265/50R20
Common fitments: Ram 1500, Durango SRT
Overall diameter
30.43″
773 mm
Sidewall height
5.22″
132.5 mm
Tread width
265 mm
10.4″
Circumference
95.61″
8.0 ft
Revs per mile
663
412 per km
Wheel diameter
20″
aspect ratio 50%
Cross-section
- Overall diameter
- 30.43″
- Sidewall (each side)
- 5.22″
- Wheel
- 20″
265/50R20 compared with other sizes
All 32 practical swaps involving 265/50R20 — diameter change, speedometer impact and a fit verdict for each.
265/50R20 → 265/60R18
265/60R18
Diameter −0.3% · Good fit
265/50R20 → 255/45R20
255/45R20
Diameter +4.8% · Marginal fit — proceed with care
265/50R20 → 275/45R20
275/45R20
Diameter +2.3% · Good fit
265/50R20 → 275/55R20
275/55R20
Diameter −4.6% · Marginal fit — proceed with care
265/50R20 → 265/55R19
265/55R19
Diameter −0.1% · Good fit
265/50R20 → 245/50R20
245/50R20
Diameter +2.7% · Good fit
265/50R20 → 255/50R20
255/50R20
Diameter +1.3% · Good fit
265/50R20 → 255/55R20
255/55R20
Diameter −2.0% · Good fit
265/50R20 → 265/45R20
265/45R20
Diameter +3.5% · Marginal fit — proceed with care
255/50R20 → 265/50R20
255/50R20
Diameter −1.3% · Good fit
255/55R20 → 265/50R20
255/55R20
Diameter +2.0% · Good fit
265/55R20 → 265/50R20
265/55R20
Diameter +3.4% · Marginal fit — proceed with care
265/45R20 → 265/50R20
265/45R20
Diameter −3.4% · Marginal fit — proceed with care
275/45R20 → 265/50R20
275/45R20
Diameter −2.3% · Good fit
245/50R20 → 265/50R20
245/50R20
Diameter −2.6% · Good fit
285/50R20 → 265/50R20
285/50R20
Diameter +2.6% · Good fit
265/55R19 → 265/50R20
265/55R19
Diameter +0.1% · Good fit
265/45R21 → 265/50R20
265/45R21
Diameter −0.1% · Good fit
265/60R18 → 265/50R20
265/60R18
Diameter +0.3% · Good fit
255/45R20 → 265/50R20
255/45R20
Diameter −4.6% · Marginal fit — proceed with care
275/55R20 → 265/50R20
275/55R20
Diameter +4.9% · Marginal fit — proceed with care
305/50R20 → 265/50R20
305/50R20
Diameter +5.2% · Not recommended
245/65R18 → 265/50R20
245/65R18
Diameter +0.3% · Good fit
265/50R20 → 265/55R20
265/55R20
Diameter −3.3% · Marginal fit — proceed with care
265/50R20 → 285/50R20
285/50R20
Diameter −2.5% · Good fit
265/50R20 → 305/50R20
305/50R20
Diameter −4.9% · Marginal fit — proceed with care
265/50R20 → 265/45R21
265/45R21
Diameter +0.1% · Good fit
265/50R20 → 275/45R21
275/45R21
Diameter −1.0% · Good fit
265/50R20 → 285/40R21
285/40R21
Diameter +1.5% · Good fit
265/50R20 → 285/45R21
285/45R21
Diameter −2.1% · Good fit
265/50R20 → 275/40R22
275/40R22
Diameter −0.7% · Good fit
265/50R20 → 285/40R22
285/40R22
Diameter −1.8% · Good fit
Common questions
- What is the overall diameter of a 265/50R20 tire?
- A 265/50R20 tire is about 30.43″ (773 mm) in overall diameter, with a sidewall height of 132.5 mm and a circumference of 95.61″.
- How many revolutions per mile does a 265/50R20 tire turn?
- A 265/50R20 turns roughly 663 revolutions per mile (412 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 265/50R20 mean?
- 265 is the tread width in millimetres, 50 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 265 × 50% = 132.5 mm tall.