275/65R20
Overall diameter
34.07″
865 mm
Sidewall height
7.04″
178.8 mm
Tread width
275 mm
10.8″
Circumference
107.05″
8.9 ft
Revs per mile
592
368 per km
Wheel diameter
20″
aspect ratio 65%
Cross-section
- Overall diameter
- 34.07″
- Sidewall (each side)
- 7.04″
- Wheel
- 20″
275/65R20 compared with other sizes
All 28 practical swaps involving 275/65R20 — diameter change, speedometer impact and a fit verdict for each.
275/65R20 → 285/70R18
285/70R18
Diameter +1.1% · Good fit
275/65R20 → 295/70R18
295/70R18
Diameter −0.5% · Good fit
275/65R20 → 265/60R20
265/60R20
Diameter +4.8% · Marginal fit — proceed with care
275/65R20 → 275/60R20
275/60R20
Diameter +3.3% · Marginal fit — proceed with care
295/60R20 → 275/65R20
295/60R20
Diameter −0.4% · Good fit
285/65R20 → 275/65R20
285/65R20
Diameter +1.5% · Good fit
285/60R20 → 275/65R20
285/60R20
Diameter −1.8% · Good fit
275/60R20 → 275/65R20
275/60R20
Diameter −3.2% · Marginal fit — proceed with care
305/55R20 → 275/65R20
305/55R20
Diameter −2.5% · Good fit
295/65R20 → 275/65R20
295/65R20
Diameter +3.0% · Marginal fit — proceed with care
265/60R20 → 275/65R20
265/60R20
Diameter −4.6% · Marginal fit — proceed with care
285/55R20 → 275/65R20
285/55R20
Diameter −5.1% · Not recommended
295/70R18 → 275/65R20
295/70R18
Diameter +0.5% · Good fit
285/70R18 → 275/65R20
285/70R18
Diameter −1.1% · Good fit
275/70R18 → 275/65R20
275/70R18
Diameter −2.7% · Good fit
275/50R22 → 275/65R20
275/50R22
Diameter −3.7% · Marginal fit — proceed with care
285/50R22 → 275/65R20
285/50R22
Diameter −2.5% · Good fit
305/45R22 → 275/65R20
305/45R22
Diameter −3.7% · Marginal fit — proceed with care
275/65R20 → 285/55R20
285/55R20
Diameter +5.4% · Not recommended
275/65R20 → 285/60R20
285/60R20
Diameter +1.8% · Good fit
275/65R20 → 285/65R20
285/65R20
Diameter −1.5% · Good fit
275/65R20 → 295/60R20
295/60R20
Diameter +0.4% · Good fit
275/65R20 → 295/65R20
295/65R20
Diameter −2.9% · Good fit
275/65R20 → 305/55R20
305/55R20
Diameter +2.6% · Good fit
275/65R20 → 275/50R22
275/50R22
Diameter +3.8% · Marginal fit — proceed with care
275/65R20 → 285/50R22
285/50R22
Diameter +2.6% · Good fit
275/65R20 → 305/45R22
305/45R22
Diameter +3.9% · Marginal fit — proceed with care
275/65R20 → 275/55R20
275/55R20
Diameter +6.8% · Not recommended
Common questions
- What is the overall diameter of a 275/65R20 tire?
- A 275/65R20 tire is about 34.07″ (865 mm) in overall diameter, with a sidewall height of 178.8 mm and a circumference of 107.05″.
- How many revolutions per mile does a 275/65R20 tire turn?
- A 275/65R20 turns roughly 592 revolutions per mile (368 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 275/65R20 mean?
- 275 is the tread width in millimetres, 65 is the aspect ratio — the sidewall height as a percentage of the tread width — and 20 is the wheel diameter in inches. So the sidewall is 275 × 65% = 178.8 mm tall.