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 275/35r19 Tire Comparison Side By Side
  245/35-16 275/35-19 Difference
Diameter inches (mm) 22.75 (577.9) 26.58 (675.1) 3.83 (97.2) 16.8%
Width inches (mm) 9.65 (245) 10.83 (275) 1.18 (30) 12.2%
Circum. inches (mm) 71.48 (1815.53) 83.5 (2120.89) 12.02 (305.36) 16.8%
Sidewall Height inches (mm) 3.38 (85.75) 3.79 (96.25) 0.41 (10.5) 12.2%
Revolutions per mile (km) 886.43 (550.8) 758.81 (471.5) -127.63 (-79.3) -14.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.36 mph (37.6 km/h)
25 mph (40.23 km/h)29.2 mph (47 km/h)
30 mph (48.28 km/h)35.05 mph (56.4 km/h)
35 mph (56.33 km/h)40.89 mph (65.8 km/h)
40 mph (64.37 km/h)46.73 mph (75.2 km/h)
45 mph (72.42 km/h)52.57 mph (84.6 km/h)
50 mph (80.47 km/h)58.41 mph (94 km/h)
55 mph (88.51 km/h)64.25 mph (103.4 km/h)
60 mph (96.56 km/h)70.09 mph (112.8 km/h)
65 mph (104.61 km/h)75.93 mph (122.2 km/h)
70 mph (112.65 km/h)81.77 mph (131.6 km/h)
75 mph (120.7 km/h)87.61 mph (141 km/h)
80 mph (128.75 km/h)93.46 mph (150.4 km/h)
85 mph (136.79 km/h)99.3 mph (159.8 km/h)
90 mph (144.84 km/h)105.14 mph (169.2 km/h)
95 mph (152.89 km/h)110.98 mph (178.6 km/h)
100 mph (160.93 km/h)116.82 mph (188 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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