Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r18 vs 205/60r16 Tire Comparison Side By Side
  135/70-18 205/60-16 Difference
Diameter inches (mm) 25.44 (646.2) 25.69 (652.4) 0.24 (6.2) 1%
Width inches (mm) 5.31 (135) 8.07 (205) 2.76 (70) 51.9%
Circum. inches (mm) 79.93 (2030.1) 80.69 (2049.58) 0.77 (19.48) 1%
Sidewall Height inches (mm) 3.72 (94.5) 4.84 (123) 1.12 (28.5) 30.2%
Revolutions per mile (km) 792.74 (492.59) 785.21 (487.91) -7.53 (-4.68) -1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.19 mph (32.5 km/h)
25 mph (40.23 km/h)25.24 mph (40.62 km/h)
30 mph (48.28 km/h)30.29 mph (48.74 km/h)
35 mph (56.33 km/h)35.34 mph (56.87 km/h)
40 mph (64.37 km/h)40.38 mph (64.99 km/h)
45 mph (72.42 km/h)45.43 mph (73.12 km/h)
50 mph (80.47 km/h)50.48 mph (81.24 km/h)
55 mph (88.51 km/h)55.53 mph (89.36 km/h)
60 mph (96.56 km/h)60.58 mph (97.49 km/h)
65 mph (104.61 km/h)65.62 mph (105.61 km/h)
70 mph (112.65 km/h)70.67 mph (113.74 km/h)
75 mph (120.7 km/h)75.72 mph (121.86 km/h)
80 mph (128.75 km/h)80.77 mph (129.98 km/h)
85 mph (136.79 km/h)85.82 mph (138.11 km/h)
90 mph (144.84 km/h)90.86 mph (146.23 km/h)
95 mph (152.89 km/h)95.91 mph (154.35 km/h)
100 mph (160.93 km/h)100.96 mph (162.48 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
19982321250026102729281429083019317233253495363138774149436244984575485552466097
Better Fuel Economy Factory Ratios Increased Power

Most Popular 135/70-R18 Comparisons

To Top