Comparison of tire sizes 165/65 R15 and 155/65 R15
165/65R15
165
Tire width 
65
Profile height 
R15
Tire diameter 
535
RPM per km 165mm107mm596mm1871mm
165
65
15
155
65
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 596 | 583 | -13 (-2.2%) | ||
| Width, mm | 165 | 155 | -10 (-6.1%) | ||
| Circumference, mm | 1871 | 1830 | -41 (-2.2%) | ||
| Profile height, mm | 107 | 101 | -6 (-5.6%) | ||
| RPM per km | 535 | 546 | +11 (+2.1%) | ||
| Clearance change, mm | -7 | ||||
| Result: | The diameter differs by -2.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 97.8 |
| Difference (km/h) | -2.2 |
Sizes for comparison of tires 165/65 R15
R15
R14 -1
R16 +1
R13 -2
R17 +2
Sizes for comparison of tires 155/65 R15
R15
R14 -1
R16 +1
R13 -2