Comparison of tire sizes 285/70 R17 and 285/60 R18

285/70R17




285mm200mm831mm2610mm
285
70
17
285
60
18
Parameters Sizes | Old | New | |||
---|---|---|---|---|---|
Diameter, mm | 831 | 799 | -32 (-3.9%) | ||
Width, mm | 285 | 285 | 0 (0%) | ||
Circumference, mm | 2610 | 2511 | -99 (-3.8%) | ||
Profile height, mm | 200 | 171 | -29 (-14.5%) | ||
RPM per km | 383 | 398 | +15 (+3.9%) | ||
Clearance change, mm | -16 | ||||
Result: | The diameter differs by -3.9%. |
Speedometer reading (km/h) | |
---|---|
Real speed (km/h) | 96.2 |
Difference (km/h) | -3.8 |
Sizes for comparison of tires 285/70 R17
R17
R16 -1
R18 +1
Sizes for comparison of tires 285/60 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2