225/50R13 tire size
225/50R13 is a metric size: 21.9" tall, 8.9" wide, on a 13" rim — about a 22x9.00R13. The sidewall is 4.4" and the tire turns 923 times per mile.
225/50R13 specs
| Overall diameter (height) | 21.86" · 555 mm |
|---|---|
| Section width | 8.86" · 225 mm |
| Sidewall height | 4.43" · 113 mm (50% of width) |
| Rim diameter | 13" |
| Circumference | 68.67" · 1.744 m |
| Revolutions per mile | 923 (573 per km) |
| Inch (flotation) equivalent | 22x9.00R13 |
Equivalent sizes on a 13" 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 | |
|---|---|---|---|---|---|
| 185/60R13 | 21.74" | -0.54% | -40 mm | 59.7 mph | calculate → |
| 175/65R13 | 21.96" | +0.45% | -50 mm | 60.3 mph | calculate → |
| 22x8.00R13 | 22.00" | +0.65% | -22 mm | 60.4 mph | calculate → |
| 185/65R13 | 22.47" | +2.79% | -40 mm | 61.7 mph | calculate → |
| 155/70R13 | 21.54" | -1.44% | -70 mm | 59.1 mph | calculate → |
| 215/50R13 | 21.46" | -1.80% | -10 mm | 58.9 mph | calculate → |
| 165/65R13 | 21.44" | -1.89% | -60 mm | 58.9 mph | calculate → |
| 145R13 | 22.36" | +2.31% | -80 mm | 61.4 mph | calculate → |
Try another size against 225/50R13
Questions
What size is 225/50R13 in inches?
225/50R13 is about 21.9" tall and 8.9" wide on a 13-inch rim — roughly a 22x9.00R13 in inch sizing.
What does 225/50R13 mean?
225 mm section width, sidewall 50% of the width (4.43"), radial construction, 13-inch rim.
What tire sizes are equivalent to 225/50R13?
On the same 13" rim, within 3% of the diameter: 175/65R13 (+0.45%), 185/60R13 (-0.54%), 22x8.00R13 (+0.65%), 155/70R13 (-1.44%), 215/50R13 (-1.80%), 165/65R13 (-1.89%).
How many revolutions per mile does a 225/50R13 tire make?
About 923 revolutions per mile (circumference 68.7").
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.