The Chinese manufacturers build what they are instructed to build. Be it management or a specific order, they build to suit the current order. Low quality on some products are because low price is determined to be more important than high quality. But they are capable of delivering a higher quality product when it is speced out in the order, (just look at Apple products)
The other thing that can be a limiting factor in their quality is materials, I doubt they are able to easily obtain large quanities of the same quality of construction materials there, that are available here.
I dont believe in their native market there is a consumer demand for tires capable of high speed use on paved surfaces with longeiviety in the 20000-30000 mile range, likely their move here is partly an attempt to avoid some tariffs, as well as to build to better suit a specific market.
I wouldnt expect any better quality initially than what they produce in China, but I would expect them to use this as a learning opportunity and to improve quality here with this move and then to export the small touches that create that improvement back to China, much as they did with RCA and Motorola.
Add on, One other likely assist is that there are numerous other tire manufacturers in the area Continental, BF Goodrich, and Michelin apparently all have facilities in NC and a large Goodyear plant is on the Va/NC border in Danville Va. The chinese will probably gain some workers from those plants and in doing so gain some insight into production and quality improvements.
