Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/75r16 vs 265/75r16 Tire Comparison Side By Side
  205/75-16 265/75-16 Difference
Diameter inches (mm) 28.11 (713.9) 31.65 (803.9) 3.54 (90) 12.6%
Width inches (mm) 8.07 (205) 10.43 (265) 2.36 (60) 29.3%
Circum. inches (mm) 88.3 (2242.78) 99.43 (2525.53) 11.13 (282.74) 12.6%
Sidewall Height inches (mm) 6.05 (153.75) 7.82 (198.75) 1.77 (45) 29.3%
Revolutions per mile (km) 717.57 (445.87) 637.23 (395.96) -80.33 (-49.92) -11.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.52 mph (36.24 km/h)
25 mph (40.23 km/h)28.15 mph (45.31 km/h)
30 mph (48.28 km/h)33.78 mph (54.37 km/h)
35 mph (56.33 km/h)39.41 mph (63.43 km/h)
40 mph (64.37 km/h)45.04 mph (72.49 km/h)
45 mph (72.42 km/h)50.67 mph (81.55 km/h)
50 mph (80.47 km/h)56.3 mph (90.61 km/h)
55 mph (88.51 km/h)61.93 mph (99.67 km/h)
60 mph (96.56 km/h)67.56 mph (108.73 km/h)
65 mph (104.61 km/h)73.19 mph (117.8 km/h)
70 mph (112.65 km/h)78.82 mph (126.86 km/h)
75 mph (120.7 km/h)84.46 mph (135.92 km/h)
80 mph (128.75 km/h)90.09 mph (144.98 km/h)
85 mph (136.79 km/h)95.72 mph (154.04 km/h)
90 mph (144.84 km/h)101.35 mph (163.1 km/h)
95 mph (152.89 km/h)106.98 mph (172.16 km/h)
100 mph (160.93 km/h)112.61 mph (181.22 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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