Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/82r15 vs 240/95r15 Tire Comparison Side By Side
  165/82-15 240/95-15 Difference
Diameter inches (mm) 25.65 (651.6) 32.95 (837) 7.3 (185.4) 28.5%
Width inches (mm) 6.5 (165) 9.45 (240) 2.95 (75) 45.5%
Circum. inches (mm) 80.59 (2047.06) 103.52 (2629.51) 22.93 (582.45) 28.5%
Sidewall Height inches (mm) 5.33 (135.3) 8.98 (228) 3.65 (92.7) 68.5%
Revolutions per mile (km) 786.17 (488.5) 612.03 (380.3) -174.14 (-108.21) -22.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.69 mph (41.35 km/h)
25 mph (40.23 km/h)32.11 mph (51.68 km/h)
30 mph (48.28 km/h)38.54 mph (62.02 km/h)
35 mph (56.33 km/h)44.96 mph (72.35 km/h)
40 mph (64.37 km/h)51.38 mph (82.69 km/h)
45 mph (72.42 km/h)57.8 mph (93.03 km/h)
50 mph (80.47 km/h)64.23 mph (103.36 km/h)
55 mph (88.51 km/h)70.65 mph (113.7 km/h)
60 mph (96.56 km/h)77.07 mph (124.04 km/h)
65 mph (104.61 km/h)83.49 mph (134.37 km/h)
70 mph (112.65 km/h)89.92 mph (144.71 km/h)
75 mph (120.7 km/h)96.34 mph (155.04 km/h)
80 mph (128.75 km/h)102.76 mph (165.38 km/h)
85 mph (136.79 km/h)109.19 mph (175.72 km/h)
90 mph (144.84 km/h)115.61 mph (186.05 km/h)
95 mph (152.89 km/h)122.03 mph (196.39 km/h)
100 mph (160.93 km/h)128.45 mph (206.73 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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