Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
196/65r15 vs 295/50r15 Tire Comparison Side By Side
  196/65-15 295/50-15 Difference
Diameter inches (mm) 25.03 (635.8) 26.61 (676) 1.58 (40.2) 6.3%
Width inches (mm) 7.72 (196) 11.61 (295) 3.9 (99) 50.5%
Circum. inches (mm) 78.64 (1997.42) 83.61 (2123.72) 4.97 (126.29) 6.3%
Sidewall Height inches (mm) 5.02 (127.4) 5.81 (147.5) 0.79 (20.1) 15.8%
Revolutions per mile (km) 805.71 (500.64) 757.8 (470.87) -47.91 (-29.77) -5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.26 mph (34.22 km/h)
25 mph (40.23 km/h)26.58 mph (42.78 km/h)
30 mph (48.28 km/h)31.9 mph (51.33 km/h)
35 mph (56.33 km/h)37.21 mph (59.89 km/h)
40 mph (64.37 km/h)42.53 mph (68.44 km/h)
45 mph (72.42 km/h)47.85 mph (77 km/h)
50 mph (80.47 km/h)53.16 mph (85.56 km/h)
55 mph (88.51 km/h)58.48 mph (94.11 km/h)
60 mph (96.56 km/h)63.79 mph (102.67 km/h)
65 mph (104.61 km/h)69.11 mph (111.22 km/h)
70 mph (112.65 km/h)74.43 mph (119.78 km/h)
75 mph (120.7 km/h)79.74 mph (128.33 km/h)
80 mph (128.75 km/h)85.06 mph (136.89 km/h)
85 mph (136.79 km/h)90.37 mph (145.44 km/h)
90 mph (144.84 km/h)95.69 mph (154 km/h)
95 mph (152.89 km/h)101.01 mph (162.55 km/h)
100 mph (160.93 km/h)106.32 mph (171.11 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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