Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
325/35r28 vs 295/35r24 Tire Comparison Side By Side
  325/35-28 295/35-24 Difference
Diameter inches (mm) 36.96 (938.7) 32.13 (816.1) -4.83 (-122.6) -13.1%
Width inches (mm) 12.8 (325) 11.61 (295) -1.18 (-30) -9.2%
Circum. inches (mm) 116.1 (2949.01) 100.94 (2563.85) -15.16 (-385.16) -13.1%
Sidewall Height inches (mm) 4.48 (113.75) 4.06 (103.25) -0.41 (-10.5) -9.2%
Revolutions per mile (km) 545.72 (339.1) 627.71 (390.04) 81.98 (50.94) 15%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.39 mph (27.98 km/h)
25 mph (40.23 km/h)21.73 mph (34.98 km/h)
30 mph (48.28 km/h)26.08 mph (41.97 km/h)
35 mph (56.33 km/h)30.43 mph (48.97 km/h)
40 mph (64.37 km/h)34.78 mph (55.97 km/h)
45 mph (72.42 km/h)39.12 mph (62.96 km/h)
50 mph (80.47 km/h)43.47 mph (69.96 km/h)
55 mph (88.51 km/h)47.82 mph (76.95 km/h)
60 mph (96.56 km/h)52.16 mph (83.95 km/h)
65 mph (104.61 km/h)56.51 mph (90.95 km/h)
70 mph (112.65 km/h)60.86 mph (97.94 km/h)
75 mph (120.7 km/h)65.2 mph (104.94 km/h)
80 mph (128.75 km/h)69.55 mph (111.93 km/h)
85 mph (136.79 km/h)73.9 mph (118.93 km/h)
90 mph (144.84 km/h)78.25 mph (125.92 km/h)
95 mph (152.89 km/h)82.59 mph (132.92 km/h)
100 mph (160.93 km/h)86.94 mph (139.92 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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