Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/60r16 vs 265/70r16 Tire Comparison Side By Side
  255/60-16 265/70-16 Difference
Diameter inches (mm) 28.05 (712.4) 30.61 (777.4) 2.56 (65) 9.1%
Width inches (mm) 10.04 (255) 10.43 (265) 0.39 (10) 3.9%
Circum. inches (mm) 88.11 (2238.07) 96.15 (2442.27) 8.04 (204.2) 9.1%
Sidewall Height inches (mm) 6.02 (153) 7.3 (185.5) 1.28 (32.5) 21.2%
Revolutions per mile (km) 719.08 (446.81) 658.95 (409.45) -60.12 (-37.36) -8.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.82 mph (35.12 km/h)
25 mph (40.23 km/h)27.28 mph (43.9 km/h)
30 mph (48.28 km/h)32.74 mph (52.69 km/h)
35 mph (56.33 km/h)38.19 mph (61.47 km/h)
40 mph (64.37 km/h)43.65 mph (70.25 km/h)
45 mph (72.42 km/h)49.11 mph (79.03 km/h)
50 mph (80.47 km/h)54.56 mph (87.81 km/h)
55 mph (88.51 km/h)60.02 mph (96.59 km/h)
60 mph (96.56 km/h)65.47 mph (105.37 km/h)
65 mph (104.61 km/h)70.93 mph (114.15 km/h)
70 mph (112.65 km/h)76.39 mph (122.93 km/h)
75 mph (120.7 km/h)81.84 mph (131.71 km/h)
80 mph (128.75 km/h)87.3 mph (140.49 km/h)
85 mph (136.79 km/h)92.76 mph (149.28 km/h)
90 mph (144.84 km/h)98.21 mph (158.06 km/h)
95 mph (152.89 km/h)103.67 mph (166.84 km/h)
100 mph (160.93 km/h)109.12 mph (175.62 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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