235/75R15
Overall diameter
28.88″
733 mm
Sidewall height
6.94″
176.3 mm
Tread width
235 mm
9.3″
Circumference
90.72″
7.6 ft
Revs per mile
698
434 per km
Wheel diameter
15″
aspect ratio 75%
Cross-section
- Overall diameter
- 28.88″
- Sidewall (each side)
- 6.94″
- Wheel
- 15″
235/75R15 compared with other sizes
All 20 practical swaps involving 235/75R15 — diameter change, speedometer impact and a fit verdict for each.
265/70R15 → 235/75R15
265/70R15
Diameter +2.5% · Good fit
235/70R16 → 235/75R15
235/70R16
Diameter +0.3% · Good fit
235/65R17 → 235/75R15
235/65R17
Diameter +0.5% · Good fit
225/65R17 → 235/75R15
225/65R17
Diameter −1.3% · Good fit
225/75R16 → 235/75R15
225/75R16
Diameter +1.4% · Good fit
235/60R17 → 235/75R15
235/60R17
Diameter −2.7% · Good fit
225/70R16 → 235/75R15
225/70R16
Diameter −1.6% · Good fit
245/70R16 → 235/75R15
245/70R16
Diameter +2.2% · Good fit
245/65R17 → 235/75R15
245/65R17
Diameter +2.3% · Good fit
215/65R17 → 235/75R15
215/65R17
Diameter −3.0% · Marginal fit — proceed with care
215/70R16 → 235/75R15
215/70R16
Diameter −3.6% · Marginal fit — proceed with care
255/65R17 → 235/75R15
255/65R17
Diameter +4.1% · Marginal fit — proceed with care
255/70R16 → 235/75R15
255/70R16
Diameter +4.1% · Marginal fit — proceed with care
225/60R17 → 235/75R15
225/60R17
Diameter −4.3% · Marginal fit — proceed with care
235/75R15 → 265/70R15
265/70R15
Diameter −2.5% · Good fit
235/75R15 → 225/70R16
225/70R16
Diameter +1.7% · Good fit
235/75R15 → 235/70R16
235/70R16
Diameter −0.3% · Good fit
235/75R15 → 225/65R17
225/65R17
Diameter +1.3% · Good fit
235/75R15 → 235/65R17
235/65R17
Diameter −0.5% · Good fit
235/75R15 → 195/65R15
195/65R15
Diameter +15.6% · Not recommended
Common questions
- What is the overall diameter of a 235/75R15 tire?
- A 235/75R15 tire is about 28.88″ (733 mm) in overall diameter, with a sidewall height of 176.3 mm and a circumference of 90.72″.
- How many revolutions per mile does a 235/75R15 tire turn?
- A 235/75R15 turns roughly 698 revolutions per mile (434 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
- What do the numbers in 235/75R15 mean?
- 235 is the tread width in millimetres, 75 is the aspect ratio — the sidewall height as a percentage of the tread width — and 15 is the wheel diameter in inches. So the sidewall is 235 × 75% = 176.3 mm tall.