Comparison of tire sizes 245/60 R18 and 255/60 R17

245/60R18




245mm147mm751mm2360mm
245
60
18
255
60
17
Parameters Sizes | Old | New | |||
---|---|---|---|---|---|
Diameter, mm | 751 | 738 | -13 (-1.7%) | ||
Width, mm | 245 | 255 | +10 (+4.1%) | ||
Circumference, mm | 2360 | 2318 | -42 (-1.8%) | ||
Profile height, mm | 147 | 153 | +6 (+4.1%) | ||
RPM per km | 424 | 431 | +7 (+1.7%) | ||
Clearance change, mm | -7 | ||||
Result: | The diameter differs by -1.7%. |
Speedometer reading (km/h) | |
---|---|
Real speed (km/h) | 98.2 |
Difference (km/h) | -1.8 |
Sizes for comparison of tires 245/60 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Sizes for comparison of tires 255/60 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2