I have the Std Harley Dunlop on the rear and a new Pirelli night dragon on the front, I'll try and measure them tomorrow.
Cheers
Sorry mate I didn't get all the layers of covers off her today, busy welding and grinding up the new work platform for her.
Try and get them off tomorrow, but as stated 180 should be 180 or as close as the manufacturing tolerances I guess :)
OK got it done today for you, sorry about the delay.
The rear stock Harley tractor Dunlop is right on 180 mm.
The front Pirelli Night Dragon was 138 mm, which is 2 mm smaller than the old front Dunlop if I remember the measurement I took to make my front tire stand to hold the bike upright.
Good luck with the mods hope it works out for you :)
No problems mate, sorry it took so long :(