Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/35r16 vs 265/90r16 Tire Comparison Side By Side
  245/35-16 265/90-16 Difference
Diameter inches (mm) 22.75 (577.9) 34.78 (883.4) 12.03 (305.5) 52.9%
Width inches (mm) 9.65 (245) 10.43 (265) 0.79 (20) 8.2%
Circum. inches (mm) 71.48 (1815.53) 109.26 (2775.28) 37.79 (959.76) 52.9%
Sidewall Height inches (mm) 3.38 (85.75) 9.39 (238.5) 6.01 (152.75) 178.1%
Revolutions per mile (km) 886.43 (550.8) 579.88 (360.32) -306.55 (-190.48) -34.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)30.57 mph (49.2 km/h)
25 mph (40.23 km/h)38.22 mph (61.5 km/h)
30 mph (48.28 km/h)45.86 mph (73.8 km/h)
35 mph (56.33 km/h)53.5 mph (86.1 km/h)
40 mph (64.37 km/h)61.15 mph (98.4 km/h)
45 mph (72.42 km/h)68.79 mph (110.7 km/h)
50 mph (80.47 km/h)76.43 mph (123.01 km/h)
55 mph (88.51 km/h)84.08 mph (135.31 km/h)
60 mph (96.56 km/h)91.72 mph (147.61 km/h)
65 mph (104.61 km/h)99.36 mph (159.91 km/h)
70 mph (112.65 km/h)107 mph (172.21 km/h)
75 mph (120.7 km/h)114.65 mph (184.51 km/h)
80 mph (128.75 km/h)122.29 mph (196.81 km/h)
85 mph (136.79 km/h)129.93 mph (209.11 km/h)
90 mph (144.84 km/h)137.58 mph (221.41 km/h)
95 mph (152.89 km/h)145.22 mph (233.71 km/h)
100 mph (160.93 km/h)152.86 mph (246.01 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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