26.7" tall, 8.1" wide, 4.8" sidewall
A 205/60R17 tire is 26.7 inches (678 mm) tall and 8.1 inches wide. The sidewall is 60% of the width, 4.8 inches, on a 17-inch wheel, and the tire turns about 756 times per mile.
In flotation terms that is about 26.7x8.1R17. People often call it a 27-inch tire.
The size most often compared with it is 205/65R17, which is 0.8" taller (+3.0%). At an indicated 60 mph you would be doing 61.8 mph on it, more than the 3% change many shops use as a limit.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 17" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 205/60R17 | |
|---|---|---|---|---|---|
| 205/65R17 | 27.5" | 8.1" | 5.2" | +3.0% | |
| 185/55R17 | 25.0" | 7.3" | 4.0" | −6.3% | |
| 225/70R17 | 29.4" | 8.9" | 6.2" | +10.2% |
Sizes within 2% of 26.7" on 18" or 15" or 19" wheels.
| Size | Diameter | Width | Sidewall | vs 205/60R17 | |
|---|---|---|---|---|---|
| 275/40R18 | 26.7" | 10.8" | 4.3" | −0.1% | |
| 295/50R15 | 26.6" | 11.6" | 5.8" | −0.3% | |
| 245/60R15 | 26.6" | 9.6" | 5.8" | −0.4% | |
| 215/70R15 | 26.9" | 8.5" | 5.9" | +0.6% | |
| 285/35R19 | 26.9" | 11.2" | 3.9" | +0.6% | |
| 275/55R15 | 26.9" | 10.8" | 6.0" | +0.8% |
Actual speed when the speedometer is calibrated for 205/60R17.
| Speedometer shows | on 205/65R17 | on 185/55R17 | on 225/70R17 |
|---|---|---|---|
| 30 mph | 30.9 mph | 28.1 mph | 33.1 mph |
| 45 mph | 46.4 mph | 42.2 mph | 49.6 mph |
| 60 mph | 61.8 mph | 56.2 mph | 66.1 mph |
| 70 mph | 72.1 mph | 65.6 mph | 77.1 mph |
26.7 inches (678 mm). The sidewall is 4.8 inches.
8.1 inches (205 mm) section width, measured sidewall to sidewall.
About 26.7x8.1R17.
205/65R17 is +3.0% in diameter, more than the common 3% guideline, so expect a speedometer error and check clearance. It is 0.0" wider.