Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/65r16 vs 255/70r16 Tire Comparison Side By Side
  225/65-16 255/70-16 Difference
Diameter inches (mm) 27.52 (698.9) 30.06 (763.4) 2.54 (64.5) 9.2%
Width inches (mm) 8.86 (225) 10.04 (255) 1.18 (30) 13.3%
Circum. inches (mm) 86.44 (2195.66) 94.42 (2398.29) 7.98 (202.63) 9.2%
Sidewall Height inches (mm) 5.76 (146.25) 7.03 (178.5) 1.27 (32.25) 22.1%
Revolutions per mile (km) 732.97 (455.44) 671.04 (416.96) -61.93 (-38.48) -8.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.85 mph (35.16 km/h)
25 mph (40.23 km/h)27.31 mph (43.95 km/h)
30 mph (48.28 km/h)32.77 mph (52.74 km/h)
35 mph (56.33 km/h)38.23 mph (61.53 km/h)
40 mph (64.37 km/h)43.69 mph (70.31 km/h)
45 mph (72.42 km/h)49.15 mph (79.1 km/h)
50 mph (80.47 km/h)54.61 mph (87.89 km/h)
55 mph (88.51 km/h)60.08 mph (96.68 km/h)
60 mph (96.56 km/h)65.54 mph (105.47 km/h)
65 mph (104.61 km/h)71 mph (114.26 km/h)
70 mph (112.65 km/h)76.46 mph (123.05 km/h)
75 mph (120.7 km/h)81.92 mph (131.84 km/h)
80 mph (128.75 km/h)87.38 mph (140.63 km/h)
85 mph (136.79 km/h)92.84 mph (149.42 km/h)
90 mph (144.84 km/h)98.31 mph (158.21 km/h)
95 mph (152.89 km/h)103.77 mph (167 km/h)
100 mph (160.93 km/h)109.23 mph (175.79 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
17081984213622312333240524852580271028412987310333143546372838443909414944845210
Better Fuel Economy Factory Ratios Increased Power

Most Popular 225/65-R16 Comparisons

To Top