Did you know, that the PVC duct tape is ideal material for whitewalls for custom bike?
Whitewall tyres costs more than regular ones on Ebay, or local bike shop, and sometimes it is really hard to find them cheap.
If you want to customize your beach cruiser, you may heve it done for a few bucks (sorry for my english)
Step 1: first - make it clean
Clean your tire using sponge ang soap. Also you can use a gas, or whitespirit it also do good.
The tire becomes clean and soft