275/40R19
Common fitments: Challenger, Corvette (rear)
Overall diameter
27.66″
703 mm
Sidewall height
4.33″
110.0 mm
Tread width
275 mm
10.8″
Circumference
86.90″
7.2 ft
Revs per mile
729
453 per km
Wheel diameter
19″
aspect ratio 40%
Cross-section
- Overall diameter
- 27.66″
- Sidewall (each side)
- 4.33″
- Wheel
- 19″
275/40R19 compared with other sizes
All 28 practical swaps involving 275/40R19 — diameter change, speedometer impact and a fit verdict for each.
275/40R19 → 235/40R19
235/40R19
Diameter +4.8% · Marginal fit — proceed with care
275/40R19 → 245/40R19
245/40R19
Diameter +3.5% · Marginal fit — proceed with care
275/40R19 → 245/45R19
245/45R19
Diameter −0.1% · Good fit
275/40R19 → 255/40R19
255/40R19
Diameter +2.3% · Good fit
245/45R19 → 275/40R19
245/45R19
Diameter +0.1% · Good fit
235/45R19 → 275/40R19
235/45R19
Diameter −1.2% · Good fit
255/45R19 → 275/40R19
255/45R19
Diameter +1.4% · Good fit
235/50R19 → 275/40R19
235/50R19
Diameter +2.1% · Good fit
255/40R19 → 275/40R19
255/40R19
Diameter −2.3% · Good fit
245/40R19 → 275/40R19
245/40R19
Diameter −3.4% · Marginal fit — proceed with care
275/35R20 → 275/40R19
275/35R20
Diameter −0.3% · Good fit
235/40R19 → 275/40R19
235/40R19
Diameter −4.6% · Marginal fit — proceed with care
255/50R19 → 275/40R19
255/50R19
Diameter +5.0% · Marginal fit — proceed with care
245/40R20 → 275/40R19
245/40R20
Diameter +0.2% · Good fit
235/55R19 → 275/40R19
235/55R19
Diameter +5.5% · Not recommended
265/35R20 → 275/40R19
265/35R20
Diameter −1.3% · Good fit
235/50R18 → 275/40R19
235/50R18
Diameter −1.5% · Good fit
235/60R17 → 275/40R19
235/60R17
Diameter +1.6% · Good fit
275/40R19 → 255/35R20
255/35R20
Diameter +2.3% · Good fit
275/40R19 → 295/35R20
295/35R20
Diameter −1.7% · Good fit
275/40R19 → 235/45R19
235/45R19
Diameter +1.2% · Good fit
275/40R19 → 235/50R19
235/50R19
Diameter −2.1% · Good fit
275/40R19 → 235/55R19
235/55R19
Diameter −5.2% · Not recommended
275/40R19 → 255/45R19
255/45R19
Diameter −1.3% · Good fit
275/40R19 → 255/50R19
255/50R19
Diameter −4.7% · Marginal fit — proceed with care
275/40R19 → 245/40R20
245/40R20
Diameter −0.2% · Good fit
275/40R19 → 265/35R20
265/35R20
Diameter +1.3% · Good fit
275/40R19 → 275/35R20
275/35R20
Diameter +0.3% · Good fit
Common questions
- What is the overall diameter of a 275/40R19 tire?
- A 275/40R19 tire is about 27.66″ (703 mm) in overall diameter, with a sidewall height of 110.0 mm and a circumference of 86.90″.
- How many revolutions per mile does a 275/40R19 tire turn?
- A 275/40R19 turns roughly 729 revolutions per mile (453 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 275/40R19 mean?
- 275 is the tread width in millimetres, 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 275 × 40% = 110.0 mm tall.