Okay, maybe too late, but to answer the question, NO the Endura Tire and the Trim stuff are not exactly the same. A lot of MSDS searching.
BOTH are 80% water and "10-15%" acrylic polymer-- proprietary. The final 5% in he two are different. Trim stuff has ethers and glycol to penetrate; wheel stuff is different there.
So, not much different, but I am not sure about putting the ethers, etc. on the tires. Yet, the trim stuff says vinyl and rubber.
If I don't need to stain it black, I use Aerospace 303 anyway. (It's now in a new, confusing container.)