Please tell us you didn't unleash ALL of the power of an OM617 300D in a parking lot!!!

Yes, it was likely the new surface allowing the tire to slip making a squealing noise. Shops with sealed concrete floors or painted floors make a loud squealing noise on any turn even at crawl-like speeds.

Carry on and good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer