* Wheels: Wheel bolt patterns and sizes can change subtly between model years. Even if the bolt pattern is the same, the center bore (the hole in the middle of the wheel) or overall wheel offset might be different, preventing proper fitment.
* Tire Pressure Sensors: TPMS systems are not standardized across all years and models. The sensors themselves are different, and the car's computer system is programmed for specific sensor frequencies and protocols. A 2001 sensor likely won't be recognized by the 1999's computer, leading to TPMS warning lights and potentially inaccurate readings.
You'll need to source wheels and sensors specifically designed for a 1999 Corvette to ensure proper fitment and functionality.