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Tire Size Comparison

195/60R15 vs 215/55R16

Switching from 195/60R15 to 215/55R16 changes overall diameter by +4.54% (24.21 in → 25.31 in).

+4.54%Borderline — noticeable speedometer/odometer error

Speedometer error

With a speedometer calibrated to 195/60R15, fitting 215/55R16 makes it read as follows:

Speedo showsTrue speedSpeedo showsTrue speed
40 km/h41.8 km/h25 mph26 mph
60 km/h62.7 km/h37 mph39 mph
80 km/h83.6 km/h50 mph52 mph
100 km/h104.5 km/h62 mph65 mph
120 km/h125.4 km/h75 mph78 mph

Full comparison

195/60R15
Overall diameter615.0 mm · 24.21 in
Section width195 mm · 7.68 in
Sidewall height117.0 mm · 4.61 in
Circumference1932.1 mm · 76.1 in
Revolutions per mile833
Revolutions per km518
215/55R16
Overall diameter642.9 mm · 25.31 in
Section width215 mm · 8.46 in
Sidewall height118.3 mm · 4.66 in
Circumference2019.7 mm · 79.5 in
Revolutions per mile797
Revolutions per km495
Original tire
New tire
+4.54%Borderline — noticeable speedometer/odometer error
24.225.3
Original
Overall diameter615 mm · 24.21 in
Sidewall height117 mm
Circumference1,932.1 mm
Revolutions / mile833
New
Overall diameter642.9 mm · 25.31 in
Sidewall height118.3 mm
Circumference2,019.7 mm
Revolutions / mile796.8
Speedometer & odometer error

The new tire changes overall diameter by +4.54%. With a speedometer calibrated to the original tire, that same percentage is how far the speedometer and odometer read off — a taller tire means your true speed is higher than indicated and the odometer under-counts distance.

Speedo showsTrue speedSpeedo showsTrue speed
40 km/h41.8 km/h25 mph26 mph
60 km/h62.7 km/h37 mph39 mph
80 km/h83.6 km/h50 mph52 mph
100 km/h104.5 km/h62 mph65 mph
120 km/h125.4 km/h75 mph78 mph

See individual specs: 195/60R15 · 215/55R16. A change this size can affect ABS/speed calibration — see wheel-speed codes if a light appears.