Spooky_Action

Any gas other than plain old air in your automobile tires would officially slide into the dread and uselessly expensive category known as overkill. Helium would have zero advantageous effect over air. What is far more important than the type of air that's in our tires is how MUCH sir in in them! That is...correct air pressure. This drastically effects the true physics of your car's handling, safety, and of course gas mileage.