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 235/60r16 Tire Comparison Side By Side
  265/70-16 235/60-16 Difference
Diameter inches (mm) 30.61 (777.4) 27.1 (688.4) -3.5 (-89) -11.4%
Width inches (mm) 10.43 (265) 9.25 (235) -1.18 (-30) -11.3%
Circum. inches (mm) 96.15 (2442.27) 85.14 (2162.67) -11.01 (-279.6) -11.4%
Sidewall Height inches (mm) 7.3 (185.5) 5.55 (141) -1.75 (-44.5) -24%
Revolutions per mile (km) 658.95 (409.45) 744.15 (462.39) 85.19 (52.94) 12.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.71 mph (28.5 km/h)
25 mph (40.23 km/h)22.14 mph (35.63 km/h)
30 mph (48.28 km/h)26.57 mph (42.75 km/h)
35 mph (56.33 km/h)30.99 mph (49.88 km/h)
40 mph (64.37 km/h)35.42 mph (57 km/h)
45 mph (72.42 km/h)39.85 mph (64.13 km/h)
50 mph (80.47 km/h)44.28 mph (71.26 km/h)
55 mph (88.51 km/h)48.7 mph (78.38 km/h)
60 mph (96.56 km/h)53.13 mph (85.51 km/h)
65 mph (104.61 km/h)57.56 mph (92.63 km/h)
70 mph (112.65 km/h)61.99 mph (99.76 km/h)
75 mph (120.7 km/h)66.41 mph (106.88 km/h)
80 mph (128.75 km/h)70.84 mph (114.01 km/h)
85 mph (136.79 km/h)75.27 mph (121.13 km/h)
90 mph (144.84 km/h)79.7 mph (128.26 km/h)
95 mph (152.89 km/h)84.12 mph (135.38 km/h)
100 mph (160.93 km/h)88.55 mph (142.51 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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