255/50R19
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 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% · Good fit
255/50R19 → 255/55R18
255/55R18
Diameter −0.0% · Good fit
255/50R19 → 245/45R19
245/45R19
Diameter +4.9% · Marginal fit — proceed with care
255/50R19 → 275/40R19
275/40R19
Diameter +5.0% · Marginal fit — proceed with care
255/50R19 → 265/50R19
265/50R19
Diameter −1.3% · Good fit
255/50R19 → 255/45R20
255/45R20
Diameter +0.0% · Good fit
255/50R19 → 295/35R20
295/35R20
Diameter +3.2% · Marginal fit — proceed with care
255/50R19 → 235/65R17
235/65R17
Diameter +0.0% · Good fit
255/50R19 → 235/50R19
235/50R19
Diameter +2.8% · Good fit
255/50R19 → 235/55R19
235/55R19
Diameter −0.5% · Good fit
255/50R19 → 245/55R19
245/55R19
Diameter −1.9% · Good fit
255/50R19 → 255/45R19
255/45R19
Diameter +3.6% · Marginal fit — proceed with care
235/55R19 → 255/50R19
235/55R19
Diameter +0.5% · Good fit
265/50R19 → 255/50R19
265/50R19
Diameter +1.4% · Good fit
245/55R19 → 255/50R19
245/55R19
Diameter +2.0% · Good fit
255/45R19 → 255/50R19
255/45R19
Diameter −3.5% · Marginal fit — proceed with care
235/50R19 → 255/50R19
235/50R19
Diameter −2.7% · Good fit
255/45R20 → 255/50R19
255/45R20
Diameter −0.0% · Good fit
255/55R18 → 255/50R19
255/55R18
Diameter +0.0% · Good fit
245/45R19 → 255/50R19
245/45R19
Diameter −4.7% · Marginal fit — proceed with care
275/40R19 → 255/50R19
275/40R19
Diameter −4.7% · Marginal fit — proceed with care
265/55R19 → 255/50R19
265/55R19
Diameter +4.9% · Marginal fit — proceed with care
235/65R17 → 255/50R19
235/65R17
Diameter −0.0% · Good fit
235/60R18 → 255/50R19
235/60R18
Diameter +0.2% · Good fit
265/40R21 → 255/50R19
265/40R21
Diameter +1.1% · Good fit
265/45R20 → 255/50R19
265/45R20
Diameter +1.2% · Good fit
255/50R19 → 265/55R19
265/55R19
Diameter −4.7% · Marginal fit — proceed with care
255/50R19 → 245/45R20
245/45R20
Diameter +1.2% · Good fit
255/50R19 → 275/40R20
275/40R20
Diameter +1.3% · Good fit
255/50R19 → 265/40R21
265/40R21
Diameter −1.0% · Good fit
255/50R19 → 245/40R19
245/40R19
Diameter +8.7% · Not recommended
Common questions
- What is the overall diameter of a 255/50R19 tire?
- A 255/50R19 tire is about 29.04″ (738 mm) in overall diameter, with a sidewall height of 127.5 mm and a circumference of 91.23″.
- How many revolutions per mile does a 255/50R19 tire turn?
- A 255/50R19 turns roughly 695 revolutions per mile (432 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 255/50R19 mean?
- 255 is the tread width in millimetres, 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.