245/50R17 tire size
245/50R17 is a metric size: 26.6" tall, 9.6" wide, on a 17" rim — about a 26.5x9.50R17. The sidewall is 4.8" and the tire turns 757 times per mile.
245/50R17 specs
| Overall diameter (height) | 26.65" · 677 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 4.82" · 123 mm (50% of width) |
| Rim diameter | 17" |
| Circumference | 83.71" · 2.126 m |
| Revolutions per mile | 757 (470 per km) |
| Inch (flotation) equivalent | 26.5x9.50R17 |
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 | |
|---|---|---|---|---|---|
| 225/50R17 common | 25.86" | -2.96% | -20 mm | 58.2 mph | compare → |
| 225/55R17 common | 26.74" | +0.37% | -20 mm | 60.2 mph | compare → |
| 235/55R17 common | 27.18" | +1.99% | -10 mm | 61.2 mph | compare → |
| 215/55R17 common | 26.31" | -1.26% | -30 mm | 59.2 mph | compare → |
| 225/60R17 common | 27.63" | +3.69% | -20 mm | 62.2 mph | compare → |
| 215/50R17 common | 25.46" | -4.43% | -30 mm | 57.3 mph | compare → |
| 235/45R17 common | 25.33" | -4.95% | -10 mm | 57.0 mph | compare → |
| 245/45R17 common | 25.68" | -3.62% | 0 mm | 57.8 mph | compare → |
| 215/60R17 common | 27.16" | +1.92% | -30 mm | 61.2 mph | compare → |
| 235/50R17 common | 26.25" | -1.48% | -10 mm | 59.1 mph | compare → |
| 205/55R17 | 25.88" | -2.88% | -40 mm | 58.3 mph | compare → |
| 275/40R17 | 25.66" | -3.69% | +30 mm | 57.8 mph | compare → |
| 255/45R17 | 26.04" | -2.29% | +10 mm | 58.6 mph | compare → |
| 315/35R17 | 25.68" | -3.62% | +70 mm | 57.8 mph | compare → |
| 245/55R17 | 27.61" | +3.62% | 0 mm | 62.2 mph | calculate → |
| 335/35R17 | 26.23" | -1.55% | +90 mm | 59.1 mph | calculate → |
| 255/50R17 | 27.04" | +1.48% | +10 mm | 60.9 mph | calculate → |
| 195/60R17 | 26.21" | -1.63% | -50 mm | 59.0 mph | calculate → |
| 285/40R17 | 25.98" | -2.51% | +40 mm | 58.5 mph | calculate → |
| 165/80R17 | 27.39" | +2.81% | -80 mm | 61.7 mph | calculate → |
| 155/70R17 | 25.54" | -4.14% | -90 mm | 57.5 mph | calculate → |
| 305/45R17 | 27.81" | +4.36% | +60 mm | 62.6 mph | calculate → |
| 265/40R17 | 25.35" | -4.88% | +20 mm | 57.1 mph | calculate → |
| 155/80R17 | 26.76" | +0.44% | -90 mm | 60.3 mph | calculate → |
| 145/80R17 | 26.13" | -1.92% | -100 mm | 58.8 mph | calculate → |
| 175/65R17 | 25.96" | -2.59% | -70 mm | 58.4 mph | calculate → |
| 145/90R17 | 27.28" | +2.36% | -100 mm | 61.4 mph | calculate → |
| 26x6.00R17 | 26.00" | -2.42% | -93 mm | 58.5 mph | calculate → |
| 185/60R17 | 25.74" | -3.40% | -60 mm | 58.0 mph | calculate → |
| 275/50R17 | 27.83" | +4.43% | +30 mm | 62.7 mph | calculate → |
| 205/60R17 | 26.69" | +0.15% | -40 mm | 60.1 mph | calculate → |
| 295/40R17 | 26.29" | -1.33% | +50 mm | 59.2 mph | calculate → |
| 165/70R17 | 26.09" | -2.07% | -80 mm | 58.8 mph | calculate → |
| 205/65R17 | 27.49" | +3.18% | -40 mm | 61.9 mph | calculate → |
| 345/40R17 | 27.87" | +4.58% | +100 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 | |
|---|---|---|---|---|---|
| 245/45R18 common | 26.68" | +0.13% | 0 mm | 60.1 mph | compare → |
| 225/50R18 common | 26.86" | +0.80% | -20 mm | 60.5 mph | compare → |
| 205/65R16 common | 26.49" | -0.58% | -40 mm | 59.7 mph | compare → |
| 225/60R16 common | 26.63" | -0.06% | -20 mm | 60.0 mph | compare → |
| 275/40R18 common | 26.66" | +0.06% | +30 mm | 60.0 mph | compare → |
| 215/50R18 | 26.46" | -0.68% | -30 mm | 59.6 mph | compare → |
| 305/35R18 | 26.41" | -0.90% | +60 mm | 59.5 mph | calculate → |
| 155/70R18 | 26.54" | -0.38% | -90 mm | 59.8 mph | calculate → |
| 315/35R18 | 26.68" | +0.13% | +70 mm | 60.1 mph | calculate → |
Try another size against 245/50R17
Questions
What size is 245/50R17 in inches?
245/50R17 is about 26.6" tall and 9.6" wide on a 17-inch rim — roughly a 26.5x9.50R17 in inch sizing.
What does 245/50R17 mean?
245 mm section width, sidewall 50% of the width (4.82"), radial construction, 17-inch rim.
What tire sizes are equivalent to 245/50R17?
On the same 17" rim, within 3% of the diameter: 205/60R17 (+0.15%), 225/55R17 (+0.37%), 155/80R17 (+0.44%), 215/55R17 (-1.26%), 295/40R17 (-1.33%), 255/50R17 (+1.48%).
How many revolutions per mile does a 245/50R17 tire make?
About 757 revolutions per mile (circumference 83.7").
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.