Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/35r16 vs 275/100r16 Tire Comparison Side By Side
  245/35-16 275/100-16 Difference
Diameter inches (mm) 22.75 (577.9) 37.65 (956.4) 14.9 (378.5) 65.5%
Width inches (mm) 9.65 (245) 10.83 (275) 1.18 (30) 12.2%
Circum. inches (mm) 71.48 (1815.53) 118.29 (3004.62) 46.81 (1189.09) 65.5%
Sidewall Height inches (mm) 3.38 (85.75) 10.83 (275) 7.45 (189.25) 220.7%
Revolutions per mile (km) 886.43 (550.8) 535.62 (332.82) -350.81 (-217.98) -39.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)33.1 mph (53.27 km/h)
25 mph (40.23 km/h)41.37 mph (66.59 km/h)
30 mph (48.28 km/h)49.65 mph (79.9 km/h)
35 mph (56.33 km/h)57.92 mph (93.22 km/h)
40 mph (64.37 km/h)66.2 mph (106.54 km/h)
45 mph (72.42 km/h)74.47 mph (119.85 km/h)
50 mph (80.47 km/h)82.75 mph (133.17 km/h)
55 mph (88.51 km/h)91.02 mph (146.49 km/h)
60 mph (96.56 km/h)99.3 mph (159.8 km/h)
65 mph (104.61 km/h)107.57 mph (173.12 km/h)
70 mph (112.65 km/h)115.85 mph (186.44 km/h)
75 mph (120.7 km/h)124.12 mph (199.76 km/h)
80 mph (128.75 km/h)132.4 mph (213.07 km/h)
85 mph (136.79 km/h)140.67 mph (226.39 km/h)
90 mph (144.84 km/h)148.95 mph (239.71 km/h)
95 mph (152.89 km/h)157.22 mph (253.02 km/h)
100 mph (160.93 km/h)165.5 mph (266.34 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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