Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/65r17 vs 265/75r16 Tire Comparison Side By Side
  265/65-17 265/75-16 Difference
Diameter inches (mm) 30.56 (776.3) 31.65 (803.9) 1.09 (27.6) 3.6%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 96.02 (2438.82) 99.43 (2525.53) 3.41 (86.71) 3.6%
Sidewall Height inches (mm) 6.78 (172.25) 7.82 (198.75) 1.04 (26.5) 15.4%
Revolutions per mile (km) 659.89 (410.03) 637.23 (395.96) -22.66 (-14.08) -3.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.71 mph (33.33 km/h)
25 mph (40.23 km/h)25.89 mph (41.66 km/h)
30 mph (48.28 km/h)31.07 mph (50 km/h)
35 mph (56.33 km/h)36.24 mph (58.33 km/h)
40 mph (64.37 km/h)41.42 mph (66.66 km/h)
45 mph (72.42 km/h)46.6 mph (75 km/h)
50 mph (80.47 km/h)51.78 mph (83.33 km/h)
55 mph (88.51 km/h)56.96 mph (91.66 km/h)
60 mph (96.56 km/h)62.13 mph (99.99 km/h)
65 mph (104.61 km/h)67.31 mph (108.33 km/h)
70 mph (112.65 km/h)72.49 mph (116.66 km/h)
75 mph (120.7 km/h)77.67 mph (124.99 km/h)
80 mph (128.75 km/h)82.84 mph (133.33 km/h)
85 mph (136.79 km/h)88.02 mph (141.66 km/h)
90 mph (144.84 km/h)93.2 mph (149.99 km/h)
95 mph (152.89 km/h)98.38 mph (158.32 km/h)
100 mph (160.93 km/h)103.56 mph (166.66 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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