Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/75r16.5 vs 35/10.5r16.5 Tire Comparison Side By Side
  245/75-16.5 35/10.5-16.5 Difference
Diameter inches (mm) 30.97 (786.6) 35 (889.02) 4.03 (102.42) 13%
Width inches (mm) 9.65 (245) 10.51 (267) 0.87 (22) 9%
Circum. inches (mm) 97.29 (2471.18) 109.96 (2792.94) 12.67 (321.76) 13%
Sidewall Height inches (mm) 7.23 (183.75) 9.25 (234.96) 2.02 (51.21) 27.9%
Revolutions per mile (km) 651.25 (404.66) 576.22 (358.05) -75.03 (-46.62) -11.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.6 mph (36.38 km/h)
25 mph (40.23 km/h)28.26 mph (45.47 km/h)
30 mph (48.28 km/h)33.91 mph (54.57 km/h)
35 mph (56.33 km/h)39.56 mph (63.66 km/h)
40 mph (64.37 km/h)45.21 mph (72.76 km/h)
45 mph (72.42 km/h)50.86 mph (81.85 km/h)
50 mph (80.47 km/h)56.51 mph (90.94 km/h)
55 mph (88.51 km/h)62.16 mph (100.04 km/h)
60 mph (96.56 km/h)67.81 mph (109.13 km/h)
65 mph (104.61 km/h)73.46 mph (118.23 km/h)
70 mph (112.65 km/h)79.11 mph (127.32 km/h)
75 mph (120.7 km/h)84.77 mph (136.42 km/h)
80 mph (128.75 km/h)90.42 mph (145.51 km/h)
85 mph (136.79 km/h)96.07 mph (154.61 km/h)
90 mph (144.84 km/h)101.72 mph (163.7 km/h)
95 mph (152.89 km/h)107.37 mph (172.79 km/h)
100 mph (160.93 km/h)113.02 mph (181.89 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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