2021 Mercedes-Benz GLA Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Mercedes-Benz GLA wheels? This page gives the 2021 Mercedes-Benz GLA bolt pattern (5x112), centre bore, factory rim size and the offset range for aftermarket and forged Mercedes-Benz GLA rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2021 Mercedes-Benz GLA uses a 5x112 bolt pattern with a 66.6 mm centre bore and M14x1.5 lug bolts. Factory wheels: 18x7.5J, front and rear. For aftermarket wheels, 19x8.5J ET35 sits flush and 20x9.0J ET32 is the most aggressive fit.
Forged wheels for the 2021 Mercedes-Benz GLA — drilled 5x112 with a 66.6 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Mercedes-Benz GLA (2021): 5x112 bolt pattern, 66.6mm center bore. Factory wheels: 18x7.5J F/R. Reference fitment ranges.
Bolt Pattern5x112
Wheel Bolt/NutM14x1.5 Bolt
Center Bore66.6mm
Wheel Load Rating800–950 kg/wheel (Crossover segment reference)
Year2021
CategoryCrossover
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 18x7.5J F/R |
| Flush Fitment | 19x8.5J at ET35 offset |
| Maximum Aggressive | 20x9.0J at ET32 offset |
Forged Wheel Designs for the Mercedes-Benz GLA
Every design below is forged to order, so it can be machined to the Mercedes-Benz GLA's 5x112 bolt pattern and 66.6 mm center bore, with the width and offset calculated for your setup.
Brabus-Style Monoblock Z Gloss Black Multi-Spoke Forged Wheels
Replica · Gloss Black
Mercedes-Benz OEM-Style Gloss Black Machined Face Forged Wheels
Monoblock · Gloss Black
Mercedes-Benz OEM-Style Gloss Black Cross-Spoke Mesh Forged Wheels
Monoblock · Gloss Black
Bronze Mesh Concave Forged Wheels
Concave · Bronze
Brushed Silver Twisted 5-Spoke Forged Wheels
Monoblock · Brushed Silver
Gold Black-Ring Beadlock Forged Wheels
Off-Road Beadlock · Gold / Black
Gloss Black Deep Concave Multi-Spoke Forged Wheels
Concave · Gloss Black
How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
The Mercedes-Benz GLA's factory suspension tuning already accounts for a specific unsprung mass target. Forged construction lets ANKUSI match the factory strength spec while keeping rotational weight down, which is where the real handling benefit comes from on a taller, heavier SUV platform.
The Mercedes-Benz GLA runs a 5x112 bolt pattern, 66.6mm center bore, and a 18x7.5J, front and rear, wheel from the factory. Our Flush Fitment reference is 19x8.5J ET35, which tucks the tire under the fender lip on a stock-height Mercedes-Benz GLA. Our Maximum Aggressive reference is 20x9.0J ET32 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Mercedes-Benz GLA OE Wheel Specs
The 2021 Mercedes-Benz GLA (Crossover) uses a 5x112 bolt pattern with a 66.6mm center bore. Factory wheels are 18x7.5J F/R.
Why the factory spec works for most owners:
- Supports the vehicle's curb weight and load capacity
- Preserves ground clearance for everyday and light off-road use
- Balances ride comfort with cargo and passenger stability
- Maintains clearance for the factory suspension travel and brake package
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Mercedes-Benz GLA (2021) we drill the 5x112 pattern and cut the centre bore to 66.6mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 18x7.5J ET43 → ~5.94″ backspacing
- Flush: 19x8.5J ET35 → ~6.13″ backspacing
- Max: 20x9.0J ET32 → ~6.26″ backspacing
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Mercedes-Benz spec, or want a wheel built to a custom offset for your Mercedes-Benz GLA? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Mercedes-Benz GLA: Specs by Model Year
Vehicles With the Same Hub as the Mercedes-Benz GLA (5x112, 66.6 mm Bore)
In our database, 822 other vehicle entries from 21 makes use exactly the same 5x112 bolt pattern and 66.6 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x112 is used by 21.6% of the vehicle pages in our English fitment guide (1,407 of 6,503); 58.6% of those also use a 66.6 mm center bore.
Hub-Centric Rings for a 66.6 mm Center Bore
A wheel with a center bore larger than 66.6 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 67.1 mm | 67.1 → 66.6 mm |
| 70.1 mm | 70.1 → 66.6 mm |
| 70.5 mm | 70.5 → 66.6 mm |
| 71.6 mm | 71.6 → 66.6 mm |
| 73.1 mm | 73.1 → 66.6 mm |
ANKUSI forged wheels are bored to exactly 66.6 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Mercedes-Benz GLA use?
The 2021 Mercedes-Benz GLA uses a 5x112 bolt pattern.
How many lug bolts does the Mercedes-Benz GLA use?
The Mercedes-Benz GLA uses a 5-lug bolt pattern (5x112), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Mercedes-Benz GLA?
The Mercedes-Benz GLA's center bore is 66.6mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the Mercedes-Benz GLA?
Factory wheels on the Mercedes-Benz GLA are 18x7.5J F/R.
What is the biggest wheel size I can fit on my Mercedes-Benz GLA without rubbing?
The most aggressive fitment we recommend without fender work is 20x9.0J at ET32 offset. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the Mercedes-Benz GLA?
For a flush look with minimal to no rubbing, we recommend 19x8.5J at ET35 offset as a starting point on a stock or mildly lowered Mercedes-Benz GLA.
Do I need wheel spacers for my Mercedes-Benz GLA?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Mercedes-Benz GLA?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 6.13" of backspacing.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Mercedes-Benz GLA?
The Mercedes-Benz GLA runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M14x1.5, ball-seat lug bolt.
Factory Torque Spec: 150 Nm (110 ft-lb). SUV/crossover platforms (GLC/ML/GLE/GL/GLS and similar) generally use the longer 45mm bolt at this spec.
TPMS: TPMS (Tire Pressure Monitoring System) has been federally mandated on all new light vehicles sold in the US since the 2008 model year. If your wheels use OE-style sensors, have them transferred or cloned to the new wheels at installation.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 18x7.5 wheels · 18 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.