Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/75r16 vs 245/70r17 Tire Comparison Side By Side
  225/75-16 245/70-17 Difference
Diameter inches (mm) 29.29 (743.9) 30.5 (774.8) 1.22 (30.9) 4.2%
Width inches (mm) 8.86 (225) 9.65 (245) 0.79 (20) 8.9%
Circum. inches (mm) 92.01 (2337.03) 95.83 (2434.11) 3.82 (97.08) 4.2%
Sidewall Height inches (mm) 6.64 (168.75) 6.75 (171.5) 0.11 (2.75) 1.6%
Revolutions per mile (km) 688.63 (427.89) 661.16 (410.83) -27.46 (-17.06) -4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.83 mph (33.52 km/h)
25 mph (40.23 km/h)26.04 mph (41.9 km/h)
30 mph (48.28 km/h)31.25 mph (50.29 km/h)
35 mph (56.33 km/h)36.45 mph (58.67 km/h)
40 mph (64.37 km/h)41.66 mph (67.05 km/h)
45 mph (72.42 km/h)46.87 mph (75.43 km/h)
50 mph (80.47 km/h)52.08 mph (83.81 km/h)
55 mph (88.51 km/h)57.28 mph (92.19 km/h)
60 mph (96.56 km/h)62.49 mph (100.57 km/h)
65 mph (104.61 km/h)67.7 mph (108.95 km/h)
70 mph (112.65 km/h)72.91 mph (117.33 km/h)
75 mph (120.7 km/h)78.12 mph (125.71 km/h)
80 mph (128.75 km/h)83.32 mph (134.1 km/h)
85 mph (136.79 km/h)88.53 mph (142.48 km/h)
90 mph (144.84 km/h)93.74 mph (150.86 km/h)
95 mph (152.89 km/h)98.95 mph (159.24 km/h)
100 mph (160.93 km/h)104.15 mph (167.62 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
16831955210521982298237024492542267127992943305732653494367337873852408844185134
Better Fuel Economy Factory Ratios Increased Power

Most Popular 225/75-R16 Comparisons

To Top