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 265/75r15 Tire Comparison Side By Side
  33/10.5-15 265/75-15 Difference
Diameter inches (mm) 33.08 (840.24) 30.65 (778.5) -2.43 (-61.74) -7.3%
Width inches (mm) 10.51 (267) 10.43 (265) -0.08 (-2) -0.7%
Circum. inches (mm) 103.92 (2639.69) 96.29 (2445.73) -7.64 (-193.96) -7.3%
Sidewall Height inches (mm) 9.04 (229.62) 7.82 (198.75) -1.22 (-30.87) -13.4%
Revolutions per mile (km) 609.67 (378.83) 658.02 (408.88) 48.35 (30.04) 7.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.53 mph (29.82 km/h)
25 mph (40.23 km/h)23.16 mph (37.28 km/h)
30 mph (48.28 km/h)27.8 mph (44.73 km/h)
35 mph (56.33 km/h)32.43 mph (52.19 km/h)
40 mph (64.37 km/h)37.06 mph (59.64 km/h)
45 mph (72.42 km/h)41.69 mph (67.1 km/h)
50 mph (80.47 km/h)46.33 mph (74.55 km/h)
55 mph (88.51 km/h)50.96 mph (82.01 km/h)
60 mph (96.56 km/h)55.59 mph (89.47 km/h)
65 mph (104.61 km/h)60.22 mph (96.92 km/h)
70 mph (112.65 km/h)64.86 mph (104.38 km/h)
75 mph (120.7 km/h)69.49 mph (111.83 km/h)
80 mph (128.75 km/h)74.12 mph (119.29 km/h)
85 mph (136.79 km/h)78.75 mph (126.74 km/h)
90 mph (144.84 km/h)83.39 mph (134.2 km/h)
95 mph (152.89 km/h)88.02 mph (141.65 km/h)
100 mph (160.93 km/h)92.65 mph (149.11 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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