Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/65r16 vs 265/70r17 Tire Comparison Side By Side
  275/65-16 265/70-17 Difference
Diameter inches (mm) 30.07 (763.9) 31.61 (802.8) 1.53 (38.9) 5.1%
Width inches (mm) 10.83 (275) 10.43 (265) -0.39 (-10) -3.6%
Circum. inches (mm) 94.48 (2399.86) 99.29 (2522.07) 4.81 (122.21) 5.1%
Sidewall Height inches (mm) 7.04 (178.75) 7.3 (185.5) 0.27 (6.75) 3.8%
Revolutions per mile (km) 670.6 (416.69) 638.1 (396.5) -32.49 (-20.19) -4.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.02 mph (33.83 km/h)
25 mph (40.23 km/h)26.27 mph (42.28 km/h)
30 mph (48.28 km/h)31.53 mph (50.74 km/h)
35 mph (56.33 km/h)36.78 mph (59.2 km/h)
40 mph (64.37 km/h)42.04 mph (67.65 km/h)
45 mph (72.42 km/h)47.29 mph (76.11 km/h)
50 mph (80.47 km/h)52.55 mph (84.56 km/h)
55 mph (88.51 km/h)57.8 mph (93.02 km/h)
60 mph (96.56 km/h)63.06 mph (101.48 km/h)
65 mph (104.61 km/h)68.31 mph (109.93 km/h)
70 mph (112.65 km/h)73.56 mph (118.39 km/h)
75 mph (120.7 km/h)78.82 mph (126.85 km/h)
80 mph (128.75 km/h)84.07 mph (135.3 km/h)
85 mph (136.79 km/h)89.33 mph (143.76 km/h)
90 mph (144.84 km/h)94.58 mph (152.22 km/h)
95 mph (152.89 km/h)99.84 mph (160.67 km/h)
100 mph (160.93 km/h)105.09 mph (169.13 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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