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.
OE on the BMW 3 Series (F30) M-Sport front and various premium-sedan 19" sport packages. Load index 89Y or 93Y reinforced. Low 90 mm sidewall on a 19" rim — pothole avoidance is a daily-driving skill at this fitment.
Low-profile sizes in this group prioritize steering response and lateral grip over sidewall protection from pothole impacts. Curb-rash on the rim and pinched sidewalls are the dominant failure modes; insurance-claim data shows these sizes register two to three times more wheel damage than 50+ aspect ratios. Plan for a spare set of rims if the route includes broken urban pavement.
| Tire Code | 225/40R19 |
| Section Width | 225 mm |
| Aspect Ratio | 40% |
| Rim Diameter | 19" |
| Sidewall Height | 90.0 mm |
| Overall Diameter | 662.6 mm / 26.09" |
| Circumference | 2081.6 mm / 81.95" |
| Revolutions per km | 480.4 |
| Revolutions per mile | 773.1 |
| Tire Code | OD (mm) | Δ mm | Δ % | 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 |