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 265/75r16 Tire Comparison Side By Side
  33/10.5-15 265/75-16 Difference
Diameter inches (mm) 33.08 (840.24) 31.65 (803.9) -1.43 (-36.34) -4.3%
Width inches (mm) 10.51 (267) 10.43 (265) -0.08 (-2) -0.7%
Circum. inches (mm) 103.92 (2639.69) 99.43 (2525.53) -4.49 (-114.17) -4.3%
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) 637.23 (395.96) 27.56 (17.12) 4.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.14 mph (30.79 km/h)
25 mph (40.23 km/h)23.92 mph (38.49 km/h)
30 mph (48.28 km/h)28.7 mph (46.19 km/h)
35 mph (56.33 km/h)33.49 mph (53.89 km/h)
40 mph (64.37 km/h)38.27 mph (61.59 km/h)
45 mph (72.42 km/h)43.05 mph (69.29 km/h)
50 mph (80.47 km/h)47.84 mph (76.99 km/h)
55 mph (88.51 km/h)52.62 mph (84.69 km/h)
60 mph (96.56 km/h)57.41 mph (92.38 km/h)
65 mph (104.61 km/h)62.19 mph (100.08 km/h)
70 mph (112.65 km/h)66.97 mph (107.78 km/h)
75 mph (120.7 km/h)71.76 mph (115.48 km/h)
80 mph (128.75 km/h)76.54 mph (123.18 km/h)
85 mph (136.79 km/h)81.32 mph (130.88 km/h)
90 mph (144.84 km/h)86.11 mph (138.58 km/h)
95 mph (152.89 km/h)90.89 mph (146.28 km/h)
100 mph (160.93 km/h)95.68 mph (153.97 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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