Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/70r19.5 vs 285/75r16 Tire Comparison Side By Side
  245/70-19.5 285/75-16 Difference
Diameter inches (mm) 33 (838.3) 32.83 (833.9) -0.17 (-4.4) -0.5%
Width inches (mm) 9.65 (245) 11.22 (285) 1.57 (40) 16.3%
Circum. inches (mm) 103.68 (2633.6) 103.14 (2619.77) -0.54 (-13.82) -0.5%
Sidewall Height inches (mm) 6.75 (171.5) 8.42 (213.75) 1.66 (42.25) 24.6%
Revolutions per mile (km) 611.08 (379.71) 614.31 (381.71) 3.22 (2) 0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.9 mph (32.02 km/h)
25 mph (40.23 km/h)24.87 mph (40.02 km/h)
30 mph (48.28 km/h)29.84 mph (48.03 km/h)
35 mph (56.33 km/h)34.82 mph (56.03 km/h)
40 mph (64.37 km/h)39.79 mph (64.04 km/h)
45 mph (72.42 km/h)44.76 mph (72.04 km/h)
50 mph (80.47 km/h)49.74 mph (80.05 km/h)
55 mph (88.51 km/h)54.71 mph (88.05 km/h)
60 mph (96.56 km/h)59.69 mph (96.05 km/h)
65 mph (104.61 km/h)64.66 mph (104.06 km/h)
70 mph (112.65 km/h)69.63 mph (112.06 km/h)
75 mph (120.7 km/h)74.61 mph (120.07 km/h)
80 mph (128.75 km/h)79.58 mph (128.07 km/h)
85 mph (136.79 km/h)84.55 mph (136.08 km/h)
90 mph (144.84 km/h)89.53 mph (144.08 km/h)
95 mph (152.89 km/h)94.5 mph (152.09 km/h)
100 mph (160.93 km/h)99.48 mph (160.09 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
15631816195620422135220222752362248126012734284130333246341335193579379841044770
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/70-R19.5 Comparisons

To Top