On the Westley's White Tire Cleaner...you can make the same stuff with the spray bottle, 1/4 Clorox, and 3/4 water...same stuff, much cheaper, and you don't have to worry about running out half way through the job!

Mac

 

Simple Green and a soft bristle brush,I usually wash the whities with the simple green and brush first,thenI wash them with the car wash soap when I wash the rest of the bike,and it works great.

 

I use 600 grit wet/dry sandpaper. Get the whitewall wet with a spray bottle of water and sand. Uses the same amount of elbow grease but NO water all over the bike.