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 296/35r20 Tire Comparison Side By Side
  295/25-26 296/35-20 Difference
Diameter inches (mm) 31.81 (807.9) 28.16 (715.2) -3.65 (-92.7) -11.5%
Width inches (mm) 11.61 (295) 11.65 (296) 0.04 (1) 0.3%
Circum. inches (mm) 99.92 (2538.09) 88.46 (2246.87) -11.47 (-291.23) -11.5%
Sidewall Height inches (mm) 2.9 (73.75) 4.08 (103.6) 1.18 (29.85) 40.5%
Revolutions per mile (km) 634.08 (394) 716.26 (445.06) 82.19 (51.07) 13%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.71 mph (28.49 km/h)
25 mph (40.23 km/h)22.13 mph (35.62 km/h)
30 mph (48.28 km/h)26.56 mph (42.74 km/h)
35 mph (56.33 km/h)30.98 mph (49.86 km/h)
40 mph (64.37 km/h)35.41 mph (56.99 km/h)
45 mph (72.42 km/h)39.84 mph (64.11 km/h)
50 mph (80.47 km/h)44.26 mph (71.23 km/h)
55 mph (88.51 km/h)48.69 mph (78.36 km/h)
60 mph (96.56 km/h)53.12 mph (85.48 km/h)
65 mph (104.61 km/h)57.54 mph (92.6 km/h)
70 mph (112.65 km/h)61.97 mph (99.73 km/h)
75 mph (120.7 km/h)66.39 mph (106.85 km/h)
80 mph (128.75 km/h)70.82 mph (113.98 km/h)
85 mph (136.79 km/h)75.25 mph (121.1 km/h)
90 mph (144.84 km/h)79.67 mph (128.22 km/h)
95 mph (152.89 km/h)84.1 mph (135.35 km/h)
100 mph (160.93 km/h)88.53 mph (142.47 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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