Most probably the balance, as Tina said. Could also be that they didn't fit the wheel correctly and it's running slightly on either the left or right side of the tire - let's call it the "vertical alignment" that is out. He must take it back to the dealer and ask him very politely (with a tire-iron if necessary LOL) to fix it properly.
They didn't balance the front wheel quite correctly, and I hope to God your friend is achieving those speeds at the track and not on public roads.
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