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 245/90r16 Tire Comparison Side By Side
  245/35-16 245/90-16 Difference
Diameter inches (mm) 22.75 (577.9) 33.36 (847.4) 10.61 (269.5) 46.6%
Width inches (mm) 9.65 (245) 9.65 (245) 0 (0) 0%
Circum. inches (mm) 71.48 (1815.53) 104.81 (2662.19) 33.33 (846.66) 46.6%
Sidewall Height inches (mm) 3.38 (85.75) 8.68 (220.5) 5.31 (134.75) 157.1%
Revolutions per mile (km) 886.43 (550.8) 604.52 (375.63) -281.91 (-175.17) -31.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)29.33 mph (47.2 km/h)
25 mph (40.23 km/h)36.66 mph (59 km/h)
30 mph (48.28 km/h)43.99 mph (70.8 km/h)
35 mph (56.33 km/h)51.32 mph (82.59 km/h)
40 mph (64.37 km/h)58.65 mph (94.39 km/h)
45 mph (72.42 km/h)65.99 mph (106.19 km/h)
50 mph (80.47 km/h)73.32 mph (117.99 km/h)
55 mph (88.51 km/h)80.65 mph (129.79 km/h)
60 mph (96.56 km/h)87.98 mph (141.59 km/h)
65 mph (104.61 km/h)95.31 mph (153.39 km/h)
70 mph (112.65 km/h)102.64 mph (165.19 km/h)
75 mph (120.7 km/h)109.98 mph (176.99 km/h)
80 mph (128.75 km/h)117.31 mph (188.79 km/h)
85 mph (136.79 km/h)124.64 mph (200.59 km/h)
90 mph (144.84 km/h)131.97 mph (212.39 km/h)
95 mph (152.89 km/h)139.3 mph (224.19 km/h)
100 mph (160.93 km/h)146.63 mph (235.99 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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