215/85R16 tire size
215/85R16 is a metric size: 30.4" tall, 8.5" wide, on a 16" rim — about a 30.5x8.50R16. The sidewall is 7.2" and the tire turns 664 times per mile.
215/85R16 specs
| Overall diameter (height) | 30.39" · 772 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 7.19" · 183 mm (85% of width) |
| Rim diameter | 16" |
| Circumference | 95.47" · 2.425 m |
| Revolutions per mile | 664 (412 per km) |
| Inch (flotation) equivalent | 30.5x8.50R16 |
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" | +4.15% | +50 mm | 62.5 mph | compare → |
| 245/75R16 common | 30.47" | +0.26% | +30 mm | 60.2 mph | compare → |
| 225/75R16 common | 29.29" | -3.63% | +10 mm | 57.8 mph | compare → |
| 265/70R16 common | 30.61" | +0.71% | +50 mm | 60.4 mph | compare → |
| 235/70R16 common | 28.95" | -4.73% | +20 mm | 57.2 mph | compare → |
| 235/85R16 common | 31.73" | +4.40% | +20 mm | 62.6 mph | compare → |
| 245/70R16 common | 29.50" | -2.91% | +30 mm | 58.3 mph | compare → |
| 255/70R16 common | 30.06" | -1.10% | +40 mm | 59.3 mph | compare → |
| 235/75R16 | 29.88" | -1.68% | +20 mm | 59.0 mph | compare → |
| 255/65R16 | 29.05" | -4.40% | +40 mm | 57.4 mph | compare → |
| 275/70R16 | 31.16" | +2.53% | +60 mm | 61.5 mph | compare → |
| 235/80R16 | 30.80" | +1.36% | +20 mm | 60.8 mph | calculate → |
| 285/65R16 | 30.59" | +0.65% | +70 mm | 60.4 mph | calculate → |
| 31x12.50R16 | 31.00" | +2.01% | +103 mm | 61.2 mph | calculate → |
| 285/70R16 | 31.71" | +4.34% | +70 mm | 62.6 mph | calculate → |
| 30x11.50R16 | 30.00" | -1.28% | +77 mm | 59.2 mph | calculate → |
| 31x10.50R16 | 31.00" | +2.01% | +52 mm | 61.2 mph | calculate → |
| 31x11.50R16 | 31.00" | +2.01% | +77 mm | 61.2 mph | calculate → |
| 31x11.00R16 | 31.00" | +2.01% | +64 mm | 61.2 mph | calculate → |
| 285/60R16 | 29.46" | -3.04% | +70 mm | 58.2 mph | calculate → |
| 205/80R16 | 28.91" | -4.86% | -10 mm | 57.1 mph | calculate → |
| 225/85R16 | 31.06" | +2.20% | +10 mm | 61.3 mph | calculate → |
| 275/60R16 | 28.99" | -4.60% | +60 mm | 57.2 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" | +0.38% | +30 mm | 60.2 mph | compare → |
| 265/65R17 common | 30.56" | +0.57% | +50 mm | 60.3 mph | compare → |
| 225/75R17 | 30.29" | -0.34% | +10 mm | 59.8 mph | compare → |
| 265/75R15 | 30.65" | +0.86% | +50 mm | 60.5 mph | calculate → |
| 295/65R15 | 30.10" | -0.96% | +80 mm | 59.4 mph | calculate → |
| 315/55R17 | 30.64" | +0.83% | +100 mm | 60.5 mph | calculate → |
| 285/60R17 | 30.46" | +0.25% | +70 mm | 60.1 mph | calculate → |
Try another size against 215/85R16
Questions
What size is 215/85R16 in inches?
215/85R16 is about 30.4" tall and 8.5" wide on a 16-inch rim — roughly a 30.5x8.50R16 in inch sizing.
What does 215/85R16 mean?
215 mm section width, sidewall 85% of the width (7.19"), radial construction, 16-inch rim.
What tire sizes are equivalent to 215/85R16?
On the same 16" rim, within 3% of the diameter: 245/75R16 (+0.26%), 285/65R16 (+0.65%), 265/70R16 (+0.71%), 255/70R16 (-1.10%), 30x11.50R16 (-1.28%), 235/80R16 (+1.36%).
How many revolutions per mile does a 215/85R16 tire make?
About 664 revolutions per mile (circumference 95.5").
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.