Comparison of tire sizes 285/65 R17 and 265/70 R17

285/65R17
285 Tire width
65 Profile height
R17 Tire diameter
397 RPM per km
285mm185mm802mm2520mm
285
65
17
265
70
17
Parameters Sizes Old New
Diameter, mm802803+1 (+0.1%)
Width, mm285265-20 (-7%)
Circumference, mm25202522+2 (+0.1%)
Profile height, mm185186+1 (+0.5%)
RPM per km397396-1 (-0.3%)
Clearance change, mm+1
Result:
The diameter differs by 0.1%.
Speedometer reading (km/h)
Real speed (km/h)100.1
Difference (km/h)0.1

Sizes for comparison of tires 285/65 R17

R17
R16 -1
R18 +1
R19 +2

Sizes for comparison of tires 265/70 R17

R17
R16 -1
R18 +1
R19 +2