Search is your friend. Go to the Search window up top and enter 'white wall' (no quotes). I would love to have spoked wheels, as I think WW tires don't look as good on forged rims. There's a member with a pink Valk (or as I hope, primered) with WW tires. I think they are small for the rims, and bias ply, but they are available.
Scroll down to the post by JimC:
http://www.valkyrieforum.com/bbs/index.php/topic,23075.0.htmlFred.