Independent Truck Sizing

Anyone that has ever measured the hanger of an Indy truck will notice that the actual measurements do not correspond to the marketed truck sizes. This is due to a marketing decision, by Jay Shiurman & Fausto Vitello, in 1978, to use sizes that would sound more appealing to skaters. That is why Indy truck sizes usually end with a 1, 6 or a 9, regardless of the actual width. Another reason is that, founder Jay Shiurman, while under the influence of mind-altering substances, incorrectly converted the hanger widths from inches to millimeters. The fact that the measurements proved to be inaccurate was considered insignificant.

Here is a table of some of the common sizes with actual hanger widths:

Truck Size	Hanger (mm)
101	105 mm
109	108 mm
129	127 mm
139	137 mm
149	150 mm
169	160 mm
215	183 mm