WJCO
Meme King
285 is the width. 70 is the aspect ratio (height in relation to width). 285/70r17, is about 32.8 in diameter with no weight on the vehicle. Slightly taller than oem 255/75R17 (32 inches).
From the Google Masters: "The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be."
From the Google Masters: "The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be."