Comparison of tire sizes 205/70 R14 and 185/65 R15

205/70R14
205 Tire width
70 Profile height
R14 Tire diameter
495 RPM per km
205mm144mm643mm2019mm
205
70
14
185
65
15
Parameters Sizes Old New
Diameter, mm643622-21 (-3.3%)
Width, mm205185-20 (-9.8%)
Circumference, mm20191952-67 (-3.3%)
Profile height, mm144120-24 (-16.7%)
RPM per km495512+17 (+3.4%)
Clearance change, mm-11
Result:
The diameter differs by -3.3%.
Speedometer reading (km/h)
Real speed (km/h)96.7
Difference (km/h)-3.3

Sizes for comparison of tires 205/70 R14

R14
R15 +1
R16 +2

Sizes for comparison of tires 185/65 R15

R15
R14 -1
R16 +1
R13 -2
R17 +2

Ads by size 185/65 R15