Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
35/12.5r16 vs 265/75r16 Tire Comparison Side By Side
  35/12.5-16 265/75-16 Difference
Diameter inches (mm) 35.03 (889.76) 31.65 (803.9) -3.38 (-85.86) -9.6%
Width inches (mm) 12.52 (318) 10.43 (265) -2.09 (-53) -16.7%
Circum. inches (mm) 110.05 (2795.26) 99.43 (2525.53) -10.62 (-269.74) -9.6%
Sidewall Height inches (mm) 9.51 (241.68) 7.82 (198.75) -1.69 (-42.93) -17.8%
Revolutions per mile (km) 575.74 (357.75) 637.23 (395.96) 61.49 (38.21) 10.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.07 mph (29.08 km/h)
25 mph (40.23 km/h)22.59 mph (36.35 km/h)
30 mph (48.28 km/h)27.11 mph (43.62 km/h)
35 mph (56.33 km/h)31.62 mph (50.89 km/h)
40 mph (64.37 km/h)36.14 mph (58.16 km/h)
45 mph (72.42 km/h)40.66 mph (65.43 km/h)
50 mph (80.47 km/h)45.18 mph (72.7 km/h)
55 mph (88.51 km/h)49.69 mph (79.97 km/h)
60 mph (96.56 km/h)54.21 mph (87.24 km/h)
65 mph (104.61 km/h)58.73 mph (94.51 km/h)
70 mph (112.65 km/h)63.25 mph (101.78 km/h)
75 mph (120.7 km/h)67.76 mph (109.05 km/h)
80 mph (128.75 km/h)72.28 mph (116.32 km/h)
85 mph (136.79 km/h)76.8 mph (123.59 km/h)
90 mph (144.84 km/h)81.32 mph (130.86 km/h)
95 mph (152.89 km/h)85.83 mph (138.13 km/h)
100 mph (160.93 km/h)90.35 mph (145.4 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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