205/50R17
Common fitments: Civic Si, Mini Cooper S
Overall diameter
25.07″
637 mm
Sidewall height
4.04″
102.5 mm
Tread width
205 mm
8.1″
Circumference
78.76″
6.6 ft
Revs per mile
804
500 per km
Wheel diameter
17″
aspect ratio 50%
Cross-section
- Overall diameter
- 25.07″
- Sidewall (each side)
- 4.04″
- Wheel
- 17″
205/50R17 compared with other sizes
All 32 practical swaps involving 205/50R17 — diameter change, speedometer impact and a fit verdict for each.
205/50R17 → 175/65R15
175/65R15
Diameter +4.7% · Marginal fit — proceed with care
205/50R17 → 185/65R15
185/65R15
Diameter +2.5% · Good fit
205/50R17 → 195/60R15
195/60R15
Diameter +3.5% · Marginal fit — proceed with care
205/50R17 → 195/65R15
195/65R15
Diameter +0.4% · Good fit
205/50R17 → 205/65R15
205/65R15
Diameter −1.7% · Good fit
205/50R17 → 185/55R16
185/55R16
Diameter +4.4% · Marginal fit — proceed with care
205/50R17 → 195/55R16
195/55R16
Diameter +2.6% · Good fit
205/50R17 → 205/55R16
205/55R16
Diameter +0.8% · Good fit
205/50R17 → 215/55R16
215/55R16
Diameter −0.9% · Good fit
225/45R17 → 205/50R17
225/45R17
Diameter −0.4% · Good fit
235/45R17 → 205/50R17
235/45R17
Diameter +1.0% · Good fit
215/50R17 → 205/50R17
215/50R17
Diameter +1.6% · Good fit
215/45R17 → 205/50R17
215/45R17
Diameter −1.8% · Good fit
245/45R17 → 205/50R17
245/45R17
Diameter +2.4% · Good fit
225/50R17 → 205/50R17
225/50R17
Diameter +3.1% · Marginal fit — proceed with care
205/55R16 → 205/50R17
205/55R16
Diameter −0.8% · Good fit
215/55R17 → 205/50R17
215/55R17
Diameter +4.9% · Marginal fit — proceed with care
225/40R18 → 205/50R17
225/40R18
Diameter +0.1% · Good fit
195/65R15 → 205/50R17
195/65R15
Diameter −0.4% · Good fit
205/65R15 → 205/50R17
205/65R15
Diameter +1.7% · Good fit
215/55R16 → 205/50R17
215/55R16
Diameter +1.0% · Good fit
205/60R16 → 205/50R17
205/60R16
Diameter +2.4% · Good fit
235/40R18 → 205/50R17
235/40R18
Diameter +1.3% · Good fit
205/50R17 → 215/45R17
215/45R17
Diameter +1.8% · Good fit
205/50R17 → 215/50R17
215/50R17
Diameter −1.5% · Good fit
205/50R17 → 215/55R17
215/55R17
Diameter −4.7% · Marginal fit — proceed with care
205/50R17 → 225/45R17
225/45R17
Diameter +0.4% · Good fit
205/50R17 → 225/50R17
225/50R17
Diameter −3.0% · Marginal fit — proceed with care
205/50R17 → 235/45R17
235/45R17
Diameter −1.0% · Good fit
205/50R17 → 245/45R17
245/45R17
Diameter −2.4% · Good fit
205/50R17 → 225/40R18
225/40R18
Diameter −0.1% · Good fit
205/50R17 → 235/40R18
235/40R18
Diameter −1.3% · Good fit
Common questions
- What is the overall diameter of a 205/50R17 tire?
- A 205/50R17 tire is about 25.07″ (637 mm) in overall diameter, with a sidewall height of 102.5 mm and a circumference of 78.76″.
- How many revolutions per mile does a 205/50R17 tire turn?
- A 205/50R17 turns roughly 804 revolutions per mile (500 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 205/50R17 mean?
- 205 is the tread width in millimetres, 50 is the aspect ratio — the sidewall height as a percentage of the tread width — and 17 is the wheel diameter in inches. So the sidewall is 205 × 50% = 102.5 mm tall.