Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
33/10.5r15 vs 265/70r16 Tire Comparison Side By Side
  33/10.5-15 265/70-16 Difference
Diameter inches (mm) 33.08 (840.24) 30.61 (777.4) -2.47 (-62.84) -7.5%
Width inches (mm) 10.51 (267) 10.43 (265) -0.08 (-2) -0.7%
Circum. inches (mm) 103.92 (2639.69) 96.15 (2442.27) -7.77 (-197.42) -7.5%
Sidewall Height inches (mm) 9.04 (229.62) 7.3 (185.5) -1.74 (-44.12) -19.2%
Revolutions per mile (km) 609.67 (378.83) 658.95 (409.45) 49.28 (30.62) 8.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.5 mph (29.78 km/h)
25 mph (40.23 km/h)23.13 mph (37.22 km/h)
30 mph (48.28 km/h)27.76 mph (44.67 km/h)
35 mph (56.33 km/h)32.38 mph (52.11 km/h)
40 mph (64.37 km/h)37.01 mph (59.56 km/h)
45 mph (72.42 km/h)41.63 mph (67 km/h)
50 mph (80.47 km/h)46.26 mph (74.45 km/h)
55 mph (88.51 km/h)50.89 mph (81.89 km/h)
60 mph (96.56 km/h)55.51 mph (89.34 km/h)
65 mph (104.61 km/h)60.14 mph (96.78 km/h)
70 mph (112.65 km/h)64.76 mph (104.23 km/h)
75 mph (120.7 km/h)69.39 mph (111.67 km/h)
80 mph (128.75 km/h)74.02 mph (119.12 km/h)
85 mph (136.79 km/h)78.64 mph (126.56 km/h)
90 mph (144.84 km/h)83.27 mph (134.01 km/h)
95 mph (152.89 km/h)87.9 mph (141.45 km/h)
100 mph (160.93 km/h)92.52 mph (148.9 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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