Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
315/25r23 vs 315/25r22 Tire Comparison Side By Side
  315/25-23 315/25-22 Difference
Diameter inches (mm) 29.2 (741.7) 28.2 (716.3) -1 (-25.4) -3.4%
Width inches (mm) 12.4 (315) 12.4 (315) 0 (0) 0%
Circum. inches (mm) 91.74 (2330.12) 88.6 (2250.32) -3.14 (-79.8) -3.4%
Sidewall Height inches (mm) 3.1 (78.75) 3.1 (78.75) 0 (0) 0%
Revolutions per mile (km) 690.67 (429.16) 715.16 (444.38) 24.49 (15.22) 3.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.32 mph (31.08 km/h)
25 mph (40.23 km/h)24.14 mph (38.86 km/h)
30 mph (48.28 km/h)28.97 mph (46.63 km/h)
35 mph (56.33 km/h)33.8 mph (54.4 km/h)
40 mph (64.37 km/h)38.63 mph (62.17 km/h)
45 mph (72.42 km/h)43.46 mph (69.94 km/h)
50 mph (80.47 km/h)48.29 mph (77.71 km/h)
55 mph (88.51 km/h)53.12 mph (85.48 km/h)
60 mph (96.56 km/h)57.95 mph (93.25 km/h)
65 mph (104.61 km/h)62.77 mph (101.03 km/h)
70 mph (112.65 km/h)67.6 mph (108.8 km/h)
75 mph (120.7 km/h)72.43 mph (116.57 km/h)
80 mph (128.75 km/h)77.26 mph (124.34 km/h)
85 mph (136.79 km/h)82.09 mph (132.11 km/h)
90 mph (144.84 km/h)86.92 mph (139.88 km/h)
95 mph (152.89 km/h)91.75 mph (147.65 km/h)
100 mph (160.93 km/h)96.58 mph (155.42 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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