Tire width varies widely by manufacturer. I measured a Metzeler ME880 at over 105 mm, a Bridgestone Spitfire at 100 mm, a Pireli and a Dunlop at just over 90 mm. These were all 100/90-19 tires.
FWIW, I’m quicker in the turns on the smaller tires.
FWIW, I’m quicker in the turns on the smaller tires.