Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
305/75r17 vs 295/75r17 Tire Comparison Side By Side
  305/75-17 295/75-17 Difference
Diameter inches (mm) 35.01 (889.3) 34.42 (874.3) -0.59 (-15) -1.7%
Width inches (mm) 12.01 (305) 11.61 (295) -0.39 (-10) -3.3%
Circum. inches (mm) 109.99 (2793.82) 108.14 (2746.69) -1.86 (-47.12) -1.7%
Sidewall Height inches (mm) 9.01 (228.75) 8.71 (221.25) -0.3 (-7.5) -3.3%
Revolutions per mile (km) 576.04 (357.93) 585.92 (364.07) 9.88 (6.14) 1.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.66 mph (31.64 km/h)
25 mph (40.23 km/h)24.58 mph (39.56 km/h)
30 mph (48.28 km/h)29.49 mph (47.47 km/h)
35 mph (56.33 km/h)34.41 mph (55.38 km/h)
40 mph (64.37 km/h)39.33 mph (63.29 km/h)
45 mph (72.42 km/h)44.24 mph (71.2 km/h)
50 mph (80.47 km/h)49.16 mph (79.11 km/h)
55 mph (88.51 km/h)54.07 mph (87.02 km/h)
60 mph (96.56 km/h)58.99 mph (94.93 km/h)
65 mph (104.61 km/h)63.9 mph (102.84 km/h)
70 mph (112.65 km/h)68.82 mph (110.75 km/h)
75 mph (120.7 km/h)73.73 mph (118.67 km/h)
80 mph (128.75 km/h)78.65 mph (126.58 km/h)
85 mph (136.79 km/h)83.57 mph (134.49 km/h)
90 mph (144.84 km/h)88.48 mph (142.4 km/h)
95 mph (152.89 km/h)93.4 mph (150.31 km/h)
100 mph (160.93 km/h)98.31 mph (158.22 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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