I solved the mounting on my BMW M2. Perfect location right above the tire. This means minimal tire movement in the sensor's field of view during turning and perfect for measuring distance to tire. The 120 degree angle field of view thermal camera sensor is used, the distance is about 9-10cm when stationary so the full tire width is well inside the FOV.

I made a small 3D printed snap-in holder and just a small hole in the plastic inner fender.

I just open the hood and reach in to remove the sensor from the snap-in holder or turn it on or of.