Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/50r14 vs 295/50r15 Tire Comparison Side By Side
  245/50-14 295/50-15 Difference
Diameter inches (mm) 23.65 (600.6) 26.61 (676) 2.97 (75.4) 12.6%
Width inches (mm) 9.65 (245) 11.61 (295) 1.97 (50) 20.4%
Circum. inches (mm) 74.29 (1886.84) 83.61 (2123.72) 9.33 (236.88) 12.6%
Sidewall Height inches (mm) 4.82 (122.5) 5.81 (147.5) 0.98 (25) 20.4%
Revolutions per mile (km) 852.93 (529.99) 757.8 (470.87) -95.13 (-59.11) -11.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.51 mph (36.23 km/h)
25 mph (40.23 km/h)28.14 mph (45.28 km/h)
30 mph (48.28 km/h)33.77 mph (54.34 km/h)
35 mph (56.33 km/h)39.39 mph (63.4 km/h)
40 mph (64.37 km/h)45.02 mph (72.46 km/h)
45 mph (72.42 km/h)50.65 mph (81.51 km/h)
50 mph (80.47 km/h)56.28 mph (90.57 km/h)
55 mph (88.51 km/h)61.9 mph (99.63 km/h)
60 mph (96.56 km/h)67.53 mph (108.68 km/h)
65 mph (104.61 km/h)73.16 mph (117.74 km/h)
70 mph (112.65 km/h)78.79 mph (126.8 km/h)
75 mph (120.7 km/h)84.42 mph (135.85 km/h)
80 mph (128.75 km/h)90.04 mph (144.91 km/h)
85 mph (136.79 km/h)95.67 mph (153.97 km/h)
90 mph (144.84 km/h)101.3 mph (163.02 km/h)
95 mph (152.89 km/h)106.93 mph (172.08 km/h)
100 mph (160.93 km/h)112.55 mph (181.14 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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