Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
345/30r19 vs 295/30r19 Tire Comparison Side By Side
  345/30-19 295/30-19 Difference
Diameter inches (mm) 27.15 (689.6) 25.97 (659.6) -1.18 (-30) -4.4%
Width inches (mm) 13.58 (345) 11.61 (295) -1.97 (-50) -14.5%
Circum. inches (mm) 85.29 (2166.44) 81.58 (2072.19) -3.71 (-94.25) -4.4%
Sidewall Height inches (mm) 4.07 (103.5) 3.48 (88.5) -0.59 (-15) -14.5%
Revolutions per mile (km) 742.85 (461.59) 776.64 (482.58) 33.79 (20.99) 4.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.13 mph (30.79 km/h)
25 mph (40.23 km/h)23.91 mph (38.48 km/h)
30 mph (48.28 km/h)28.69 mph (46.18 km/h)
35 mph (56.33 km/h)33.48 mph (53.88 km/h)
40 mph (64.37 km/h)38.26 mph (61.57 km/h)
45 mph (72.42 km/h)43.04 mph (69.27 km/h)
50 mph (80.47 km/h)47.82 mph (76.97 km/h)
55 mph (88.51 km/h)52.61 mph (84.66 km/h)
60 mph (96.56 km/h)57.39 mph (92.36 km/h)
65 mph (104.61 km/h)62.17 mph (100.06 km/h)
70 mph (112.65 km/h)66.95 mph (107.75 km/h)
75 mph (120.7 km/h)71.74 mph (115.45 km/h)
80 mph (128.75 km/h)76.52 mph (123.15 km/h)
85 mph (136.79 km/h)81.3 mph (130.84 km/h)
90 mph (144.84 km/h)86.08 mph (138.54 km/h)
95 mph (152.89 km/h)90.87 mph (146.24 km/h)
100 mph (160.93 km/h)95.65 mph (153.93 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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