About the 225/40R19 Tire

The 225/40R19 is a common tire size for performance and sports cars such as BMW 3 Series, Volkswagen GTI, and Audi A4.

With a 90.0 mm sidewall (40% aspect ratio), this low-profile tire delivers sharp steering response and precise cornering grip, though the ride feels firmer over rough surfaces.

Compared to the baseline 245/40R19, this tire's overall diameter differs by -2.4% — a speedometer calibrated for 245/40R19 would read 102.4 km/h at an actual 100 km/h.

When replacing, verify that your wheel well can accommodate the 662.6 mm overall diameter. Keep speedometer deviation within ±3% for safety and legal compliance.

Tire Measurements

Tire Code225/40R19
Section Width225 mm
Aspect Ratio40%
Rim Diameter19"
Sidewall Height90.0 mm
Overall Diameter662.6 mm / 26.09"
Circumference2081.6 mm / 81.95"
Revolutions per km480.4
Revolutions per mile773.1

Adjacent Size Comparison

Tire Code OD (mm)Δ mmΔ % Speedo at 100 km/h
225/40R18 637.2 -25.4 -3.8% 104.0
225/40R19 (current) 662.6 — — 100.0
235/40R19 670.6 +8.0 +1.2% 98.8
245/40R19 678.6 +16.0 +2.4% 97.6

Frequently Asked Questions

What is the overall diameter of a 225/40R19 tire?
The overall diameter is 662.6 mm (26.09 in), with a 90.0 mm sidewall on a 19-inch rim.
How many revolutions per kilometer does a 225/40R19 tire make?
It makes 480.4 revolutions per kilometer, with a circumference of 2081.6 mm.
What vehicles commonly use 225/40R19 tires?
The 225/40R19 is standard OEM equipment on performance and sports cars such as BMW 3 Series, Volkswagen GTI, and Audi A4. Always check your owner's manual or door placard before switching sizes.

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