Home › 16" tire sizes › 235/85R16
235/85R16 tire size in inches
235/85R16 is 31.73" tall and 9.25" wide, and fits a 16" rim. In flotation (inch) sizing that is roughly 31.7x9.3R16.
235/85R16 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 31.73" | 806 mm |
| Section width | 9.25" | 235 mm |
| Sidewall height | 7.86" | 199.8 mm |
| Rim diameter | 16" | 406.4 mm |
| Circumference | 99.7" | 2532 mm |
| Revolutions per mile | 636 | |
| Aspect ratio | 85% (sidewall is 85% of the width) | |
Drawn to scale
Among the 102 sizes for 16" wheels on this site, 235/85R16 is #64 by height (shortest: 205/50R16, tallest: 385/75R16).
What people compare 235/85R16 with
Real comparisons drivers search for, worked out against 235/85R16:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 265/75R16 | -0.08" (-0.25%) | +1.18" | -0.04" | 60.2 mph |
| 235/80R16 | -0.93" (-2.93%) | 0.00" | -0.46" | 61.8 mph |
| 245/75R16 | -1.26" (-3.97%) | +0.40" | -0.63" | 62.5 mph |
| 285/75R16 | +1.10" (+3.47%) | +1.97" | +0.56" | 58 mph |
| 255/85R16 | +1.34" (+4.22%) | +0.79" | +0.67" | 57.6 mph |
| 215/85R16 | -1.34" (-4.22%) | -0.79" | -0.67" | 62.6 mph |
| 265/70R16 | -1.12" (-3.53%) | +1.18" | -0.56" | 62.2 mph |
| 225/75R16 | -2.44" (-7.69%) | -0.39" | -1.22" | 65 mph |
How the 235/85R16 numbers are worked out
The size code reads as 235 mm section width, 85% aspect ratio, R for radial construction and 16-inch wheel.
- Sidewall = 235 × 85% = 199.8 mm = 7.86"
- Diameter = 16" + 2 × 7.86" = 31.73"
- Circumference = π × 31.73" = 99.7"
- Revs per mile = 63,360" ÷ 99.7" = 636
Sizes that can replace 235/85R16 on a 16" wheel
Within 3% of 31.73". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 285/70R16 | 31.71" | 11.22" | -0.06% | 60 mph |
| 265/75R16 | 31.65" | 10.43" | -0.25% | 60.2 mph |
| 305/65R16 | 31.61" | 12.01" | -0.38% | 60.2 mph |
| 270/75R16 | 31.94" | 10.63" | +0.66% | 59.6 mph |
| 245/80R16 | 31.43" | 9.65" | -0.95% | 60.6 mph |
| 280/70R16 | 31.43" | 11.02" | -0.95% | 60.6 mph |
| 255/80R16 | 32.06" | 10.04" | +1.04% | 59.4 mph |
| 315/65R16 | 32.12" | 12.40" | +1.23% | 59.3 mph |
| 275/75R16 | 32.24" | 10.83" | +1.61% | 59.1 mph |
| 375/55R16 | 32.24" | 14.76" | +1.61% | 59.1 mph |
| 295/70R16 | 32.26" | 11.61" | +1.67% | 59 mph |
| 275/70R16 | 31.16" | 10.83" | -1.8% | 61.1 mph |
One size wider or narrower
- Narrower: 225/85R16 — 8.86" wide, 31.06" tall
- Wider: 245/85R16 — 9.65" wide, 32.40" tall
Same height on a different wheel size
- 265/80R15 15" (-0.13%)
- 305/70R15 15" (+0.25%)
- 285/75R15 15" (+0.32%)
- 245/85R15 15" (-1.04%)
- 255/85R15 15" (+1.07%)
- 295/70R15 15" (-1.48%)
- 275/75R15 15" (-1.54%)
- 315/70R15 15" (+1.99%)
- 235/80R17 17" (+0.22%)
- 265/70R17 17" (-0.38%)
Questions about 235/85R16
How tall is a 235/85R16 tire in inches?
A 235/85R16 tire is 31.73 inches (806 mm) tall: the 16-inch rim plus two sidewalls of 7.86 inches each.
Is 235/85R16 a 32 inch tire?
Yes. At 31.73 inches tall it is commonly called a 32-inch tire.
How many revolutions per mile does a 235/85R16 make?
About 636 revolutions per mile, based on a calculated circumference of 99.7 inches.
What size can replace 235/85R16?
285/70R16 is the closest match on a 16" rim (-0.06% height). Check load index, speed rating and clearance first.
Compare 235/85R16 against any other size with the tire size calculator.