255/50R19
A 255/50R19 tire is 29.04 inches tall and 10.0 inches wide, with a 5.02-inch sidewall, mounted on a 19-inch wheel.
Overall diameter
29.04″
738 mm
Sidewall height
5.02″
127.5 mm
Tread width
255 mm
10.0″
Circumference
91.23″
7.6 ft
Revs per mile
695
432 per km
Wheel diameter
19″
aspect ratio 50%
Cross-section
- Overall diameter
- 29.04″
- Sidewall (each side)
- 5.02″
- Wheel
- 19″
255/50R19 in inches and millimeters
Every dimension of a 255/50R19, converted both ways. Calculated from the size code, accurate to about 1%.
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter (height) | 29.04″ | 738 mm |
| Tread width | 10.0″ | 255 mm |
| Sidewall height | 5.02″ | 127.5 mm |
| Wheel diameter | 19″ | 483 mm |
| Circumference | 91.23″ | 2317 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.
255/50R19 compared with other sizes
All 31 practical swaps involving 255/50R19 — diameter change, speedometer impact and a fit verdict for each.
255/50R19 → 235/60R18
235/60R18
Diameter −0.2% · This fits
255/50R19 → 255/55R18
255/55R18
Diameter −0.0% · This fits
255/50R19 → 245/45R19
245/45R19
Diameter +4.9% · Borderline. Check clearance first
255/50R19 → 275/40R19
275/40R19
Diameter +5.0% · Borderline. Check clearance first
255/50R19 → 265/50R19
265/50R19
Diameter −1.3% · This fits
255/50R19 → 255/45R20
255/45R20
Diameter +0.0% · This fits
255/50R19 → 295/35R20
295/35R20
Diameter +3.2% · Borderline. Check clearance first
255/50R19 → 235/65R17
235/65R17
Diameter +0.0% · This fits
255/50R19 → 235/50R19
235/50R19
Diameter +2.8% · This fits
255/50R19 → 235/55R19
235/55R19
Diameter −0.5% · This fits
255/50R19 → 245/55R19
245/55R19
Diameter −1.9% · This fits
255/50R19 → 255/45R19
255/45R19
Diameter +3.6% · Borderline. Check clearance first
235/55R19 → 255/50R19
235/55R19
Diameter +0.5% · This fits
265/50R19 → 255/50R19
265/50R19
Diameter +1.4% · This fits
245/55R19 → 255/50R19
245/55R19
Diameter +2.0% · This fits
255/45R19 → 255/50R19
255/45R19
Diameter −3.5% · Borderline. Check clearance first
235/50R19 → 255/50R19
235/50R19
Diameter −2.7% · This fits
255/45R20 → 255/50R19
255/45R20
Diameter −0.0% · This fits
255/55R18 → 255/50R19
255/55R18
Diameter +0.0% · This fits
245/45R19 → 255/50R19
245/45R19
Diameter −4.7% · Borderline. Check clearance first
275/40R19 → 255/50R19
275/40R19
Diameter −4.7% · Borderline. Check clearance first
265/55R19 → 255/50R19
265/55R19
Diameter +4.9% · Borderline. Check clearance first
235/65R17 → 255/50R19
235/65R17
Diameter −0.0% · This fits
235/60R18 → 255/50R19
235/60R18
Diameter +0.2% · This fits
265/40R21 → 255/50R19
265/40R21
Diameter +1.1% · This fits
265/45R20 → 255/50R19
265/45R20
Diameter +1.2% · This fits
255/50R19 → 265/55R19
265/55R19
Diameter −4.7% · Borderline. Check clearance first
255/50R19 → 245/45R20
245/45R20
Diameter +1.2% · This fits
255/50R19 → 275/40R20
275/40R20
Diameter +1.3% · This fits
255/50R19 → 265/40R21
265/40R21
Diameter −1.0% · This fits
255/50R19 → 245/40R19
245/40R19
Diameter +8.7% · Too big a jump
Common questions
- What is 255/50R19 in inches?
- A 255/50R19 tire is 29.04 inches tall and 10.0 inches wide, with a 5.02-inch sidewall, mounted on a 19-inch wheel. In metric that is 738 mm tall and 255 mm wide. The circumference is 91.23 inches.
- How tall is a 255/50R19 tire?
- 29.04 inches, or 738 mm. That is the overall diameter, wheel included. It turns about 695 times per mile, which is what your speedometer counts.
- What do the numbers in 255/50R19 mean?
- 255 is the tread width in millimeters, 50 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 255 × 50% = 127.5 mm tall.