2019–present · hatchback
The W177 A45 and A45 S use a square setup, with the same wheel and tyre size on every corner. Most owners keep the 19-inch diameter and look for lighter forged wheels with an offset close to factory. Eighteen-inch track sets exist, but the large front brakes mean each design has to be checked for clearance.
5x112 bolt pattern · 66.6 mm centre bore · Stock wheels: 19 × 8.5, 18 × 8.5 inch · Stock tyres: 245/35 R19, 245/40 R18
Updated 2026-10-04 · High source confidence. Check your exact trim and market. How we check specs
| Specification | Value |
|---|---|
| Bolt pattern | |
| Stock tyre sizes | |
| Centre bore | 66.6 mm |
| Fastener and thread | Wheel bolt, M14x1.5 |
| Tightening torque | 130 Nm (confirm in your handbook) |
Factory options vary by trim and market. Match your car to the row below and check its tyre placard before using it as a baseline.
| Trim | Axle | Wheel | Tyre |
|---|---|---|---|
| A45 S 4MATIC+, 19-inch | Front and rear | 19 × 8.5 inch, ET46 | 245/35 R19 |
| A45 4MATIC+ (non-S, selected markets), 18-inch | Front and rear | 18 × 8.5 inch, ET46 | 245/40 R18 |
Read these before choosing wheels for the A45 AMG: they explain the offset, fitment and hub numbers in this guide.
Starting points for a build. Read the notes with each setup, especially if your car is lowered or has different brakes.
BBS Japan lists several 19x8.5 ET43 designs for the A45 S as standard sizes rather than tuner sizes. It keeps the factory tyre and sits about 3 mm further out than the original wheel.
BBS lists a 19x9 ET37 RE-V for the A45 S as a tuner size, so arch or body work may be needed depending on tyre and ride height. A gallery A45 on 19x9 forged wheels runs the factory 245/35 R19 tyre.
BBS lists one 18x8.5 ET35 design for the A45 S as a tuner size, and a gallery A45 on 18-inch Work wheels runs 245/40 R18. Many 18-inch wheels will not clear the front calipers, so confirm the exact design first.
Check the exact setup
There is no confirmed range for this car yet. Compare a known wheel with your proposed size and measure both sides.
Measure before ordering
A maximum width has not been confirmed. Tyre shape, ride height and alignment all change the available space.
These figures belong to the setups described here. Combining the widest wheel with either end of the offset range does not guarantee a safe fit. For how ET moves the wheel in and out, read wheel offset explained; for how far the tyre can sit out, see flush, poke and tucked fitment.
Upload a photo and start with a look that suits the A45 AMG. Try the wheels, colour and stance before you spend on parts.
An AI preview shows the look. It cannot verify physical fitment.
These tools start with the A45 S 4MATIC+, 19-inch front size. Choose your own trim or axle in the calculator if it differs.
5x112 with M14x1.5 wheel bolts. Databases list a 66.6 mm centre bore, and the bolts are tightened to 130 Nm.
19x8.5 ET46 on all four corners, with 245/35 R19 tyres.
Only certain designs. BBS lists an 18x8.5 ET35 wheel, and Mercedes sells an 8x18 ET48.5 winter wheel for the A35 and A45. Check the specific wheel against your brakes before buying.
No. Factory A45 and A45 S packages use the same wheel and tyre size front and rear.
130 Nm, which matches the figure Mercedes gives for the W177 A-Class range.
Factory tyre (tire) sizes for the 2019–present Mercedes-Benz A45 AMG W177 are 245/35 R19 and 245/40 R18, depending on trim. Your tyre placard shows the size for your car.
Factory wheels are 19 × 8.5 inch and 18 × 8.5 inch, depending on trim. The stock table lists the offset for each.
66.6 mm. Aftermarket wheels with a larger bore need hub-centric rings sized to it.
This guide is a starting point, not a fitment guarantee. Specs can differ by market, trim and previous modifications. Confirm all sizes, clearances and fastener requirements with a qualified wheel and tyre professional before buying or fitting parts.
More guides from Mercedes-Benz or cars with the same bolt pattern. A matching pattern alone does not make a wheel interchangeable.