Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
335/25r22 vs 335/30r20 Tire Comparison Side By Side
  335/25-22 335/30-20 Difference
Diameter inches (mm) 28.59 (726.3) 27.91 (709) -0.68 (-17.3) -2.4%
Width inches (mm) 13.19 (335) 13.19 (335) 0 (0) 0%
Circum. inches (mm) 89.83 (2281.74) 87.69 (2227.39) -2.14 (-54.35) -2.4%
Sidewall Height inches (mm) 3.3 (83.75) 3.96 (100.5) 0.66 (16.75) 20%
Revolutions per mile (km) 705.31 (438.26) 722.52 (448.96) 17.21 (10.69) 2.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.52 mph (31.42 km/h)
25 mph (40.23 km/h)24.4 mph (39.28 km/h)
30 mph (48.28 km/h)29.29 mph (47.13 km/h)
35 mph (56.33 km/h)34.17 mph (54.99 km/h)
40 mph (64.37 km/h)39.05 mph (62.84 km/h)
45 mph (72.42 km/h)43.93 mph (70.7 km/h)
50 mph (80.47 km/h)48.81 mph (78.55 km/h)
55 mph (88.51 km/h)53.69 mph (86.41 km/h)
60 mph (96.56 km/h)58.57 mph (94.26 km/h)
65 mph (104.61 km/h)63.45 mph (102.12 km/h)
70 mph (112.65 km/h)68.33 mph (109.97 km/h)
75 mph (120.7 km/h)73.21 mph (117.83 km/h)
80 mph (128.75 km/h)78.09 mph (125.68 km/h)
85 mph (136.79 km/h)82.98 mph (133.54 km/h)
90 mph (144.84 km/h)87.86 mph (141.39 km/h)
95 mph (152.89 km/h)92.74 mph (149.25 km/h)
100 mph (160.93 km/h)97.62 mph (157.1 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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