Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
315/30r22 vs 35/13.5r22 Tire Comparison Side By Side
  315/30-22 35/13.5-22 Difference
Diameter inches (mm) 29.44 (747.8) 34.96 (888.08) 5.52 (140.28) 18.8%
Width inches (mm) 12.4 (315) 13.5 (343) 1.1 (28) 8.9%
Circum. inches (mm) 92.49 (2349.28) 109.84 (2789.99) 17.35 (440.7) 18.8%
Sidewall Height inches (mm) 3.72 (94.5) 6.48 (164.64) 2.76 (70.14) 74.2%
Revolutions per mile (km) 685.04 (425.66) 576.83 (358.42) -108.21 (-67.24) -15.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.75 mph (38.22 km/h)
25 mph (40.23 km/h)29.69 mph (47.78 km/h)
30 mph (48.28 km/h)35.63 mph (57.34 km/h)
35 mph (56.33 km/h)41.57 mph (66.89 km/h)
40 mph (64.37 km/h)47.5 mph (76.45 km/h)
45 mph (72.42 km/h)53.44 mph (86.01 km/h)
50 mph (80.47 km/h)59.38 mph (95.56 km/h)
55 mph (88.51 km/h)65.32 mph (105.12 km/h)
60 mph (96.56 km/h)71.26 mph (114.67 km/h)
65 mph (104.61 km/h)77.19 mph (124.23 km/h)
70 mph (112.65 km/h)83.13 mph (133.79 km/h)
75 mph (120.7 km/h)89.07 mph (143.34 km/h)
80 mph (128.75 km/h)95.01 mph (152.9 km/h)
85 mph (136.79 km/h)100.95 mph (162.46 km/h)
90 mph (144.84 km/h)106.88 mph (172.01 km/h)
95 mph (152.89 km/h)112.82 mph (181.57 km/h)
100 mph (160.93 km/h)118.76 mph (191.12 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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