The plastic cover over the back bumper? If you mount your new exhaust upside down, you'll actually melt it. It will melt your car. Exhaust pipes... park a low clearance car like a Corvette over a pile of leaves and the leaves will catch fire in a few minutes.

Whenever the subject of global warming comes up, people start babbling about the CO2 cars put out. I've tended to point out that, if you've had an ambulance, fire truck, or big diesel rig drive by, you've probably noticed the "standing in front of a furnace" effect. We have tons of these, plus lots of little cars, belching tons of heat. Your car is a very inefficient heat engine; its entire power output is a small fraction of the raw heat generated from burning gasoline. The act of moving the car actually cools the exhaust gases, but the heat just moves into the engine block and radiates out from there, the oil pan, and the radiator.

Numbers I've heard for **** Cycle efficiency have ranged from 9% to 30%.

Now, think about twice the power of your engine coming out of that little exhaust pipe as pure heat.

Surprised your tire melted? (For that matter, are you surprised big cities are so friggin' hot?)