I just cleaned the tire with ajax. I kept wondering what would be a good tire dressing and I thought why not try KIWI edge dessing for shoe heels and soles. When I was done putting it on I couldn't believe how good it looked. It's used for rubber and it's water resistant. You should all try it. I won't use nothing else.
Oh by the way the sponge tip applicator will more that likely wear away, so try using cotton balls and make sure to wear gloves perferably latex.
It couldn't be more then $2.50 per bottle
One botlle is enough for all four tires with plenty to spare for a second coat

I seem to remember using that stuff in the Air Force on my combat boots. Let me know how it works out for you on your tires - I believe that it used to chip off if applied to thick. I don't know how well it will last on rubber tires. Can you send photos?

Uhhh Are you talking about tire shine material? If so Meguiars hot shine tire coating is the best I have used like all of them while detailing cars and that is the easiest/best around by far!