Quick answer: For Mercedes-AMG and G-Class forged wheels, 5×112 is often only the first line of the fitment brief. Confirm the exact chassis generation, year, trim, axle, brake package, center bore, wheel width, offset, lug-seat geometry, load requirement and TPMS hardware before approving a drawing. AMG performance cars and G-Class SUVs can share a nominal bolt pattern while needing very different sections, offsets and load targets.
Do not order a “Mercedes 5×112 wheel” as a universal SKU. The correct procurement unit is a controlled vehicle-and-axle fitment tied to a drawing revision.
Mercedes-AMG and G-Class Fitment Priorities
| Application group | Primary engineering concern | Buyer should provide |
|---|---|---|
| AMG sedan/coupe | Large brake package, front/rear width strategy, spoke-to-caliper clearance and stance | Chassis code, brake option, OE wheel/tire reference, desired front and rear setup |
| AMG SUV | Vehicle load, wheel width/offset, brake package and tire envelope | Exact model/trim, axle data, current tire, intended road use and load target |
| G-Class | SUV load, hub/mounting interface, caliper envelope, fender position and tire use | Generation, trim, brake package, OE reference, intended on-road/off-road use |
| Widebody or modified build | New fender and suspension envelope rather than stock dimensions | Measured clearances, suspension changes, body kit dimensions and alignment target |
Why 5×112 Is Not a Complete Specification
PCD only describes fastener count and pitch circle. It does not define whether the wheel centers correctly on the hub, how the mounting face positions the rim, which bolt seat is used or whether the spokes clear the brake caliper. Use the PCD calculator for planning, but lock production only after every mounting-interface dimension is documented.
- Center bore: verify the exact chassis and tolerance; do not assume all 5×112 Mercedes applications share one bore.
- Wheel bolt and seat: confirm thread, seat profile, length and any original hardware constraints.
- Offset: read ET together with width and axle position. A wider rim with the same ET moves both inner and outer edges.
- Brake clearance: check radial inner-barrel clearance and axial/spoke-back clearance using the real caliper package.
- Load: establish the vehicle/axle application and required wheel documentation before design freeze.
AMG Big-Brake Clearance: What the Drawing Must Show
Brake clearance is a three-dimensional problem. Disc diameter alone cannot approve the wheel. The engineer needs the caliper radial envelope, its outward projection from the hub face and the spoke back profile. A wheel may clear the disc yet contact the caliper body near a spoke shoulder.
- Identify whether the car has the standard, performance or optional brake package.
- Supply an OEM brake code, verified brake template, scan or controlled measurements.
- Check the inner barrel at the closest radial point.
- Check spoke-back clearance throughout rotation, not only at one face view.
- Confirm wheel weights, clip-on components and valve/TPMS do not enter the clearance envelope.
- Record the approved clearance method in the project file.
Offset, Concavity and Staggered Fitment
A more aggressive offset can create outer poke, while a higher positive offset can move the wheel toward suspension and brake components. Concavity is also constrained by mounting-pad position and caliper space. The deepest-looking spoke profile is not automatically available on the front axle, where brake clearance is often tighter.
Use the wheel offset calculator to compare inner and outer position changes. For a staggered set, approve separate front and rear drawings and confirm tire rolling dimensions within the vehicle and tire suppliers’ requirements.
G-Class: Treat Load and Use as First-Class Inputs
A G-Class project should not be copied from a passenger-car AMG brief. Ask whether the vehicle will carry accessories, tow, travel off road or use a larger tire. The wheel load target and test/document scope should be chosen from the exact vehicle and intended use—not from a generic “SUV wheel” label.
| Buyer goal | Useful design direction | Key constraint to resolve |
|---|---|---|
| OEM-plus luxury stance | Controlled offset, restrained concavity and premium finish | Fender position, load and brake clearance |
| Large-diameter street build | Visual diameter and finish coordination | Tire load, ride, brake and body clearance |
| Off-road-oriented build | Appropriate diameter/tire envelope and robust finish plan | Vehicle load, bead-seat design, terrain and local-road requirements |
| Private-label range | A small number of validated chassis-specific SKUs | Do not market one 5×112 wheel as universal Mercedes fitment |
Mercedes Forged Wheel RFQ Checklist
- Make, model, year, trim and chassis/platform code
- VIN-derived option or brake-package information where available
- Front/rear OE wheel and tire specifications
- Target diameter, width, ET and stance
- PCD, center bore, bolt thread/seat and TPMS requirement
- Brake template, caliper model or measured envelope
- Desired construction, spoke direction, concavity and finish
- Load/test/document requirements, quantity, branding and destination
Browse the vehicle fitment projects and the complete offset, PCD and center-bore guide before preparing the RFQ.
Frequently Asked Questions
Do all Mercedes-AMG and G-Class models use the same 5×112 fitment?
No. Even where the nominal PCD is 5×112, generations and trims can differ in center bore, wheel size, ET, load, bolt hardware and brake clearance.
Can the front and rear wheels use the same concavity?
Sometimes, but not by assumption. Front brake clearance and different widths or offsets may require distinct profiles. Approve each axle drawing.
What is the safest way to confirm AMG brake clearance?
Use controlled vehicle data plus a verified brake template, scan or caliper model. Confirm both inner-barrel and spoke-back clearance on the production drawing.
Mercedes-Benz, Mercedes-AMG and G-Class are trademarks of their respective owner. This independent sourcing guide does not imply affiliation or vehicle-manufacturer approval.
Request a Mercedes Fitment Review
Send the exact chassis, year, trim, brake package, OE wheel/tire data, target size and ET, design reference, finish, quantity and destination. We will structure the project by front and rear fitment before quotation.