235/80R16 tire size
235/80R16 is a metric size: 30.8" tall, 9.3" wide, on a 16" rim — about a 31x9.50R16. The sidewall is 7.4" and the tire turns 655 times per mile.
235/80R16 specs
| Overall diameter (height) | 30.80" · 782 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 7.40" · 188 mm (80% of width) |
| Rim diameter | 16" |
| Circumference | 96.77" · 2.458 m |
| Revolutions per mile | 655 (407 per km) |
| Inch (flotation) equivalent | 31x9.50R16 |
Equivalent sizes on a 16" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 265/75R16 common | 31.65" | +2.75% | +30 mm | 61.6 mph | calculate → |
| 245/75R16 common | 30.47" | -1.09% | +10 mm | 59.3 mph | calculate → |
| 225/75R16 common | 29.29" | -4.92% | -10 mm | 57.0 mph | calculate → |
| 265/70R16 common | 30.61" | -0.64% | +30 mm | 59.6 mph | calculate → |
| 235/85R16 common | 31.73" | +3.00% | 0 mm | 61.8 mph | calculate → |
| 245/70R16 common | 29.50" | -4.22% | +10 mm | 57.5 mph | calculate → |
| 215/85R16 common | 30.39" | -1.34% | -20 mm | 59.2 mph | calculate → |
| 255/70R16 common | 30.06" | -2.43% | +20 mm | 58.5 mph | calculate → |
| 235/75R16 | 29.88" | -3.00% | 0 mm | 58.2 mph | calculate → |
| 275/70R16 | 31.16" | +1.15% | +40 mm | 60.7 mph | calculate → |
| 31x12.50R16 | 31.00" | +0.64% | +83 mm | 60.4 mph | calculate → |
| 285/65R16 | 30.59" | -0.70% | +50 mm | 59.6 mph | calculate → |
| 285/70R16 | 31.71" | +2.94% | +50 mm | 61.8 mph | calculate → |
| 32x11.50R16 | 32.00" | +3.89% | +57 mm | 62.3 mph | calculate → |
| 31x10.50R16 | 31.00" | +0.64% | +32 mm | 60.4 mph | calculate → |
| 31x11.50R16 | 31.00" | +0.64% | +57 mm | 60.4 mph | calculate → |
| 31x11.00R16 | 31.00" | +0.64% | +44 mm | 60.4 mph | calculate → |
| 30x11.50R16 | 30.00" | -2.61% | +57 mm | 58.4 mph | calculate → |
| 225/90R16 | 31.94" | +3.71% | -10 mm | 62.2 mph | calculate → |
| 32x10.00R16 | 32.00" | +3.89% | +19 mm | 62.3 mph | calculate → |
| 32x9.00R16 | 32.00" | +3.89% | -6 mm | 62.3 mph | calculate → |
| 285/60R16 | 29.46" | -4.35% | +50 mm | 57.4 mph | calculate → |
| 225/85R16 | 31.06" | +0.83% | -10 mm | 60.5 mph | calculate → |
Plus / minus sizing: 15" and 17" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 245/70R17 common | 30.50" | -0.97% | +10 mm | 59.4 mph | calculate → |
| 265/65R17 common | 30.56" | -0.78% | +30 mm | 59.5 mph | calculate → |
| 31x10.50R15 common | 31.00" | +0.64% | +32 mm | 60.4 mph | calculate → |
| 255/70R17 common | 31.06" | +0.82% | +20 mm | 60.5 mph | calculate → |
| 235/75R17 | 30.88" | +0.24% | 0 mm | 60.1 mph | calculate → |
| 265/75R15 | 30.65" | -0.50% | +30 mm | 59.7 mph | calculate → |
| 275/65R17 | 31.07" | +0.88% | +40 mm | 60.5 mph | calculate → |
| 31x12.50R15 | 31.00" | +0.64% | +83 mm | 60.4 mph | calculate → |
| 315/55R17 | 30.64" | -0.52% | +80 mm | 59.7 mph | calculate → |
| 31x10.50R17 | 31.00" | +0.64% | +32 mm | 60.4 mph | calculate → |
| 31x11.50R15 | 31.00" | +0.64% | +57 mm | 60.4 mph | calculate → |
| 31x11.00R15 | 31.00" | +0.64% | +44 mm | 60.4 mph | calculate → |
| 31x13.50R15 | 31.00" | +0.64% | +108 mm | 60.4 mph | calculate → |
| 31x13.00R15 | 31.00" | +0.64% | +95 mm | 60.4 mph | calculate → |
| 31x16.50R15 | 31.00" | +0.64% | +184 mm | 60.4 mph | calculate → |
| 31x16.00R15 | 31.00" | +0.64% | +171 mm | 60.4 mph | calculate → |
| 31x18.00R15 | 31.00" | +0.64% | +222 mm | 60.4 mph | calculate → |
| 31x9.50R15 | 31.00" | +0.64% | +6 mm | 60.4 mph | calculate → |
| 31x14.50R15 | 31.00" | +0.64% | +133 mm | 60.4 mph | calculate → |
| 31x18.50R15 | 31.00" | +0.64% | +235 mm | 60.4 mph | calculate → |
Try another size against 235/80R16
Questions
What size is 235/80R16 in inches?
235/80R16 is about 30.8" tall and 9.3" wide on a 16-inch rim — roughly a 31x9.50R16 in inch sizing.
What does 235/80R16 mean?
235 mm section width, sidewall 80% of the width (7.40"), radial construction, 16-inch rim.
What tire sizes are equivalent to 235/80R16?
On the same 16" rim, within 3% of the diameter: 31x10.50R16 (+0.64%), 31x11.50R16 (+0.64%), 31x11.00R16 (+0.64%), 31x12.50R16 (+0.64%), 265/70R16 (-0.64%), 285/65R16 (-0.70%).
How many revolutions per mile does a 235/80R16 tire make?
About 655 revolutions per mile (circumference 96.8").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.