Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
25/10r12 vs 24/11r10 Tire Comparison Side By Side
  25/10-12 24/11-10 Difference
Diameter inches (mm) 25 (635) 24.06 (611.12) -0.94 (-23.88) -3.8%
Width inches (mm) 10 (254) 10.98 (279) 0.98 (25) 9.8%
Circum. inches (mm) 78.54 (1994.91) 75.59 (1919.89) -2.95 (-75.02) -3.8%
Sidewall Height inches (mm) 6.5 (165.1) 7.03 (178.56) 0.53 (13.46) 8.2%
Revolutions per mile (km) 806.72 (501.27) 838.25 (520.86) 31.52 (19.59) 3.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.25 mph (30.98 km/h)
25 mph (40.23 km/h)24.06 mph (38.72 km/h)
30 mph (48.28 km/h)28.87 mph (46.46 km/h)
35 mph (56.33 km/h)33.68 mph (54.21 km/h)
40 mph (64.37 km/h)38.5 mph (61.95 km/h)
45 mph (72.42 km/h)43.31 mph (69.7 km/h)
50 mph (80.47 km/h)48.12 mph (77.44 km/h)
55 mph (88.51 km/h)52.93 mph (85.19 km/h)
60 mph (96.56 km/h)57.74 mph (92.93 km/h)
65 mph (104.61 km/h)62.56 mph (100.67 km/h)
70 mph (112.65 km/h)67.37 mph (108.42 km/h)
75 mph (120.7 km/h)72.18 mph (116.16 km/h)
80 mph (128.75 km/h)76.99 mph (123.91 km/h)
85 mph (136.79 km/h)81.8 mph (131.65 km/h)
90 mph (144.84 km/h)86.62 mph (139.39 km/h)
95 mph (152.89 km/h)91.43 mph (147.14 km/h)
100 mph (160.93 km/h)96.24 mph (154.88 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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