Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/40r10 vs 265/35r19 Tire Comparison Side By Side
  225/40-10 265/35-19 Difference
Diameter inches (mm) 17.09 (434) 26.3 (668.1) 9.22 (234.1) 53.9%
Width inches (mm) 8.86 (225) 10.43 (265) 1.57 (40) 17.8%
Circum. inches (mm) 53.68 (1363.45) 82.63 (2098.9) 28.95 (735.45) 53.9%
Sidewall Height inches (mm) 3.54 (90) 3.65 (92.75) 0.11 (2.75) 3.1%
Revolutions per mile (km) 1180.35 (733.43) 766.76 (476.44) -413.59 (-256.99) -35%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)30.79 mph (49.55 km/h)
25 mph (40.23 km/h)38.49 mph (61.94 km/h)
30 mph (48.28 km/h)46.18 mph (74.32 km/h)
35 mph (56.33 km/h)53.88 mph (86.71 km/h)
40 mph (64.37 km/h)61.58 mph (99.1 km/h)
45 mph (72.42 km/h)69.27 mph (111.48 km/h)
50 mph (80.47 km/h)76.97 mph (123.87 km/h)
55 mph (88.51 km/h)84.67 mph (136.26 km/h)
60 mph (96.56 km/h)92.36 mph (148.65 km/h)
65 mph (104.61 km/h)100.06 mph (161.03 km/h)
70 mph (112.65 km/h)107.76 mph (173.42 km/h)
75 mph (120.7 km/h)115.46 mph (185.81 km/h)
80 mph (128.75 km/h)123.15 mph (198.19 km/h)
85 mph (136.79 km/h)130.85 mph (210.58 km/h)
90 mph (144.84 km/h)138.55 mph (222.97 km/h)
95 mph (152.89 km/h)146.24 mph (235.36 km/h)
100 mph (160.93 km/h)153.94 mph (247.74 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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