Both platforms often use 5x112. Center bore, offset windows and catalog photography still differ. How XBORUL quotes BMW and Mercedes as separate drawings.
Buyers search “5×112 forged wheels” and expect one mold to cover BMW and Mercedes. PCD can match. Center bore, offset window, caliper pack and cap geometry often do not. XBORUL quotes them as related programs, not as one SKU with two captions.
Direct answer
Use a BMW forged drawing for BMW / M-class books and a Mercedes forged drawing for Mercedes / AMG-class books — even when both say 5×112. Lock CB and ET on each. Sample MOQ is often 4 pieces per design.
What is actually shared
- Bolt circle language: many performance catalogs in this class start at 5×112
- Structures: 1-piece, 2-piece and 3-piece are all available — 1-piece, 2-piece
- Finish palette: chrome, brushed, gloss/matte, custom color — finishes
- Commercial path: drawing → sample → bulk. MOQ 4 to container
What is not shared
Center bore differs by generation and brand. A hub-centric BMW sample will not automatically be hub-centric on a Mercedes hub of the same PCD. Rings can adapt a larger bore down. They cannot make a small bore larger. If you want one face in both channels, we still issue two CB callouts or two SKUs.
Offset windows differ because arch, fender and OEM-plus vs stance intent differ. A BMW M-class aggressive ET can sit illegal or ugly on a Mercedes sedan of the same diameter.
Calipers on AMG and M cars are not the same casting. If the buyer runs big brakes, send photos. See caliper clearance.
Caps and logos are brand-owned. Private label is fine — OEM / private label — but do not ship a BMW-shaped cap onto a Mercedes catalog without a new cap tool conversation.
How we quote a dual-channel 5×112 book
- Lock two vehicle lists (BMW generations vs Mercedes generations) or two CB/ET tables
- Decide whether the face is shared and only the mounting geometry changes
- Sample the harder fitment first (usually the big-brake / low-offset side)
- Release the second CB/ET as a related SKU, same finish, new drawing number
How to read those PDFs: how to read a drawing.
Mistakes that waste a sample slot
- “5×112 universal” on the website with one CB
- Using a spacer to force a Mercedes onto a BMW sample and calling it approved
- Mixing load / street claims across both brands without asking about papers per SKU
RFQ template
Brand + generation (or CB), diameter × width, ET target, finish, quantity, whether it is street OEM-plus or stance. Hub of all platforms: Fitment. Quote: Contact. Typical reply within 3 hours on business days.
Worked example
A European brand wants one concave 20″ face in brushed silver for both BMW 3-series and Mercedes C-class books. We can share the face CNC. We will not share one CB. Sample sequence: BMW 5×112 + that CB first (often the tighter caliper), then Mercedes CB as SKU-B with the same finish recipe. Caps: two inners or a private-label cap that fits both hub geometries — test on sample, do not assume. Branding: center cap and carton.
If the Mercedes book is AMG-wide and the BMW book is OEM-plus, ET will split too. That is two related SKUs, still cheaper than two unrelated faces.
Catalog copy that does not lie
Write “5×112 — confirm CB / ET for BMW or Mercedes generation,” not “fits all 5×112.” Fitment hub copy on this site follows the same rule: Fitment. Search engines and dealers both punish a universal claim that needs spacers.
FAQ
Is 5×112 only BMW and Mercedes?
No. Other European platforms use it. The point is: PCD match ≠ SKU match. Send the car.
Can we use hub rings to merge SKUs?
Sometimes, when the bore is larger and the ring is specified on the drawing. Never as a surprise in the dealer box.
Do we need two samples?
If CB or inner caliper differs, yes — or sample the harder one and paper-check the second. We will say which.
Finish can stay identical?
Yes, if the recipe is locked. Finish note.
