Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/50r15 vs 295/60r15 Tire Comparison Side By Side
  295/50-15 295/60-15 Difference
Diameter inches (mm) 26.61 (676) 28.94 (735) 2.32 (59) 8.7%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 83.61 (2123.72) 90.91 (2309.07) 7.3 (185.35) 8.7%
Sidewall Height inches (mm) 5.81 (147.5) 6.97 (177) 1.16 (29.5) 20%
Revolutions per mile (km) 757.8 (470.87) 696.97 (433.07) -60.83 (-37.8) -8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.75 mph (35 km/h)
25 mph (40.23 km/h)27.18 mph (43.75 km/h)
30 mph (48.28 km/h)32.62 mph (52.49 km/h)
35 mph (56.33 km/h)38.05 mph (61.24 km/h)
40 mph (64.37 km/h)43.49 mph (69.99 km/h)
45 mph (72.42 km/h)48.93 mph (78.74 km/h)
50 mph (80.47 km/h)54.36 mph (87.49 km/h)
55 mph (88.51 km/h)59.8 mph (96.24 km/h)
60 mph (96.56 km/h)65.24 mph (104.99 km/h)
65 mph (104.61 km/h)70.67 mph (113.74 km/h)
70 mph (112.65 km/h)76.11 mph (122.49 km/h)
75 mph (120.7 km/h)81.55 mph (131.24 km/h)
80 mph (128.75 km/h)86.98 mph (139.98 km/h)
85 mph (136.79 km/h)92.42 mph (148.73 km/h)
90 mph (144.84 km/h)97.86 mph (157.48 km/h)
95 mph (152.89 km/h)103.29 mph (166.23 km/h)
100 mph (160.93 km/h)108.73 mph (174.98 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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