Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r13 vs 215/50r13 Tire Comparison Side By Side
  195/60-13 215/50-13 Difference
Diameter inches (mm) 22.21 (564.2) 21.46 (545.2) -0.75 (-19) -3.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 69.78 (1772.49) 67.43 (1712.8) -2.35 (-59.69) -3.4%
Sidewall Height inches (mm) 4.61 (117) 4.23 (107.5) -0.37 (-9.5) -8.1%
Revolutions per mile (km) 907.96 (564.18) 939.6 (583.84) 31.64 (19.66) 3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.33 mph (31.1 km/h)
25 mph (40.23 km/h)24.16 mph (38.88 km/h)
30 mph (48.28 km/h)28.99 mph (46.65 km/h)
35 mph (56.33 km/h)33.82 mph (54.43 km/h)
40 mph (64.37 km/h)38.65 mph (62.21 km/h)
45 mph (72.42 km/h)43.48 mph (69.98 km/h)
50 mph (80.47 km/h)48.32 mph (77.76 km/h)
55 mph (88.51 km/h)53.15 mph (85.53 km/h)
60 mph (96.56 km/h)57.98 mph (93.31 km/h)
65 mph (104.61 km/h)62.81 mph (101.08 km/h)
70 mph (112.65 km/h)67.64 mph (108.86 km/h)
75 mph (120.7 km/h)72.47 mph (116.64 km/h)
80 mph (128.75 km/h)77.31 mph (124.41 km/h)
85 mph (136.79 km/h)82.14 mph (132.19 km/h)
90 mph (144.84 km/h)86.97 mph (139.96 km/h)
95 mph (152.89 km/h)91.8 mph (147.74 km/h)
100 mph (160.93 km/h)96.63 mph (155.52 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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