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 335/30r19 Tire Comparison Side By Side
  345/30-19 335/30-19 Difference
Diameter inches (mm) 27.15 (689.6) 26.91 (683.6) -0.24 (-6) -0.9%
Width inches (mm) 13.58 (345) 13.19 (335) -0.39 (-10) -2.9%
Circum. inches (mm) 85.29 (2166.44) 84.55 (2147.59) -0.74 (-18.85) -0.9%
Sidewall Height inches (mm) 4.07 (103.5) 3.96 (100.5) -0.12 (-3) -2.9%
Revolutions per mile (km) 742.85 (461.59) 749.37 (465.64) 6.52 (4.05) 0.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.83 mph (31.91 km/h)
25 mph (40.23 km/h)24.78 mph (39.88 km/h)
30 mph (48.28 km/h)29.74 mph (47.86 km/h)
35 mph (56.33 km/h)34.7 mph (55.84 km/h)
40 mph (64.37 km/h)39.65 mph (63.81 km/h)
45 mph (72.42 km/h)44.61 mph (71.79 km/h)
50 mph (80.47 km/h)49.56 mph (79.77 km/h)
55 mph (88.51 km/h)54.52 mph (87.74 km/h)
60 mph (96.56 km/h)59.48 mph (95.72 km/h)
65 mph (104.61 km/h)64.43 mph (103.7 km/h)
70 mph (112.65 km/h)69.39 mph (111.67 km/h)
75 mph (120.7 km/h)74.35 mph (119.65 km/h)
80 mph (128.75 km/h)79.3 mph (127.63 km/h)
85 mph (136.79 km/h)84.26 mph (135.6 km/h)
90 mph (144.84 km/h)89.22 mph (143.58 km/h)
95 mph (152.89 km/h)94.17 mph (151.56 km/h)
100 mph (160.93 km/h)99.13 mph (159.53 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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