Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/35r15 vs 285/50r15 Tire Comparison Side By Side
  295/35-15 285/50-15 Difference
Diameter inches (mm) 23.13 (587.5) 26.22 (666) 3.09 (78.5) 13.4%
Width inches (mm) 11.61 (295) 11.22 (285) -0.39 (-10) -3.4%
Circum. inches (mm) 72.66 (1845.69) 82.37 (2092.3) 9.71 (246.62) 13.4%
Sidewall Height inches (mm) 4.06 (103.25) 5.61 (142.5) 1.55 (39.25) 38%
Revolutions per mile (km) 871.95 (541.8) 769.17 (477.94) -102.77 (-63.86) -11.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.67 mph (36.49 km/h)
25 mph (40.23 km/h)28.34 mph (45.61 km/h)
30 mph (48.28 km/h)34.01 mph (54.73 km/h)
35 mph (56.33 km/h)39.68 mph (63.85 km/h)
40 mph (64.37 km/h)45.34 mph (72.98 km/h)
45 mph (72.42 km/h)51.01 mph (82.1 km/h)
50 mph (80.47 km/h)56.68 mph (91.22 km/h)
55 mph (88.51 km/h)62.35 mph (100.34 km/h)
60 mph (96.56 km/h)68.02 mph (109.46 km/h)
65 mph (104.61 km/h)73.69 mph (118.58 km/h)
70 mph (112.65 km/h)79.35 mph (127.71 km/h)
75 mph (120.7 km/h)85.02 mph (136.83 km/h)
80 mph (128.75 km/h)90.69 mph (145.95 km/h)
85 mph (136.79 km/h)96.36 mph (155.07 km/h)
90 mph (144.84 km/h)102.03 mph (164.19 km/h)
95 mph (152.89 km/h)107.69 mph (173.32 km/h)
100 mph (160.93 km/h)113.36 mph (182.44 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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