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 275/90r16 Tire Comparison Side By Side
  245/35-16 275/90-16 Difference
Diameter inches (mm) 22.75 (577.9) 35.49 (901.4) 12.74 (323.5) 56%
Width inches (mm) 9.65 (245) 10.83 (275) 1.18 (30) 12.2%
Circum. inches (mm) 71.48 (1815.53) 111.49 (2831.83) 40.01 (1016.31) 56%
Sidewall Height inches (mm) 3.38 (85.75) 9.74 (247.5) 6.37 (161.75) 188.6%
Revolutions per mile (km) 886.43 (550.8) 568.3 (353.13) -318.13 (-197.68) -35.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)31.2 mph (50.2 km/h)
25 mph (40.23 km/h)38.99 mph (62.76 km/h)
30 mph (48.28 km/h)46.79 mph (75.31 km/h)
35 mph (56.33 km/h)54.59 mph (87.86 km/h)
40 mph (64.37 km/h)62.39 mph (100.41 km/h)
45 mph (72.42 km/h)70.19 mph (112.96 km/h)
50 mph (80.47 km/h)77.99 mph (125.51 km/h)
55 mph (88.51 km/h)85.79 mph (138.06 km/h)
60 mph (96.56 km/h)93.59 mph (150.61 km/h)
65 mph (104.61 km/h)101.39 mph (163.17 km/h)
70 mph (112.65 km/h)109.18 mph (175.72 km/h)
75 mph (120.7 km/h)116.98 mph (188.27 km/h)
80 mph (128.75 km/h)124.78 mph (200.82 km/h)
85 mph (136.79 km/h)132.58 mph (213.37 km/h)
90 mph (144.84 km/h)140.38 mph (225.92 km/h)
95 mph (152.89 km/h)148.18 mph (238.47 km/h)
100 mph (160.93 km/h)155.98 mph (251.02 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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