Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r26 vs 305/30r26 Tire Comparison Side By Side
  295/25-26 305/30-26 Difference
Diameter inches (mm) 31.81 (807.9) 33.2 (843.4) 1.4 (35.5) 4.4%
Width inches (mm) 11.61 (295) 12.01 (305) 0.39 (10) 3.4%
Circum. inches (mm) 99.92 (2538.09) 104.32 (2649.62) 4.39 (111.53) 4.4%
Sidewall Height inches (mm) 2.9 (73.75) 3.6 (91.5) 0.7 (17.75) 24.1%
Revolutions per mile (km) 634.08 (394) 607.39 (377.41) -26.69 (-16.58) -4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.88 mph (33.6 km/h)
25 mph (40.23 km/h)26.1 mph (42 km/h)
30 mph (48.28 km/h)31.32 mph (50.4 km/h)
35 mph (56.33 km/h)36.54 mph (58.8 km/h)
40 mph (64.37 km/h)41.76 mph (67.2 km/h)
45 mph (72.42 km/h)46.98 mph (75.6 km/h)
50 mph (80.47 km/h)52.2 mph (84 km/h)
55 mph (88.51 km/h)57.42 mph (92.4 km/h)
60 mph (96.56 km/h)62.64 mph (100.8 km/h)
65 mph (104.61 km/h)67.86 mph (109.2 km/h)
70 mph (112.65 km/h)73.08 mph (117.6 km/h)
75 mph (120.7 km/h)78.3 mph (126 km/h)
80 mph (128.75 km/h)83.52 mph (134.41 km/h)
85 mph (136.79 km/h)88.73 mph (142.81 km/h)
90 mph (144.84 km/h)93.95 mph (151.21 km/h)
95 mph (152.89 km/h)99.17 mph (159.61 km/h)
100 mph (160.93 km/h)104.39 mph (168.01 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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