Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/80r16 vs 295/95r15 Tire Comparison Side By Side
  135/80-16 295/95-15 Difference
Diameter inches (mm) 24.5 (622.4) 37.07 (941.5) 12.56 (319.1) 51.3%
Width inches (mm) 5.31 (135) 11.61 (295) 6.3 (160) 118.5%
Circum. inches (mm) 76.98 (1955.33) 116.45 (2957.81) 39.47 (1002.48) 51.3%
Sidewall Height inches (mm) 4.25 (108) 11.03 (280.25) 6.78 (172.25) 159.5%
Revolutions per mile (km) 823.06 (511.42) 544.1 (338.09) -278.96 (-173.33) -33.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)30.25 mph (48.69 km/h)
25 mph (40.23 km/h)37.82 mph (60.86 km/h)
30 mph (48.28 km/h)45.38 mph (73.03 km/h)
35 mph (56.33 km/h)52.94 mph (85.21 km/h)
40 mph (64.37 km/h)60.51 mph (97.38 km/h)
45 mph (72.42 km/h)68.07 mph (109.55 km/h)
50 mph (80.47 km/h)75.63 mph (121.72 km/h)
55 mph (88.51 km/h)83.2 mph (133.89 km/h)
60 mph (96.56 km/h)90.76 mph (146.07 km/h)
65 mph (104.61 km/h)98.33 mph (158.24 km/h)
70 mph (112.65 km/h)105.89 mph (170.41 km/h)
75 mph (120.7 km/h)113.45 mph (182.58 km/h)
80 mph (128.75 km/h)121.02 mph (194.76 km/h)
85 mph (136.79 km/h)128.58 mph (206.93 km/h)
90 mph (144.84 km/h)136.14 mph (219.1 km/h)
95 mph (152.89 km/h)143.71 mph (231.27 km/h)
100 mph (160.93 km/h)151.27 mph (243.44 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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