Xceed foams has always been made by Jaco. I know this from 1/10th nitro as all the Xceed 1/10 foams are made by Jaco so it would be obvious the 1/12 is the same. However, Jaco claims that their tires are pre-trued and ready to run straight out of the box. Not sure if that is true with the Xceed. Try a set and see. Worst case all you need to do is put them on a truer. If not then you'll save a few pennies because they're slightly less than the Jaco branded ones.