Exhaust tips are a popular upgrade for vehicles, as they can give a car a unique, personalized touch. But when choosing and installing an exhaust tip, it's important to get size and placement just right to ensure optimal performance and look. So, how far should exhaust tips stick out?

When installing an exhaust tip, tip should be placed so that it’s parallel to ground and should extend past end of exhaust pipe by approximately same length as diameter of pipe. For example, if diameter of exhaust pipe is 3 inches, tip should extend out past end of exhaust pipe by about 3 inches for best results.

It's also important to make sure exhaust tip does not stick out too far – if it's too long, it won't improve performance of vehicle and might even impede it. The protrusion of exhaust tip should not exceed one sixth of pipe's diameter and should not be more than twice diameter of tailpipe. Any longer than that and exhaust gases won't be able to escape as efficiently.

In addition, exhaust tip should be positioned so that it's straight and at correct angle. This will help ensure that engine is able to produce maximum power, as it helps exhaust gases escape more easily. If it's angled too far up or too far down, exhaust gases will be directed away from engine and this can reduce performance.

Finally, exhaust tip should be placed so that it doesn't bottom out or touch bumper or any other part of vehicle. This could cause damage to vehicle and impact its performance.

Overall, there isn't a one-size-fits-all answer to how far exhaust tips should stick out. However, following these guidelines will help ensure that exhaust tip is placed correctly and will help optimize performance of vehicle. By considering diameter of pipe, length of tip, angle of tip, and proximity to other components of vehicle, you can ensure that exhaust tip is in its correct position and will provide best results.