215/45R17 tire size
215/45R17 is a metric size: 24.6" tall, 8.5" wide, on a 17" rim — about a 24.5x8.50R17. The sidewall is 3.8" and the tire turns 819 times per mile.
215/45R17 specs
| Overall diameter (height) | 24.62" · 625 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 3.81" · 97 mm (45% of width) |
| Rim diameter | 17" |
| Circumference | 77.34" · 1.964 m |
| Revolutions per mile | 819 (509 per km) |
| Inch (flotation) equivalent | 24.5x8.50R17 |
Equivalent sizes on a 17" 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 | |
|---|---|---|---|---|---|
| 225/45R17 common | 24.97" | +1.44% | +10 mm | 60.9 mph | compare → |
| 205/50R17 common | 25.07" | +1.84% | -10 mm | 61.1 mph | compare → |
| 215/50R17 common | 25.46" | +3.44% | 0 mm | 62.1 mph | compare → |
| 235/45R17 common | 25.33" | +2.88% | +20 mm | 61.7 mph | compare → |
| 245/45R17 common | 25.68" | +4.32% | +30 mm | 62.6 mph | compare → |
| 245/40R17 common | 24.72" | +0.40% | +30 mm | 60.2 mph | compare → |
| 205/45R17 common | 24.26" | -1.44% | -10 mm | 59.1 mph | compare → |
| 255/40R17 common | 25.03" | +1.68% | +40 mm | 61.0 mph | compare → |
| 275/40R17 | 25.66" | +4.24% | +60 mm | 62.5 mph | compare → |
| 205/40R17 | 23.46" | -4.72% | -10 mm | 57.2 mph | compare → |
| 235/40R17 | 24.40" | -0.88% | +20 mm | 59.5 mph | compare → |
| 215/40R17 | 23.77" | -3.44% | 0 mm | 57.9 mph | compare → |
| 315/35R17 | 25.68" | +4.32% | +100 mm | 62.6 mph | compare → |
| 275/35R17 | 24.58" | -0.16% | +60 mm | 59.9 mph | calculate → |
| 225/40R17 | 24.09" | -2.16% | +10 mm | 58.7 mph | calculate → |
| 265/40R17 | 25.35" | +2.96% | +50 mm | 61.8 mph | calculate → |
| 155/70R17 | 25.54" | +3.76% | -60 mm | 62.3 mph | calculate → |
| 295/35R17 | 25.13" | +2.08% | +80 mm | 61.2 mph | calculate → |
| 195/45R17 | 23.91" | -2.88% | -20 mm | 58.3 mph | calculate → |
| 145/70R17 | 24.99" | +1.52% | -70 mm | 60.9 mph | calculate → |
| 245/35R17 | 23.75" | -3.52% | +30 mm | 57.9 mph | calculate → |
| 185/60R17 | 25.74" | +4.56% | -30 mm | 62.7 mph | calculate → |
Plus / minus sizing: 16" and 18" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 195/55R16 common | 24.44" | -0.70% | -20 mm | 59.6 mph | compare → |
| 245/35R18 common | 24.75" | +0.54% | +30 mm | 60.3 mph | compare → |
| 225/50R16 common | 24.86" | +0.98% | +10 mm | 60.6 mph | compare → |
| 215/40R18 | 24.77" | +0.62% | 0 mm | 60.4 mph | compare → |
| 285/30R18 | 24.73" | +0.46% | +70 mm | 60.3 mph | compare → |
| 205/40R18 | 24.46" | -0.66% | -10 mm | 59.6 mph | compare → |
| 245/45R16 | 24.68" | +0.26% | +30 mm | 60.2 mph | compare → |
| 185/60R16 | 24.74" | +0.50% | -30 mm | 60.3 mph | calculate → |
| 235/35R18 | 24.48" | -0.58% | +20 mm | 59.7 mph | calculate → |
| 215/50R16 | 24.46" | -0.62% | 0 mm | 59.6 mph | calculate → |
Try another size against 215/45R17
Questions
What size is 215/45R17 in inches?
215/45R17 is about 24.6" tall and 8.5" wide on a 17-inch rim — roughly a 24.5x8.50R17 in inch sizing.
What does 215/45R17 mean?
215 mm section width, sidewall 45% of the width (3.81"), radial construction, 17-inch rim.
What tire sizes are equivalent to 215/45R17?
On the same 17" rim, within 3% of the diameter: 275/35R17 (-0.16%), 245/40R17 (+0.40%), 235/40R17 (-0.88%), 225/45R17 (+1.44%), 205/45R17 (-1.44%), 145/70R17 (+1.52%).
How many revolutions per mile does a 215/45R17 tire make?
About 819 revolutions per mile (circumference 77.3").
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.