why lights are always on?

I just downloaded this car so not much experience but I did upgrade it and honestly, the car handled and sounded better in the previous version. Any way for me to keep the visual changes but use the tires / physiques and sound from the previous version? Thank you for your hard work!

Never mind... After driving the car for some time, the new tire model is much better. You did an amazing job on the car, thank you!! Only one problem... it gets stuck on grass.. zero traction.

This will become one of my all time favorites now. Would still like to know when the RS model drops.