First of all, for the record I know this tire is a terd. I guess Michelin does too, that is why it is discontinued.
I sold my last 22996331/41120 out of stock yesterday and I know we will all soon be faced with the same issue. A direct replacement for those 1 or 2 tire needs.
I consulted with GM Tire and my local wholesale tire rep. They both say this: The 18” Premier LTX Tire pt# 22996331/41120 is discontinued but Michelin did not give us a replacement part number. So while the 84752905/24419 Primacy Tour A/S may be the same size and speed rating, it is not shown as an equal replacement, meaning they shouldn’t be mix matched.
There is also the 19426061/21864 Premier LTX in the 106V, but the don't recommend replacing just 1 either.