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20 Insane Car Mods That Are Illegal In The United States

Cameron EittreimAugust 23, 2021

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4: Oversized Tires

Just like racing slicks are illegal on the streets so are oversized tires. If you’ve ever dreamed about slapping some tractor tires on your ride, you’d better keep dreaming. In most states, the size of your tires is greatly determined by the other size aspects of your vehicle. In Ohio, the size of the tire is dictated by the height of the vehicle.

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Most police know to look out for tires that don’t belong on a vehicle and you will get pulled over for it. There have been plenty of YouTube videos where obscene wheels have been put onto a vehicle, but this is far from being legal.

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3: Radar Detectors

The police clearly don’t want you to know that they are tracking your speed. This is why radar detectors are illegal and there is no legality to using one. You might think that you are getting away with speeding but most cops have upgraded their own tools to detect radar detection systems in cars.

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Needless to say, you are probably going to be pulled over and the confrontation probably isn’t going to be too nice. The rise of radar detectors was once a popular subject, but nowadays most police are hip to drivers doing this method.

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2: Rolling Coal

There is no doubt that you’ve missed those lifted 4X4 trucks spewing black smoke all over the road. This is a term that’s dubbed “rolling coal” and it’s illegal in most states. The black smoke chips that we covered earlier in the article are only a small portion of the problem. Some older diesel trucks just spew black smoke naturally and the owners do this on purpose.

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There are many instances where rolling coal has caused a road rage incident between two or more drivers. The end result is never pretty and you can bet that you’ll have a lot of issues when it comes to rolling coal. Rolling coal might seem like fun but the negative impact on your wallet won’t be.

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1: Catalytic Converter Delete

Catalytic converters are an important part of the emissions system that’s put into your vehicle. If you bypass this system you are going to be in trouble with the smog authorities in your state. Nevertheless, many people tend to find a way to cut out or bypass this system to increase the performance or the sound of their vehicle.

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There is no right way to do this, and most automakers have installed computer systems that let the vehicle know when the airflow just isn’t right. When you remove a catalytic converter you are removing an important part of the vehicle, and this usually won’t work out.

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