Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/50r16 vs 295/50r16 Tire Comparison Side By Side
  255/50-16 295/50-16 Difference
Diameter inches (mm) 26.04 (661.4) 27.61 (701.4) 1.57 (40) 6%
Width inches (mm) 10.04 (255) 11.61 (295) 1.57 (40) 15.7%
Circum. inches (mm) 81.81 (2077.85) 86.75 (2203.51) 4.95 (125.66) 6%
Sidewall Height inches (mm) 5.02 (127.5) 5.81 (147.5) 0.79 (20) 15.7%
Revolutions per mile (km) 774.52 (481.27) 730.35 (453.82) -44.17 (-27.45) -5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.21 mph (34.13 km/h)
25 mph (40.23 km/h)26.51 mph (42.67 km/h)
30 mph (48.28 km/h)31.81 mph (51.2 km/h)
35 mph (56.33 km/h)37.12 mph (59.73 km/h)
40 mph (64.37 km/h)42.42 mph (68.27 km/h)
45 mph (72.42 km/h)47.72 mph (76.8 km/h)
50 mph (80.47 km/h)53.02 mph (85.33 km/h)
55 mph (88.51 km/h)58.33 mph (93.87 km/h)
60 mph (96.56 km/h)63.63 mph (102.4 km/h)
65 mph (104.61 km/h)68.93 mph (110.93 km/h)
70 mph (112.65 km/h)74.23 mph (119.47 km/h)
75 mph (120.7 km/h)79.54 mph (128 km/h)
80 mph (128.75 km/h)84.84 mph (136.53 km/h)
85 mph (136.79 km/h)90.14 mph (145.07 km/h)
90 mph (144.84 km/h)95.44 mph (153.6 km/h)
95 mph (152.89 km/h)100.75 mph (162.13 km/h)
100 mph (160.93 km/h)106.05 mph (170.67 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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