Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r28 vs 255/30r28 Tire Comparison Side By Side
  295/25-28 255/30-28 Difference
Diameter inches (mm) 33.81 (858.7) 34.02 (864.2) 0.22 (5.5) 0.6%
Width inches (mm) 11.61 (295) 10.04 (255) -1.57 (-40) -13.6%
Circum. inches (mm) 106.21 (2697.69) 106.89 (2714.96) 0.68 (17.28) 0.6%
Sidewall Height inches (mm) 2.9 (73.75) 3.01 (76.5) 0.11 (2.75) 3.7%
Revolutions per mile (km) 596.56 (370.69) 592.77 (368.33) -3.8 (-2.36) -0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.13 mph (32.39 km/h)
25 mph (40.23 km/h)25.16 mph (40.49 km/h)
30 mph (48.28 km/h)30.19 mph (48.59 km/h)
35 mph (56.33 km/h)35.22 mph (56.69 km/h)
40 mph (64.37 km/h)40.26 mph (64.79 km/h)
45 mph (72.42 km/h)45.29 mph (72.88 km/h)
50 mph (80.47 km/h)50.32 mph (80.98 km/h)
55 mph (88.51 km/h)55.35 mph (89.08 km/h)
60 mph (96.56 km/h)60.38 mph (97.18 km/h)
65 mph (104.61 km/h)65.42 mph (105.28 km/h)
70 mph (112.65 km/h)70.45 mph (113.38 km/h)
75 mph (120.7 km/h)75.48 mph (121.47 km/h)
80 mph (128.75 km/h)80.51 mph (129.57 km/h)
85 mph (136.79 km/h)85.54 mph (137.67 km/h)
90 mph (144.84 km/h)90.58 mph (145.77 km/h)
95 mph (152.89 km/h)95.61 mph (153.87 km/h)
100 mph (160.93 km/h)100.64 mph (161.97 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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