Comparison of tire sizes 285/70 R17 and 285/65 R17
285/70R17
285
Tire width 
70
Profile height 
R17
Tire diameter 
383
RPM per km 285mm200mm831mm2610mm
285
70
17
285
65
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 831 | 802 | -29 (-3.5%) | ||
| Width, mm | 285 | 285 | 0 (0%) | ||
| Circumference, mm | 2610 | 2520 | -90 (-3.4%) | ||
| Profile height, mm | 200 | 185 | -15 (-7.5%) | ||
| RPM per km | 383 | 397 | +14 (+3.7%) | ||
| Clearance change, mm | -15 | ||||
| Result: | The diameter differs by -3.5%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 96.6 |
| Difference (km/h) | -3.4 |
Sizes for comparison of tires 285/70 R17
R17
R16 -1
R18 +1
Sizes for comparison of tires 285/65 R17
R17
R16 -1
R18 +1
R19 +2
