2020 Mercedes-Benz A-Class Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2020 Mercedes-Benz A-Class, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x112 |
|---|---|
| Lug Nut / Bolt Size | B 14x1.50 |
| Center Bore (CB) | 66.5 mm |
| Offset (ET) | 45 |
| Torque Specs | 100 ft-lbs (135 Nm) |
2020 A-Class — Year-Specific Fitment Context
The 2020 Mercedes-Benz A-Class is in year 2 of 4 using the 5x112 pattern (2019–2022). Wheels from any 2019–2022 Mercedes-Benz A-Class are cross-compatible with the 2020 model.
Mercedes-Benz A-Class Bolt Pattern by Year
The table below shows how the A-Class's wheel specifications have changed over the years. The 2020 model year is highlighted.
5x112 Pattern Context
This bolt pattern appears on 1490 vehicles in our current database and is considered common.
Examples of other vehicles using 5x112:
Expert Buying Guide for 2020 Mercedes-Benz A-Class
For your 2020 Mercedes-Benz A-Class, the 5x112 bolt pattern and 66.5mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 66.6mm or 73.1mm), requiring hub-centric rings to prevent vibrations and ensure proper load transfer. The factory offset is 45mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (14x1.50) and seat type—Mercedes uses ball seats, not conical. Using incorrect lug nuts can lead to wheel loosening. Stick to OEM or verified aftermarket specs for safety.
Historical Fitment Data Reference
In our dataset, Mercedes-Benz A-Class appears from 2019 to 2022 (4 model years). Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 95.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Avoid using universal fit wheels without hub rings; vibrations and stress on studs can occur.
- ✅ Check inner clearance for aftermarket wheels; the A-Class has tight front strut clearance.
- ⚠️ Confirm bolt pattern carefully. 5x112 is often confused with other common 5-lug patterns.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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2020 Mercedes-Benz A-Class — Frequently Asked Questions
What is the bolt pattern for a 2020 Mercedes-Benz A-Class?
The 2020 Mercedes-Benz A-Class uses a 5x112 bolt pattern (also called lug pattern or PCD). The center bore is 66.5mm and the offset is 45mm.
What other years of Mercedes-Benz A-Class have the same bolt pattern as the 2020?
The Mercedes-Benz A-Class uses the 5x112 pattern from 2019 through 2022. Wheels from any of these model years are dimensionally compatible with the 2020, provided the offset and center bore also match.
What is the PCD for a 2020 Mercedes-Benz A-Class?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2020 A-Class, the PCD is 5x112.
Can I use spacers on my 2020 Mercedes-Benz A-Class?
Yes, but ensure the wheel spacers match the 5x112 bolt pattern and 66.5mm center bore. Also verify that you have enough thread engagement for your B 14x1.50 hardware.
What is the center bore of a 2020 Mercedes-Benz A-Class?
The factory center bore (hub bore) for the 2020 Mercedes-Benz A-Class is 66.5mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What lug nut size does the 2020 Mercedes-Benz A-Class use?
The 2020 Mercedes-Benz A-Class uses B 14x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
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