Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
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295/25r20 vs 235/35r19 Tire Comparison Side By Side
  295/25-20 235/35-19 Difference
Diameter inches (mm) 25.81 (655.5) 25.48 (647.1) -0.33 (-8.4) -1.3%
Width inches (mm) 11.61 (295) 9.25 (235) -2.36 (-60) -20.3%
Circum. inches (mm) 81.08 (2059.31) 80.04 (2032.92) -1.04 (-26.39) -1.3%
Sidewall Height inches (mm) 2.9 (73.75) 3.24 (82.25) 0.33 (8.5) 11.5%
Revolutions per mile (km) 781.5 (485.6) 791.64 (491.9) 10.14 (6.3) 1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.74 mph (31.77 km/h)
25 mph (40.23 km/h)24.68 mph (39.72 km/h)
30 mph (48.28 km/h)29.62 mph (47.66 km/h)
35 mph (56.33 km/h)34.55 mph (55.61 km/h)
40 mph (64.37 km/h)39.49 mph (63.55 km/h)
45 mph (72.42 km/h)44.42 mph (71.49 km/h)
50 mph (80.47 km/h)49.36 mph (79.44 km/h)
55 mph (88.51 km/h)54.3 mph (87.38 km/h)
60 mph (96.56 km/h)59.23 mph (95.32 km/h)
65 mph (104.61 km/h)64.17 mph (103.27 km/h)
70 mph (112.65 km/h)69.1 mph (111.21 km/h)
75 mph (120.7 km/h)74.04 mph (119.15 km/h)
80 mph (128.75 km/h)78.97 mph (127.1 km/h)
85 mph (136.79 km/h)83.91 mph (135.04 km/h)
90 mph (144.84 km/h)88.85 mph (142.99 km/h)
95 mph (152.89 km/h)93.78 mph (150.93 km/h)
100 mph (160.93 km/h)98.72 mph (158.87 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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