Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r19 vs 305/35r19 Tire Comparison Side By Side
  295/45-19 305/35-19 Difference
Diameter inches (mm) 29.45 (748.1) 27.41 (696.1) -2.05 (-52) -7%
Width inches (mm) 11.61 (295) 12.01 (305) 0.39 (10) 3.4%
Circum. inches (mm) 92.53 (2350.23) 86.1 (2186.86) -6.43 (-163.36) -7%
Sidewall Height inches (mm) 5.23 (132.75) 4.2 (106.75) -1.02 (-26) -19.6%
Revolutions per mile (km) 684.76 (425.49) 735.91 (457.28) 51.15 (31.78) 7.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.61 mph (29.95 km/h)
25 mph (40.23 km/h)23.26 mph (37.44 km/h)
30 mph (48.28 km/h)27.91 mph (44.92 km/h)
35 mph (56.33 km/h)32.57 mph (52.41 km/h)
40 mph (64.37 km/h)37.22 mph (59.9 km/h)
45 mph (72.42 km/h)41.87 mph (67.39 km/h)
50 mph (80.47 km/h)46.52 mph (74.87 km/h)
55 mph (88.51 km/h)51.18 mph (82.36 km/h)
60 mph (96.56 km/h)55.83 mph (89.85 km/h)
65 mph (104.61 km/h)60.48 mph (97.34 km/h)
70 mph (112.65 km/h)65.13 mph (104.82 km/h)
75 mph (120.7 km/h)69.79 mph (112.31 km/h)
80 mph (128.75 km/h)74.44 mph (119.8 km/h)
85 mph (136.79 km/h)79.09 mph (127.29 km/h)
90 mph (144.84 km/h)83.74 mph (134.77 km/h)
95 mph (152.89 km/h)88.4 mph (142.26 km/h)
100 mph (160.93 km/h)93.05 mph (149.75 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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