Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r26 vs 295/30r26 Tire Comparison Side By Side
  295/25-26 295/30-26 Difference
Diameter inches (mm) 31.81 (807.9) 32.97 (837.4) 1.16 (29.5) 3.7%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 99.92 (2538.09) 103.57 (2630.77) 3.65 (92.68) 3.7%
Sidewall Height inches (mm) 2.9 (73.75) 3.48 (88.5) 0.58 (14.75) 20%
Revolutions per mile (km) 634.08 (394) 611.74 (380.12) -22.34 (-13.88) -3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.73 mph (33.36 km/h)
25 mph (40.23 km/h)25.91 mph (41.7 km/h)
30 mph (48.28 km/h)31.1 mph (50.04 km/h)
35 mph (56.33 km/h)36.28 mph (58.38 km/h)
40 mph (64.37 km/h)41.46 mph (66.72 km/h)
45 mph (72.42 km/h)46.64 mph (75.07 km/h)
50 mph (80.47 km/h)51.83 mph (83.41 km/h)
55 mph (88.51 km/h)57.01 mph (91.75 km/h)
60 mph (96.56 km/h)62.19 mph (100.09 km/h)
65 mph (104.61 km/h)67.37 mph (108.43 km/h)
70 mph (112.65 km/h)72.56 mph (116.77 km/h)
75 mph (120.7 km/h)77.74 mph (125.11 km/h)
80 mph (128.75 km/h)82.92 mph (133.45 km/h)
85 mph (136.79 km/h)88.1 mph (141.79 km/h)
90 mph (144.84 km/h)93.29 mph (150.13 km/h)
95 mph (152.89 km/h)98.47 mph (158.47 km/h)
100 mph (160.93 km/h)103.65 mph (166.81 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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