Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/70r16 vs 265/75r16 Tire Comparison Side By Side
  235/70-16 265/75-16 Difference
Diameter inches (mm) 28.95 (735.4) 31.65 (803.9) 2.7 (68.5) 9.3%
Width inches (mm) 9.25 (235) 10.43 (265) 1.18 (30) 12.8%
Circum. inches (mm) 90.96 (2310.33) 99.43 (2525.53) 8.47 (215.2) 9.3%
Sidewall Height inches (mm) 6.48 (164.5) 7.82 (198.75) 1.35 (34.25) 20.8%
Revolutions per mile (km) 696.59 (432.84) 637.23 (395.96) -59.36 (-36.88) -8.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.86 mph (35.19 km/h)
25 mph (40.23 km/h)27.33 mph (43.98 km/h)
30 mph (48.28 km/h)32.79 mph (52.78 km/h)
35 mph (56.33 km/h)38.26 mph (61.57 km/h)
40 mph (64.37 km/h)43.73 mph (70.37 km/h)
45 mph (72.42 km/h)49.19 mph (79.17 km/h)
50 mph (80.47 km/h)54.66 mph (87.96 km/h)
55 mph (88.51 km/h)60.12 mph (96.76 km/h)
60 mph (96.56 km/h)65.59 mph (105.56 km/h)
65 mph (104.61 km/h)71.05 mph (114.35 km/h)
70 mph (112.65 km/h)76.52 mph (123.15 km/h)
75 mph (120.7 km/h)81.99 mph (131.94 km/h)
80 mph (128.75 km/h)87.45 mph (140.74 km/h)
85 mph (136.79 km/h)92.92 mph (149.54 km/h)
90 mph (144.84 km/h)98.38 mph (158.33 km/h)
95 mph (152.89 km/h)103.85 mph (167.13 km/h)
100 mph (160.93 km/h)109.31 mph (175.93 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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