225/40R17 tire size
225/40R17 is a metric size: 24.1" tall, 8.9" wide, on a 17" rim — about a 24x9.00R17. The sidewall is 3.5" and the tire turns 837 times per mile.
225/40R17 specs
| Overall diameter (height) | 24.09" · 612 mm |
|---|---|
| Section width | 8.86" · 225 mm |
| Sidewall height | 3.54" · 90 mm (40% of width) |
| Rim diameter | 17" |
| Circumference | 75.67" · 1.922 m |
| Revolutions per mile | 837 (520 per km) |
| Inch (flotation) equivalent | 24x9.00R17 |
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" | +3.68% | 0 mm | 62.2 mph | calculate → |
| 215/45R17 common | 24.62" | +2.21% | -10 mm | 61.3 mph | calculate → |
| 205/50R17 common | 25.07" | +4.09% | -20 mm | 62.5 mph | calculate → |
| 205/45R17 common | 24.26" | +0.74% | -20 mm | 60.4 mph | calculate → |
| 245/40R17 common | 24.72" | +2.62% | +20 mm | 61.6 mph | calculate → |
| 255/40R17 common | 25.03" | +3.92% | +30 mm | 62.4 mph | calculate → |
| 205/40R17 | 23.46" | -2.62% | -20 mm | 58.4 mph | calculate → |
| 235/40R17 | 24.40" | +1.31% | +10 mm | 60.8 mph | calculate → |
| 215/40R17 | 23.77" | -1.31% | -10 mm | 59.2 mph | calculate → |
| 275/35R17 | 24.58" | +2.04% | +50 mm | 61.2 mph | calculate → |
| 195/45R17 | 23.91" | -0.74% | -30 mm | 59.6 mph | calculate → |
| 295/35R17 | 25.13" | +4.33% | +70 mm | 62.6 mph | calculate → |
| 245/35R17 | 23.75" | -1.39% | +20 mm | 59.2 mph | calculate → |
| 145/70R17 | 24.99" | +3.76% | -80 mm | 62.3 mph | calculate → |
| 195/40R17 | 23.14" | -3.92% | -30 mm | 57.6 mph | calculate → |
| 225/35R17 | 23.20" | -3.68% | 0 mm | 57.8 mph | calculate → |
| 215/35R17 | 22.93" | -4.82% | -10 mm | 57.1 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 | |
|---|---|---|---|---|---|
| 205/50R16 | 24.07" | -0.07% | -20 mm | 60.0 mph | calculate → |
| 185/55R16 | 24.01" | -0.31% | -40 mm | 59.8 mph | calculate → |
| 225/35R18 | 24.20" | +0.47% | 0 mm | 60.3 mph | calculate → |
| 215/35R18 | 23.93" | -0.67% | -10 mm | 59.6 mph | calculate → |
| 225/45R16 | 23.97" | -0.47% | 0 mm | 59.7 mph | calculate → |
| 175/60R16 | 24.27" | +0.75% | -50 mm | 60.5 mph | calculate → |
Try another size against 225/40R17
Questions
What size is 225/40R17 in inches?
225/40R17 is about 24.1" tall and 8.9" wide on a 17-inch rim — roughly a 24x9.00R17 in inch sizing.
What does 225/40R17 mean?
225 mm section width, sidewall 40% of the width (3.54"), radial construction, 17-inch rim.
What tire sizes are equivalent to 225/40R17?
On the same 17" rim, within 3% of the diameter: 205/45R17 (+0.74%), 195/45R17 (-0.74%), 215/40R17 (-1.31%), 235/40R17 (+1.31%), 245/35R17 (-1.39%), 275/35R17 (+2.04%).
How many revolutions per mile does a 225/40R17 tire make?
About 837 revolutions per mile (circumference 75.7").
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.