Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r28 vs 315/40r26 Tire Comparison Side By Side
  295/25-28 315/40-26 Difference
Diameter inches (mm) 33.81 (858.7) 35.92 (912.4) 2.11 (53.7) 6.3%
Width inches (mm) 11.61 (295) 12.4 (315) 0.79 (20) 6.8%
Circum. inches (mm) 106.21 (2697.69) 112.85 (2866.39) 6.64 (168.7) 6.3%
Sidewall Height inches (mm) 2.9 (73.75) 4.96 (126) 2.06 (52.25) 70.8%
Revolutions per mile (km) 596.56 (370.69) 561.45 (348.87) -35.11 (-21.82) -5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.25 mph (34.2 km/h)
25 mph (40.23 km/h)26.56 mph (42.75 km/h)
30 mph (48.28 km/h)31.88 mph (51.3 km/h)
35 mph (56.33 km/h)37.19 mph (59.85 km/h)
40 mph (64.37 km/h)42.5 mph (68.4 km/h)
45 mph (72.42 km/h)47.81 mph (76.95 km/h)
50 mph (80.47 km/h)53.13 mph (85.5 km/h)
55 mph (88.51 km/h)58.44 mph (94.05 km/h)
60 mph (96.56 km/h)63.75 mph (102.6 km/h)
65 mph (104.61 km/h)69.06 mph (111.15 km/h)
70 mph (112.65 km/h)74.38 mph (119.7 km/h)
75 mph (120.7 km/h)79.69 mph (128.25 km/h)
80 mph (128.75 km/h)85 mph (136.8 km/h)
85 mph (136.79 km/h)90.32 mph (145.35 km/h)
90 mph (144.84 km/h)95.63 mph (153.9 km/h)
95 mph (152.89 km/h)100.94 mph (162.45 km/h)
100 mph (160.93 km/h)106.25 mph (171 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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