Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/70r16 vs 275/75r16 Tire Comparison Side By Side
  265/70-16 275/75-16 Difference
Diameter inches (mm) 30.61 (777.4) 32.24 (818.9) 1.63 (41.5) 5.3%
Width inches (mm) 10.43 (265) 10.83 (275) 0.39 (10) 3.8%
Circum. inches (mm) 96.15 (2442.27) 101.29 (2572.65) 5.13 (130.38) 5.3%
Sidewall Height inches (mm) 7.3 (185.5) 8.12 (206.25) 0.82 (20.75) 11.2%
Revolutions per mile (km) 658.95 (409.45) 625.56 (388.7) -33.39 (-20.75) -5.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.07 mph (33.91 km/h)
25 mph (40.23 km/h)26.33 mph (42.38 km/h)
30 mph (48.28 km/h)31.6 mph (50.86 km/h)
35 mph (56.33 km/h)36.87 mph (59.33 km/h)
40 mph (64.37 km/h)42.14 mph (67.81 km/h)
45 mph (72.42 km/h)47.4 mph (76.29 km/h)
50 mph (80.47 km/h)52.67 mph (84.76 km/h)
55 mph (88.51 km/h)57.94 mph (93.24 km/h)
60 mph (96.56 km/h)63.2 mph (101.72 km/h)
65 mph (104.61 km/h)68.47 mph (110.19 km/h)
70 mph (112.65 km/h)73.74 mph (118.67 km/h)
75 mph (120.7 km/h)79 mph (127.14 km/h)
80 mph (128.75 km/h)84.27 mph (135.62 km/h)
85 mph (136.79 km/h)89.54 mph (144.1 km/h)
90 mph (144.84 km/h)94.8 mph (152.57 km/h)
95 mph (152.89 km/h)100.07 mph (161.05 km/h)
100 mph (160.93 km/h)105.34 mph (169.53 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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