They look great, but are not available in a suitable size for the 1600 Vulcans.
Biggest WWW available is a 150/80-16... 1600 Nomad and Classic spec a 170, but it's not available in anything but the stock 'stones, and most owners end up going with a 180/70-16.
The 1500 Nomad, I believe, came with a 150/80-16 front and rear.