Take casings that you already have and know the history of to your local truck tire retreader. Better results IMHO.
Mike.
Treadwright says not to send in your casings, since you may not get those particular ones back, and it becomes less coss effective when you include shipping them there.
I spent yesterday researching Treadwright, and almost all of the reviews were from people using them for rock climbing or mud trails. I found none from people using them for high mile or highway speed/towing speed applications.
They have a few different tread patters depending on your tire size. The most common is their GuardDog pattern, which is similar to a Goodyear MTR/Discoverer STT pattern. Pretty aggressive, but most people don't complain about that. They have another pattern called Warden, which is similar to the BFG A/T, and another design, Sentinal, that is similar to a Cooper Discoverer A/T3.
I've read only a few reports of people having problems with the tires, and that their customer service is great. Seems if you have a problem and you contact them, they will get a new tire out to you at no charge. Try that with anybody else!
One of our guys with a Dodge 2500 gasser has the GuardDogs on his truck and really likes them. He has less than 3,000 miles on them so far, just back and forth to work, so no heavy work on them yet. When he told me they were retreads, I thought he was wrong. There is no indication that they are, since they don't have that tell-tale rubber blob/strip between casing and tread.
Treadwright even offers something called "Kedge Grip" which involves crushed glass and walnut shell grindings (1 mm) in their tread. Apparently, the walnut shells are sacrificial, so when the road removes the little walnut pieces, the tread is left with the walnut void, which in turn gives more biting edges to the rubber, much like sipes. I'm not sure how the crushed glass helps, but people rave about the traction in the rain and icy snow conditions. The Kedge option is $10/tire, but tires wear 10-20% faster due to less rubber.
For those with 19. 5s, they also offer 2 patterns. One looks like a good highway pattern that would do fine on snow and even wet dirt trails. The other is a very aggressive off road pattern.
I priced out (4) 225/70/19. 5s at $520 delivered to my shop. (Shipping was $84 of that price). The only drawback I could find is that the tread depth on the highway pattern I picked was listed as only 14/32". The Bandag retreads we normally get are 22/32" and cost $150/tire plus tax, but no shipping. So, roughly $30 more/tire gives me 8/32" more tread and less labor over time replacing tires, assuming I would get more miles using deeper tread...
And for the inevitable "retreads are junk" comments, let me say that I've been using retreads since 1986 and haven't had a blow-out or tread separation on any truck until last Friday... and that was a brand new truck with virgin tires!!! I thought that was funny in a way. That truck apparently ran over a board with nails, poked 2 holes, tire pressure dropped, tire got hot and blew! That truck now has 9 virgin tires and a half-worn retread. Half worn to match the outside diameter of the half-worn virgin tire next to it. (word to the wise... in a tandem/dually situation, always match tire diameters whenever you can. A full tread tire right next to a half tread tire means more weight will be carried by the taller tire, thus more traction on that tire, less on the shorter one. The tire next to it will be dragged along an extra couple inches per revolution, wearing the shorter tire and putting extra drag on the taller tire, scalloping the tread and ruining two tires... )