Tesla vehicles are known for their beautiful designs, high-performance capabilities, and modern technology. But a lot of owners take great pride in customizing their cars. Fortunately for you, several upgrades can be made to your Tesla model. The biggest danger to any modification is a possible void of your vehicle warranty.
The Magnuson-Moss Warranty Act states that manufacturers must prove that the modification caused the issue to deny warranty coverage for the issue. However, if you perform a wrong upgrade, or improperly install the upgrade, the warranty claims for that part or related parts could be denied.
To ensure your Tesla has all the customized features without risking a costly repair, it is important to know what modifications can be made while under warranty.

Safe Cosmetic Modifications
Most interior trim, custom floor mats, and pedal covers are safe modifications. It's normal to change wheels and tires too. Changing wheels can be pretty safe if you choose wheels of a similar size and weight, so the wheels do not place additional stress on your suspension, braking system, and motor.
For a safer improvement process, I suggest using an authorized EV installer. This will help ensure any modifications are done correctly. You can conduct a simple search for “Tesla modification near me” to see suitable local professionals.

Functional and Modest Performance Improvements
Conversely, unlike engine tuning, any unauthorized program modifications or "tunes" will void Tesla's powertrain and control system warranties. It may be smarter to make small adjustments that have no effect on the drivetrain. Otherwise, it is best to reach out directly to Tesla to find out what modifications are allowed.
Additionally, if you are searching "Tesla modifications near me", you can find specialists dedicating to EV accessories and performance upgrades as quickly as typing it in a search engine.

An Installed Professionally
Regardless of the Tesla modifications you want to perform, the quality of the installation is paramount in order to maintain your warranty. A bad installation can damage components, create wiring or electrical events or failures that may be attributed to the modification, and Tesla could void the system warranty.
For example: lighting mods can short the wiring if done incorrectly, and low-quality suspension components can damage bushings and linkages. Therefore, the best option is to go with someone you can trust who knows what they are doing.
Shops focused on electric vehicle bodywork or experienced with Tesla models are often safer options for upgrades. Always be sure to check their experience and their capabilities to perform the specific modification you require.