Mike "Wuzzy121". Rest in peace, brother

Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/85r16 vs 285/75r16 Tire Comparison Side By Side
  235/85-16 285/75-16 Difference
Diameter inches (mm) 31.73 (805.9) 32.83 (833.9) 1.1 (28) 3.5%
Width inches (mm) 9.25 (235) 11.22 (285) 1.97 (50) 21.3%
Circum. inches (mm) 99.68 (2531.81) 103.14 (2619.77) 3.46 (87.96) 3.5%
Sidewall Height inches (mm) 7.86 (199.75) 8.42 (213.75) 0.55 (14) 7%
Revolutions per mile (km) 635.65 (394.97) 614.31 (381.71) -21.34 (-13.26) -3.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.69 mph (33.31 km/h)
25 mph (40.23 km/h)25.87 mph (41.63 km/h)
30 mph (48.28 km/h)31.04 mph (49.96 km/h)
35 mph (56.33 km/h)36.22 mph (58.28 km/h)
40 mph (64.37 km/h)41.39 mph (66.61 km/h)
45 mph (72.42 km/h)46.56 mph (74.94 km/h)
50 mph (80.47 km/h)51.74 mph (83.26 km/h)
55 mph (88.51 km/h)56.91 mph (91.59 km/h)
60 mph (96.56 km/h)62.08 mph (99.92 km/h)
65 mph (104.61 km/h)67.26 mph (108.24 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 235/85-R16 Comparisons


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.