Update
I think this is probably the final update needed really. Don't think much will change. Since the last update: It rained the two following days after the spray down test, then we had several very hot and humid days, a couple breaking 100. SO this tires has has a beating just sitting there.
In this first pic the Meg's still apears to have the most shine. Well I guess it does but its also dirtier than the rest. Talking caked on nasty. Water spots as well.
After a very light washing with a mild soap and MF rag you will notice again that the Meg's is the only one still beading. Don't let that fool you. Again if this tire had been in use most of that dirt and residue would be slung all over your fenders and wheels.
Even after a wash there is some very stuck on dirt on the Meg's. Also interesting is that it has hard water spotting where the others don't.
After drying the Poorboy's, Nascar, and OPT remain the best. May just be my eye but I think the PB's looks slightly darker. In any regard all three would be a good choice. Its been three weeks face up in high humidity, uper 90s, getting sprayed, rained and sprinklered on. I think these three did the best. The No Touch and Turtle were just bad. The Meg's...well I still want to try it again but being more buffed down and see if it will be less tacky. I may save a small spot for it on the next test.
I have had several requests for other brands so give me some time (been very busy) and I'll start up another round of testing.
Thanks for the looking and for the comments.