285/70R17
A 285/70R17 tire is 32.71 inches tall and 11.2 inches wide, with a 7.85-inch sidewall, mounted on a 17-inch wheel.
Common fitments: Wrangler Rubicon, Power Wagon
Overall diameter
32.71″
831 mm
Sidewall height
7.85″
199.5 mm
Tread width
285 mm
11.2″
Circumference
102.76″
8.6 ft
Revs per mile
617
383 per km
Wheel diameter
17″
aspect ratio 70%
Cross-section
- Overall diameter
- 32.71″
- Sidewall (each side)
- 7.85″
- Wheel
- 17″
285/70R17 in inches and millimeters
Every dimension of a 285/70R17, converted both ways. Calculated from the size code, accurate to about 1%.
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter (height) | 32.71″ | 831 mm |
| Tread width | 11.2″ | 285 mm |
| Sidewall height | 7.85″ | 199.5 mm |
| Wheel diameter | 17″ | 432 mm |
| Circumference | 102.76″ | 2610 mm |
Nominal dimensions from the size code. A real tire varies by a few millimeters between manufacturers, and a loaded tire sits slightly shorter than its free diameter.
285/70R17 compared with other sizes
All 28 practical swaps involving 285/70R17 — diameter change, speedometer impact and a fit verdict for each.
285/70R17 → 265/70R17
265/70R17
Diameter +3.5% · Borderline. Check clearance first
285/70R17 → 285/75R16
285/75R16
Diameter −0.4% · This fits
285/70R17 → 245/75R17
245/75R17
Diameter +3.9% · Borderline. Check clearance first
285/70R17 → 255/70R17
255/70R17
Diameter +5.3% · Too big a jump
285/70R17 → 255/75R17
255/75R17
Diameter +2.0% · This fits
285/70R17 → 275/70R17
275/70R17
Diameter +1.7% · This fits
305/65R17 → 285/70R17
305/65R17
Diameter −0.3% · This fits
275/70R17 → 285/70R17
275/70R17
Diameter −1.7% · This fits
255/75R17 → 285/70R17
255/75R17
Diameter −2.0% · This fits
305/70R17 → 285/70R17
305/70R17
Diameter +3.4% · Borderline. Check clearance first
265/70R17 → 285/70R17
265/70R17
Diameter −3.4% · Borderline. Check clearance first
245/75R17 → 285/70R17
245/75R17
Diameter −3.8% · Borderline. Check clearance first
285/75R16 → 285/70R17
285/75R16
Diameter +0.4% · This fits
285/65R18 → 285/70R17
285/65R18
Diameter −0.4% · This fits
275/65R17 → 285/70R17
275/65R17
Diameter −5.0% · Borderline. Check clearance first
255/70R17 → 285/70R17
255/70R17
Diameter −5.1% · Too big a jump
315/70R17 → 285/70R17
315/70R17
Diameter +5.1% · Too big a jump
265/70R18 → 285/70R17
265/70R18
Diameter −0.3% · This fits
305/60R18 → 285/70R17
305/60R18
Diameter −0.9% · This fits
275/70R18 → 285/70R17
275/70R18
Diameter +1.4% · This fits
285/70R17 → 305/65R17
305/65R17
Diameter +0.3% · This fits
285/70R17 → 305/70R17
305/70R17
Diameter −3.3% · Borderline. Check clearance first
285/70R17 → 315/70R17
315/70R17
Diameter −4.8% · Borderline. Check clearance first
285/70R17 → 265/70R18
265/70R18
Diameter +0.3% · This fits
285/70R17 → 275/70R18
275/70R18
Diameter −1.4% · This fits
285/70R17 → 285/65R18
285/65R18
Diameter +0.4% · This fits
285/70R17 → 305/60R18
305/60R18
Diameter +0.9% · This fits
285/70R17 → 225/45R17
225/45R17
Diameter +31.0% · Too big a jump
Common questions
- What is 285/70R17 in inches?
- A 285/70R17 tire is 32.71 inches tall and 11.2 inches wide, with a 7.85-inch sidewall, mounted on a 17-inch wheel. In metric that is 831 mm tall and 285 mm wide. The circumference is 102.76 inches.
- How tall is a 285/70R17 tire?
- 32.71 inches, or 831 mm. That is the overall diameter, wheel included. It turns about 617 times per mile, which is what your speedometer counts.
- What do the numbers in 285/70R17 mean?
- 285 is the tread width in millimeters, 70 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 285 × 70% = 199.5 mm tall.