Comparison of tire sizes 155/65 R14 and 155/65 R15
155/65R14
155
Tire width 
65
Profile height 
R14
Tire diameter 
571
RPM per km 155mm101mm557mm1750mm
155
65
14
155
65
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 557 | 583 | +26 (+4.7%) | ||
| Width, mm | 155 | 155 | 0 (0%) | ||
| Circumference, mm | 1750 | 1830 | +80 (+4.6%) | ||
| Profile height, mm | 101 | 101 | 0 (0%) | ||
| RPM per km | 571 | 546 | -25 (-4.4%) | ||
| Clearance change, mm | +13 | ||||
| Result: | The diameter differs by 4.7%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 104.6 |
| Difference (km/h) | 4.6 |
Sizes for comparison of tires 155/65 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 155/65 R15
R15
R14 -1
R16 +1
R13 -2