Comparison
255/40 R17 vs 205/55 R16
Compared to 255/40 R17, 205/55 R16 is 3.9 mm shorter and changes the speedometer reading by -0.61%.
Current Tire
255/40R17
New Tire
205/55R16
255/40 R17
205/55 R16
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-3.9 mm
-0.61%
Speedometer at 100
99.4 km/h
-0.61% error
Ground clearance
-1.9 mm
ride height delta
Sidewall change
+10.8 mm
revs/km: 503.7
Permalink for this comparison:
/compare/255-40-r17-vs-205-55-r16Detailed comparison
| Metric | 255/40 R17 | 205/55 R16 | Difference |
|---|---|---|---|
| Overall diameter | 635.8 mm | 631.9 mm | -3.9 mm (-0.61%) |
| Sidewall height | 102.0 mm | 112.8 mm | +10.8 mm |
| Circumference | 1.997 m | 1.985 m | -12.3 mm |
| Revs / km | 500.6 | 503.7 | +3.1 |
| Ground clearance | reference | -1.9 mm | -1.9 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 99.4 km/h | -0.61 km/h |
Verdict: excellent
Within ±3% — speedometer, ABS and traction control should behave normally.
Back to
255/40 R17
Back to
205/55 R16