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 235/75r16 Tire Comparison Side By Side
  195/70-16 235/75-16 Difference
Diameter inches (mm) 26.75 (679.4) 29.88 (758.9) 3.13 (79.5) 11.7%
Width inches (mm) 7.68 (195) 9.25 (235) 1.57 (40) 20.5%
Circum. inches (mm) 84.03 (2134.4) 93.86 (2384.15) 9.83 (249.76) 11.7%
Sidewall Height inches (mm) 5.37 (136.5) 6.94 (176.25) 1.56 (39.75) 29.1%
Revolutions per mile (km) 754 (468.52) 675.02 (419.44) -78.99 (-49.08) -10.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.34 mph (35.95 km/h)
25 mph (40.23 km/h)27.93 mph (44.94 km/h)
30 mph (48.28 km/h)33.51 mph (53.93 km/h)
35 mph (56.33 km/h)39.1 mph (62.92 km/h)
40 mph (64.37 km/h)44.68 mph (71.91 km/h)
45 mph (72.42 km/h)50.27 mph (80.89 km/h)
50 mph (80.47 km/h)55.85 mph (89.88 km/h)
55 mph (88.51 km/h)61.44 mph (98.87 km/h)
60 mph (96.56 km/h)67.02 mph (107.86 km/h)
65 mph (104.61 km/h)72.61 mph (116.85 km/h)
70 mph (112.65 km/h)78.19 mph (125.84 km/h)
75 mph (120.7 km/h)83.78 mph (134.82 km/h)
80 mph (128.75 km/h)89.36 mph (143.81 km/h)
85 mph (136.79 km/h)94.95 mph (152.8 km/h)
90 mph (144.84 km/h)100.53 mph (161.79 km/h)
95 mph (152.89 km/h)106.12 mph (170.78 km/h)
100 mph (160.93 km/h)111.7 mph (179.77 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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