Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
32/10.5r16 vs 265/70r16 Tire Comparison Side By Side
  32/10.5-16 265/70-16 Difference
Diameter inches (mm) 31.98 (812.24) 30.61 (777.4) -1.37 (-34.84) -4.3%
Width inches (mm) 10.51 (267) 10.43 (265) -0.08 (-2) -0.7%
Circum. inches (mm) 100.46 (2551.73) 96.15 (2442.27) -4.31 (-109.45) -4.3%
Sidewall Height inches (mm) 7.99 (202.92) 7.3 (185.5) -0.69 (-17.42) -8.6%
Revolutions per mile (km) 630.69 (391.89) 658.95 (409.45) 28.26 (17.56) 4.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.14 mph (30.81 km/h)
25 mph (40.23 km/h)23.93 mph (38.51 km/h)
30 mph (48.28 km/h)28.71 mph (46.21 km/h)
35 mph (56.33 km/h)33.5 mph (53.91 km/h)
40 mph (64.37 km/h)38.28 mph (61.61 km/h)
45 mph (72.42 km/h)43.07 mph (69.31 km/h)
50 mph (80.47 km/h)47.86 mph (77.02 km/h)
55 mph (88.51 km/h)52.64 mph (84.72 km/h)
60 mph (96.56 km/h)57.43 mph (92.42 km/h)
65 mph (104.61 km/h)62.21 mph (100.12 km/h)
70 mph (112.65 km/h)67 mph (107.82 km/h)
75 mph (120.7 km/h)71.78 mph (115.52 km/h)
80 mph (128.75 km/h)76.57 mph (123.23 km/h)
85 mph (136.79 km/h)81.35 mph (130.93 km/h)
90 mph (144.84 km/h)86.14 mph (138.63 km/h)
95 mph (152.89 km/h)90.93 mph (146.33 km/h)
100 mph (160.93 km/h)95.71 mph (154.03 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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