There are 19 cars at the lot, so there are 5 * 19 = <<19*5=95>>95 wheels of cars.
So there are 117 - 95 = <<117-95=22>>22 wheels of motorcycles in the parking lot.
Each motorcycle has 2 wheels, so that leaves us with 22 / 2 = <<22/2=11>>11 motorcycles in the parking lot.
#### 11