Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/70r14 vs 235/70r16 Tire Comparison Side By Side
  245/70-14 235/70-16 Difference
Diameter inches (mm) 27.5 (698.6) 28.95 (735.4) 1.45 (36.8) 5.3%
Width inches (mm) 9.65 (245) 9.25 (235) -0.39 (-10) -4.1%
Circum. inches (mm) 86.41 (2194.72) 90.96 (2310.33) 4.55 (115.61) 5.3%
Sidewall Height inches (mm) 6.75 (171.5) 6.48 (164.5) -0.28 (-7) -4.1%
Revolutions per mile (km) 733.28 (455.64) 696.59 (432.84) -36.69 (-22.8) -5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.05 mph (33.88 km/h)
25 mph (40.23 km/h)26.32 mph (42.35 km/h)
30 mph (48.28 km/h)31.58 mph (50.82 km/h)
35 mph (56.33 km/h)36.84 mph (59.29 km/h)
40 mph (64.37 km/h)42.11 mph (67.76 km/h)
45 mph (72.42 km/h)47.37 mph (76.24 km/h)
50 mph (80.47 km/h)52.63 mph (84.71 km/h)
55 mph (88.51 km/h)57.9 mph (93.18 km/h)
60 mph (96.56 km/h)63.16 mph (101.65 km/h)
65 mph (104.61 km/h)68.42 mph (110.12 km/h)
70 mph (112.65 km/h)73.69 mph (118.59 km/h)
75 mph (120.7 km/h)78.95 mph (127.06 km/h)
80 mph (128.75 km/h)84.21 mph (135.53 km/h)
85 mph (136.79 km/h)89.48 mph (144 km/h)
90 mph (144.84 km/h)94.74 mph (152.47 km/h)
95 mph (152.89 km/h)100 mph (160.94 km/h)
100 mph (160.93 km/h)105.27 mph (169.41 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
17732059221823162421249725802678281429493100322134403681387039904058430746545409
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/70-R14 Comparisons

To Top