GMT400 3500HD's (a.k.a. REAL HD's) came with 19.5's to support the 15K lb GVWR.
Ya know, before the GMT800's replaced them and they call that 10K or 11K lb GVWR truck "3500HD" with its independent front suspension, 17" tires, etc. Wutever. You want 15K lb GVWR from GM now you gotta buy a 4500. Only way to get a "light truck" body on a medium duty chassis is to buy the F450/F550 or the Dodge 4500. GM fucked up.
Richard
Post was last edited on Dec 27, 2011 01:27. Edited 1
time.