I agree with GT-40... do a John Force burnout. I've raced on street radials for years and the dogma is to just 'spin them enough to clean the tread'--I could never cut better than a 2.2 that way in the HD. Just for grins and to amuse my buddies I did a smokin' hundred foot burnout and staged... cracked off a 2.0! Tried it a few more times and ended up with a best of 1.92... have also ran several other 1.9xx's--all on the stock Goodyears. All of my times are on stock rubber (pressure at 24-26 lbs), 130 lb bed cover, tailgate and spare tire in place all on 92 octane. Hey--run what ya' brung!
I did just pick up a set of used 16" ET Streets--gotta catch some of that 'mineshaft' air and pull off all the weight I can for one max effort attempt to see what the truck will really do...
Sold--'02 HD, DSG, mods: more than yours...
'93 Silver/Black LX Coupe, mods: even more...
'05 GMC Sierra Denali Crew Cab, Silver/Grey, AWD, 6 liter, moonroof, DVD, Rhinoliner, full tint... quiet, comfortable, and gets 17 mpg--running regular gas. It's no Harley, but I like it!