Depending on the tire pressure? If it's above 30, it's going to be loud enough to be heard if someone is within a hundred feet. If they're inside a building, you'd probably be mistaken for something else going on in the building. A knife into a 40 PSI tire is enough to make your ears ring for a second or two.

I think the SUVs they'd be using are going to be somewhere in the realm of 35-50. Tahoes were around 38-40 when I drove one.

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