25	Yes	Included	No	No	Mechunik Black Wheel Spacers For E36 - BMW 3 Series and M3 - 1992-98 From Bimmian Automotive	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-spacers/bmw-wheel-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	?	Wheel Spacers | Custom Lowering Springs, Shocks, & Suspension Kits | Eibach Springs	Spacers are labeled but I'm not sure with what
Vorshlag	12, 15, 20	Some	Not Included	No	No	BMW Z3 Wheel Studs and Spacers - High Performance and Racing Parts - Vorshlag LLC	12 and 20mm sizes windowed to save weight and are probably made by H&R or Eibach | 15mm size almost certainly made by Racemax
Racemax	12, 16, 20	No	Optional	No	No	Racemax BMW Wheel Spacers	Thicker spacers held in place with extended brake rotor retaining bolt
Adaptec Speedware	10, 12, 15, 20, 25	No	Pkg Dependent	No	No	Wheel Adapters, Wheel Spacers, Hub Centric Rings | Motorsport Tech	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	?	BMW	Images not representative, spec typos abound
Wheel Mate (Mackin Industries)	10, 13, 20	No	Not Included	No	No	HorsepowerFreaks - HorsepowerFreaks	You may want to double-check if ordering a 10mm spacer that it does have a hub extension.
Ireland Engineering	15	?	?	?	?	5x120 - 15mm Hub-Centric Wheel Spacer at Ireland Engineering | Performance BMW Parts and more.	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	?	Wheel Adapters, Wheel Spacers, Hub Centric Rings | Motorsport Tech	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	trakplus.com	Spacers are labeled with part numbers and other info, but not directly the size
Eibach	20, 25, 30	No	?	Wheel Spacers | Custom Lowering Springs, Shocks, & Suspension Kits | Eibach Springs	Spacers are labeled but I'm not sure with what

I've updated the list with Apex's offerings, which appear to simply be re-branded Macht Schnell units.

Still love this resource.

Motorsport Hardware are offering newer designs with a few better features, so I've updated the lists to reflect that.

I've also added the 42 Draft Designs options. (Better known in the VAG community.)

I've added Future Classic wheel spacers to the list.

Note to self: add these.
https://shop.bimmerbum.com/products?keywords=Traklite