Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/60r20 vs 295/60r20 Tire Comparison Side By Side
  265/60-20 295/60-20 Difference
Diameter inches (mm) 32.52 (826) 33.94 (862) 1.42 (36) 4.4%
Width inches (mm) 10.43 (265) 11.61 (295) 1.18 (30) 11.3%
Circum. inches (mm) 102.16 (2594.96) 106.62 (2708.05) 4.45 (113.1) 4.4%
Sidewall Height inches (mm) 6.26 (159) 6.97 (177) 0.71 (18) 11.3%
Revolutions per mile (km) 620.18 (385.36) 594.28 (369.27) -25.9 (-16.09) -4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.87 mph (33.59 km/h)
25 mph (40.23 km/h)26.09 mph (41.99 km/h)
30 mph (48.28 km/h)31.31 mph (50.38 km/h)
35 mph (56.33 km/h)36.53 mph (58.78 km/h)
40 mph (64.37 km/h)41.74 mph (67.18 km/h)
45 mph (72.42 km/h)46.96 mph (75.58 km/h)
50 mph (80.47 km/h)52.18 mph (83.97 km/h)
55 mph (88.51 km/h)57.4 mph (92.37 km/h)
60 mph (96.56 km/h)62.62 mph (100.77 km/h)
65 mph (104.61 km/h)67.83 mph (109.17 km/h)
70 mph (112.65 km/h)73.05 mph (117.56 km/h)
75 mph (120.7 km/h)78.27 mph (125.96 km/h)
80 mph (128.75 km/h)83.49 mph (134.36 km/h)
85 mph (136.79 km/h)88.7 mph (142.76 km/h)
90 mph (144.84 km/h)93.92 mph (151.15 km/h)
95 mph (152.89 km/h)99.14 mph (159.55 km/h)
100 mph (160.93 km/h)104.36 mph (167.95 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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