Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/75r17 vs 35/10.5r17 Tire Comparison Side By Side
  215/75-17 35/10.5-17 Difference
Diameter inches (mm) 29.7 (754.3) 35.08 (891.04) 5.38 (136.74) 18.1%
Width inches (mm) 8.46 (215) 10.51 (267) 2.05 (52) 24.2%
Circum. inches (mm) 93.3 (2369.7) 110.21 (2799.28) 16.91 (429.58) 18.1%
Sidewall Height inches (mm) 6.35 (161.25) 9.04 (229.62) 2.69 (68.37) 42.4%
Revolutions per mile (km) 679.13 (421.99) 574.91 (357.23) -104.22 (-64.76) -15.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.63 mph (38.02 km/h)
25 mph (40.23 km/h)29.53 mph (47.53 km/h)
30 mph (48.28 km/h)35.44 mph (57.03 km/h)
35 mph (56.33 km/h)41.34 mph (66.54 km/h)
40 mph (64.37 km/h)47.25 mph (76.04 km/h)
45 mph (72.42 km/h)53.16 mph (85.55 km/h)
50 mph (80.47 km/h)59.06 mph (95.05 km/h)
55 mph (88.51 km/h)64.97 mph (104.56 km/h)
60 mph (96.56 km/h)70.88 mph (114.07 km/h)
65 mph (104.61 km/h)76.78 mph (123.57 km/h)
70 mph (112.65 km/h)82.69 mph (133.08 km/h)
75 mph (120.7 km/h)88.6 mph (142.58 km/h)
80 mph (128.75 km/h)94.5 mph (152.09 km/h)
85 mph (136.79 km/h)100.41 mph (161.59 km/h)
90 mph (144.84 km/h)106.32 mph (171.1 km/h)
95 mph (152.89 km/h)112.22 mph (180.6 km/h)
100 mph (160.93 km/h)118.13 mph (190.11 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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