235/40R19
A 235/40R19 tire is 26.40 inches tall and 9.3 inches wide, with a 3.70-inch sidewall, mounted on a 19-inch wheel.
Common fitments: Model 3 Performance, Giulia
Overall diameter
26.40″
671 mm
Sidewall height
3.70″
94.0 mm
Tread width
235 mm
9.3″
Circumference
82.94″
6.9 ft
Revs per mile
764
475 per km
Wheel diameter
19″
aspect ratio 40%
Cross-section
- Overall diameter
- 26.40″
- Sidewall (each side)
- 3.70″
- Wheel
- 19″
235/40R19 in inches and millimeters
Every dimension of a 235/40R19, converted both ways. Calculated from the size code, accurate to about 1%.
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter (height) | 26.40″ | 671 mm |
| Tread width | 9.3″ | 235 mm |
| Sidewall height | 3.70″ | 94.0 mm |
| Wheel diameter | 19″ | 483 mm |
| Circumference | 82.94″ | 2107 mm |
Nominal dimensions from the size code. A real tire varies by a few millimeters between manufacturers, and a loaded tire sits slightly shorter than its free diameter.
235/40R19 compared with other sizes
All 26 practical swaps involving 235/40R19 — diameter change, speedometer impact and a fit verdict for each.
235/40R19 → 215/55R17
215/55R17
Diameter +0.3% · This fits
235/40R19 → 235/45R18
235/45R18
Diameter +0.3% · This fits
235/40R19 → 245/45R18
245/45R18
Diameter −1.0% · This fits
245/40R19 → 235/40R19
245/40R19
Diameter +1.2% · This fits
255/35R19 → 235/40R19
255/35R19
Diameter −1.4% · This fits
235/45R19 → 235/40R19
235/45R19
Diameter +3.5% · Borderline. Check clearance first
255/40R19 → 235/40R19
255/40R19
Diameter +2.4% · This fits
245/35R19 → 235/40R19
245/35R19
Diameter −2.5% · This fits
235/45R18 → 235/40R19
235/45R18
Diameter −0.3% · This fits
275/40R19 → 235/40R19
275/40R19
Diameter +4.8% · Borderline. Check clearance first
245/45R19 → 235/40R19
245/45R19
Diameter +4.8% · Borderline. Check clearance first
215/55R17 → 235/40R19
215/55R17
Diameter −0.3% · This fits
245/45R18 → 235/40R19
245/45R18
Diameter +1.1% · This fits
225/55R17 → 235/40R19
225/55R17
Diameter +1.3% · This fits
245/35R20 → 235/40R19
245/35R20
Diameter +1.3% · This fits
255/40R18 → 235/40R19
255/40R18
Diameter −1.4% · This fits
225/45R18 → 235/40R19
225/45R18
Diameter −1.6% · This fits
235/40R19 → 245/35R19
245/35R19
Diameter +2.5% · This fits
235/40R19 → 245/40R19
245/40R19
Diameter −1.2% · This fits
235/40R19 → 245/45R19
245/45R19
Diameter −4.6% · Borderline. Check clearance first
235/40R19 → 255/35R19
255/35R19
Diameter +1.4% · This fits
235/40R19 → 255/40R19
255/40R19
Diameter −2.3% · This fits
235/40R19 → 275/40R19
275/40R19
Diameter −4.6% · Borderline. Check clearance first
235/40R19 → 245/35R20
245/35R20
Diameter −1.3% · This fits
235/40R19 → 255/35R20
255/35R20
Diameter −2.3% · This fits
235/40R19 → 235/45R19
235/45R19
Diameter −3.4% · Borderline. Check clearance first
Common questions
- What is 235/40R19 in inches?
- A 235/40R19 tire is 26.40 inches tall and 9.3 inches wide, with a 3.70-inch sidewall, mounted on a 19-inch wheel. In metric that is 671 mm tall and 235 mm wide. The circumference is 82.94 inches.
- How tall is a 235/40R19 tire?
- 26.40 inches, or 671 mm. That is the overall diameter, wheel included. It turns about 764 times per mile, which is what your speedometer counts.
- What do the numbers in 235/40R19 mean?
- 235 is the tread width in millimeters, 40 is the aspect ratio — the sidewall height as a percentage of the tread width — and 19 is the wheel diameter in inches. So the sidewall is 235 × 40% = 94.0 mm tall.