Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/40r16 vs 195/55r16 Tire Comparison Side By Side
  195/40-16 195/55-16 Difference
Diameter inches (mm) 22.14 (562.4) 24.44 (620.9) 2.3 (58.5) 10.4%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 69.56 (1766.83) 76.8 (1950.61) 7.24 (183.78) 10.4%
Sidewall Height inches (mm) 3.07 (78) 4.22 (107.25) 1.15 (29.25) 37.5%
Revolutions per mile (km) 910.86 (565.98) 825.04 (512.66) -85.82 (-53.33) -9.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.08 mph (35.53 km/h)
25 mph (40.23 km/h)27.6 mph (44.42 km/h)
30 mph (48.28 km/h)33.12 mph (53.3 km/h)
35 mph (56.33 km/h)38.64 mph (62.19 km/h)
40 mph (64.37 km/h)44.16 mph (71.07 km/h)
45 mph (72.42 km/h)49.68 mph (79.95 km/h)
50 mph (80.47 km/h)55.2 mph (88.84 km/h)
55 mph (88.51 km/h)60.72 mph (97.72 km/h)
60 mph (96.56 km/h)66.24 mph (106.6 km/h)
65 mph (104.61 km/h)71.76 mph (115.49 km/h)
70 mph (112.65 km/h)77.28 mph (124.37 km/h)
75 mph (120.7 km/h)82.8 mph (133.26 km/h)
80 mph (128.75 km/h)88.32 mph (142.14 km/h)
85 mph (136.79 km/h)93.84 mph (151.02 km/h)
90 mph (144.84 km/h)99.36 mph (159.91 km/h)
95 mph (152.89 km/h)104.88 mph (168.79 km/h)
100 mph (160.93 km/h)110.4 mph (177.67 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
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