Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/70r16 vs 215/70r16 Tire Comparison Side By Side
  195/70-16 215/70-16 Difference
Diameter inches (mm) 26.75 (679.4) 27.85 (707.4) 1.1 (28) 4.1%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 84.03 (2134.4) 87.49 (2222.36) 3.46 (87.96) 4.1%
Sidewall Height inches (mm) 5.37 (136.5) 5.93 (150.5) 0.55 (14) 10.3%
Revolutions per mile (km) 754 (468.52) 724.16 (449.97) -29.84 (-18.54) -4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.82 mph (33.51 km/h)
25 mph (40.23 km/h)26.03 mph (41.89 km/h)
30 mph (48.28 km/h)31.24 mph (50.27 km/h)
35 mph (56.33 km/h)36.44 mph (58.65 km/h)
40 mph (64.37 km/h)41.65 mph (67.03 km/h)
45 mph (72.42 km/h)46.85 mph (75.41 km/h)
50 mph (80.47 km/h)52.06 mph (83.78 km/h)
55 mph (88.51 km/h)57.27 mph (92.16 km/h)
60 mph (96.56 km/h)62.47 mph (100.54 km/h)
65 mph (104.61 km/h)67.68 mph (108.92 km/h)
70 mph (112.65 km/h)72.88 mph (117.3 km/h)
75 mph (120.7 km/h)78.09 mph (125.68 km/h)
80 mph (128.75 km/h)83.3 mph (134.05 km/h)
85 mph (136.79 km/h)88.5 mph (142.43 km/h)
90 mph (144.84 km/h)93.71 mph (150.81 km/h)
95 mph (152.89 km/h)98.92 mph (159.19 km/h)
100 mph (160.93 km/h)104.12 mph (167.57 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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