Car enthusiasts across make modifications to their car. Some are simply cosmetic, but others affect the car’s performance. There are tons of car modifications that are totally harmless, but others are likely to get the car’s owner slapped with a ticket and fine because the alteration isn’t actually street legal.

If you’re new to the idea of modifying your car, you might be surprised to learn that some cosmetic enhancements can land you on the wrong side of the law, but there are plenty of performance upgrades that are no problem at all. Here, we’ll look at some of both. We’ll start with the legal ones first. (Of course you should check the laws in your state as they can vary.

As long as you stay within your state’s limits for ride height adjustments, an aftermarket suspension system is totally legal. Furthermore, the right aftermarket suspension system can be a great way to upgrade your car’s performance. When done right, your car will handle much better, and you (or a qualified shop) can even tune the suspension to optimize the car for the way you drive. Whether you race your car or you just want your commute to be a little more enjoyable, a good suspension system is arguably worth the investment.