Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/35r19 vs 285/35r19 Tire Comparison Side By Side
  265/35-19 285/35-19 Difference
Diameter inches (mm) 26.3 (668.1) 26.85 (682.1) 0.55 (14) 2.1%
Width inches (mm) 10.43 (265) 11.22 (285) 0.79 (20) 7.5%
Circum. inches (mm) 82.63 (2098.9) 84.37 (2142.88) 1.73 (43.98) 2.1%
Sidewall Height inches (mm) 3.65 (92.75) 3.93 (99.75) 0.28 (7) 7.5%
Revolutions per mile (km) 766.76 (476.44) 751.02 (466.66) -15.74 (-9.78) -2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.42 mph (32.86 km/h)
25 mph (40.23 km/h)25.52 mph (41.08 km/h)
30 mph (48.28 km/h)30.63 mph (49.29 km/h)
35 mph (56.33 km/h)35.73 mph (57.51 km/h)
40 mph (64.37 km/h)40.84 mph (65.72 km/h)
45 mph (72.42 km/h)45.94 mph (73.94 km/h)
50 mph (80.47 km/h)51.05 mph (82.15 km/h)
55 mph (88.51 km/h)56.15 mph (90.37 km/h)
60 mph (96.56 km/h)61.26 mph (98.58 km/h)
65 mph (104.61 km/h)66.36 mph (106.8 km/h)
70 mph (112.65 km/h)71.47 mph (115.01 km/h)
75 mph (120.7 km/h)76.57 mph (123.23 km/h)
80 mph (128.75 km/h)81.68 mph (131.45 km/h)
85 mph (136.79 km/h)86.78 mph (139.66 km/h)
90 mph (144.84 km/h)91.89 mph (147.88 km/h)
95 mph (152.89 km/h)96.99 mph (156.09 km/h)
100 mph (160.93 km/h)102.1 mph (164.31 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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