Microtonal, Do you have the source for the info you posted a link to. I'm asking because I think it contains an error. It says the 205 (in the example provided) is the tread width. I actually believe it stands for the overall width of the tire (sidewall to sidewall). Here's tireracks explanation www.tirerack.com/tires/tiretech/general/size.htm they seem to agree with what i have represented. Could be one of those details that may confuss someone.