235/45R17
Common fitments: Mustang, Camaro, 3 Series
Overall diameter
25.33″
643 mm
Sidewall height
4.16″
105.8 mm
Tread width
235 mm
9.3″
Circumference
79.57″
6.6 ft
Revs per mile
796
495 per km
Wheel diameter
17″
aspect ratio 45%
Cross-section
- Overall diameter
- 25.33″
- Sidewall (each side)
- 4.16″
- Wheel
- 17″
235/45R17 compared with other sizes
All 31 practical swaps involving 235/45R17 — diameter change, speedometer impact and a fit verdict for each.
235/45R17 → 195/60R15
195/60R15
Diameter +4.6% · Marginal fit — proceed with care
235/45R17 → 195/65R15
195/65R15
Diameter +1.4% · Good fit
235/45R17 → 205/65R15
205/65R15
Diameter −0.6% · Good fit
235/45R17 → 205/55R16
205/55R16
Diameter +1.8% · Good fit
235/45R17 → 215/55R16
215/55R16
Diameter +0.1% · Good fit
235/45R17 → 205/50R17
205/50R17
Diameter +1.0% · Good fit
235/45R17 → 215/45R17
215/45R17
Diameter +2.9% · Good fit
235/45R17 → 215/50R17
215/50R17
Diameter −0.5% · Good fit
235/45R17 → 215/55R17
215/55R17
Diameter −3.7% · Marginal fit — proceed with care
235/45R17 → 225/45R17
225/45R17
Diameter +1.4% · Good fit
235/45R17 → 225/50R17
225/50R17
Diameter −2.1% · Good fit
235/45R17 → 225/55R17
225/55R17
Diameter −5.3% · Not recommended
215/50R17 → 235/45R17
215/50R17
Diameter +0.5% · Good fit
205/50R17 → 235/45R17
205/50R17
Diameter −1.0% · Good fit
225/45R17 → 235/45R17
225/45R17
Diameter −1.4% · Good fit
245/45R17 → 235/45R17
245/45R17
Diameter +1.4% · Good fit
225/50R17 → 235/45R17
225/50R17
Diameter +2.1% · Good fit
215/45R17 → 235/45R17
215/45R17
Diameter −2.8% · Good fit
215/55R17 → 235/45R17
215/55R17
Diameter +3.9% · Marginal fit — proceed with care
235/40R18 → 235/45R17
235/40R18
Diameter +0.3% · Good fit
215/55R16 → 235/45R17
215/55R16
Diameter −0.1% · Good fit
205/65R15 → 235/45R17
205/65R15
Diameter +0.7% · Good fit
225/40R18 → 235/45R17
225/40R18
Diameter −0.9% · Good fit
195/65R15 → 235/45R17
195/65R15
Diameter −1.4% · Good fit
205/60R16 → 235/45R17
205/60R16
Diameter +1.4% · Good fit
245/40R18 → 235/45R17
245/40R18
Diameter +1.5% · Good fit
235/45R17 → 245/45R17
245/45R17
Diameter −1.4% · Good fit
235/45R17 → 225/40R18
225/40R18
Diameter +1.0% · Good fit
235/45R17 → 235/40R18
235/40R18
Diameter −0.3% · Good fit
235/45R17 → 245/40R18
245/40R18
Diameter −1.5% · Good fit
235/45R17 → 245/35R19
245/35R19
Diameter −1.7% · Good fit
Common questions
- What is the overall diameter of a 235/45R17 tire?
- A 235/45R17 tire is about 25.33″ (643 mm) in overall diameter, with a sidewall height of 105.8 mm and a circumference of 79.57″.
- How many revolutions per mile does a 235/45R17 tire turn?
- A 235/45R17 turns roughly 796 revolutions per mile (495 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 235/45R17 mean?
- 235 is the tread width in millimetres, 45 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 235 × 45% = 105.8 mm tall.