while I have poor regard for michelin car tires, poor performance and quick tire wear and noise compared to other tires. But I have lots of good experience with Michelin LT tires. On my 2015 duramax I replace the OEM bridgestones with Michelin LTX Defender. The michelins are so much better tire for wet and dry traction than the OEM bridgestones ever where. And our son runs the same tires on my old 2004.5 duramax, same experience.
I've also run the Michelin MS2 before with good results.
While GM may think the bridgestone OEM tires my duramax came with are a great tire, I thought they really sucked for wet and dry traction. And they were not very good in light snow either. Nor did they give me very good tread life. All I could say for them is that they were a quite tire.
I don't know what the firestone OEM tires are like but since Bridgestone/Firestone are the same company, I wonder if there is any difference between the bridgestone and firestone OEM tire other than the name on the side.
At one time I liked Toyo's but Les Schwab has a stranglehold on them in areas they have stores and the prices are now outrageous. But Discount tire can order them for you. I had a set of Toyo HT on my old duramax and was happy with them.