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TCS can be a problem, but I've never heard of that problem due to replacing a new wheel or two with the same manufacturer. Te differences are too small. The only times I know of it happening is when people buy a new tire from a different manufacture as the rest, which apart from different diameter and circumference(can lead to more or less rolling per mile), they also have a different rolling resistance. People usually do this with cheap tires, which usually have much worse rolling resistance. If it has better rolling resistance, the problem is easier to cover up, but tread wear is still increased. When I read statements of people saying they are replacing a tire, I usually think of replacing the old with a new of same manufacturer. There are other problems too that can arise, but nothing is more serious than drivetrain damage.
Subaru says if you run tires different (worn with new, etc. anything that will make a noticable difference in overall diameter) it can damage the center differential. I think the tire thing only really matters with cars with true AWD systems, like Subarus, VWs and Audi. Many of the new "AWD" cars aren't really AWD, they are front wheel drive that turn to 4wd when the front wheels start to slip.