Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/90r16 vs 265/95r16 Tire Comparison Side By Side
  225/90-16 265/95-16 Difference
Diameter inches (mm) 31.94 (811.4) 35.82 (909.9) 3.88 (98.5) 12.1%
Width inches (mm) 8.86 (225) 10.43 (265) 1.57 (40) 17.8%
Circum. inches (mm) 100.36 (2549.09) 112.54 (2858.54) 12.18 (309.45) 12.1%
Sidewall Height inches (mm) 7.97 (202.5) 9.91 (251.75) 1.94 (49.25) 24.3%
Revolutions per mile (km) 631.34 (392.3) 563 (349.83) -68.34 (-42.47) -10.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.43 mph (36.09 km/h)
25 mph (40.23 km/h)28.03 mph (45.12 km/h)
30 mph (48.28 km/h)33.64 mph (54.14 km/h)
35 mph (56.33 km/h)39.25 mph (63.16 km/h)
40 mph (64.37 km/h)44.86 mph (72.19 km/h)
45 mph (72.42 km/h)50.46 mph (81.21 km/h)
50 mph (80.47 km/h)56.07 mph (90.24 km/h)
55 mph (88.51 km/h)61.68 mph (99.26 km/h)
60 mph (96.56 km/h)67.28 mph (108.28 km/h)
65 mph (104.61 km/h)72.89 mph (117.31 km/h)
70 mph (112.65 km/h)78.5 mph (126.33 km/h)
75 mph (120.7 km/h)84.1 mph (135.35 km/h)
80 mph (128.75 km/h)89.71 mph (144.38 km/h)
85 mph (136.79 km/h)95.32 mph (153.4 km/h)
90 mph (144.84 km/h)100.93 mph (162.42 km/h)
95 mph (152.89 km/h)106.53 mph (171.45 km/h)
100 mph (160.93 km/h)112.14 mph (180.47 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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