My white walls are yellowed a bit..I tried a spray-on oxyclean with no real improvement. I am sure there is a commercially manufactured product out there but wanted to see if anyone has a good home remedy to whiten them up.
I had wide white walls on my last bike. I would put the bike on a jack so I could spin the wheels. Get some Westley's Bleach White in liquid form and use a green scotch brite pad. Scrub the entire white wall then cut a rag into strips and use the strips to wipe it off while spinning the wheel. If they are really dirty or yellowed, it may take a couple of times to get it back white. Once you get them clean, then maintaining it is a lot easier. I tried most everything else before this and the Westley's Bleach White worked the best for me. You can get it at Wal Mart. The scotch brite pad I used was the one made for the kitchen with a sponge on one side. Hope this helps, Bennie.
Wesleys white wall cleaner if they are not real dirty. Add a SOS pad with warm water after spraying the Wesleys if they have built up grime! Now start cleaning before the riding season gets here.
Mr_Bill
Everything Basshawk said + treat them with armorall when your finished to make them less prone to attract the dust
Just be sure to buff the armorall completely dry