Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r19 vs 345/25r19 Tire Comparison Side By Side
  295/25-19 345/25-19 Difference
Diameter inches (mm) 24.81 (630.1) 25.79 (655.1) 0.98 (25) 4%
Width inches (mm) 11.61 (295) 13.58 (345) 1.97 (50) 16.9%
Circum. inches (mm) 77.93 (1979.52) 81.03 (2058.06) 3.09 (78.54) 4%
Sidewall Height inches (mm) 2.9 (73.75) 3.4 (86.25) 0.49 (12.5) 16.9%
Revolutions per mile (km) 813 (505.17) 781.97 (485.89) -31.03 (-19.28) -3.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.79 mph (33.46 km/h)
25 mph (40.23 km/h)25.99 mph (41.83 km/h)
30 mph (48.28 km/h)31.19 mph (50.2 km/h)
35 mph (56.33 km/h)36.39 mph (58.56 km/h)
40 mph (64.37 km/h)41.59 mph (66.93 km/h)
45 mph (72.42 km/h)46.79 mph (75.29 km/h)
50 mph (80.47 km/h)51.98 mph (83.66 km/h)
55 mph (88.51 km/h)57.18 mph (92.03 km/h)
60 mph (96.56 km/h)62.38 mph (100.39 km/h)
65 mph (104.61 km/h)67.58 mph (108.76 km/h)
70 mph (112.65 km/h)72.78 mph (117.12 km/h)
75 mph (120.7 km/h)77.98 mph (125.49 km/h)
80 mph (128.75 km/h)83.17 mph (133.86 km/h)
85 mph (136.79 km/h)88.37 mph (142.22 km/h)
90 mph (144.84 km/h)93.57 mph (150.59 km/h)
95 mph (152.89 km/h)98.77 mph (158.95 km/h)
100 mph (160.93 km/h)103.97 mph (167.32 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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