Cars are machines made of various parts that go through wear and tear. Although some of these parts can be repaired, they need to be replaced after some time, mostly when they have developed significant problems which can’t be fixed. Replacing these parts is crucial as it ensures your car is performing well and reduces instances of accidents. It can also save you money. As a car owner, you might be wondering when is the best time to replace various parts of your vehicle. Read on to learn more.


Car tires develop wear and tear over time as they are responsible for holding the entire weight of the vehicle and its occupants. Since tires are available in different types, it’s crucial to replace them by following the manufacturers’ specifications. 

Also, when the wheels show signs of damage, such as having shallow treads and cuts on the sidewalls, it’s time to get some brand new Michelin Tires


Generally, car batteries should be replaced after every three years. However, you might have to replace them often, based on factors such as your driving habits and climate. Extreme temperatures, whether very hot or very cold, can negatively affect your vehicle’s battery, making it have a shorter life.

Also, your driving habits over a long period affect your battery and determine whether it will have a shorter or longer life. If your car stays in the garage for a long time, the engine drains passively, which leads to decreased performance. 

You need to replace your battery according to the manufacturer’s recommendations or when it starts showing signs of damage such as slow engine performance, bloated battery case, and battery fluid leak. 

Spark Plugs

Spark plugs ensure that a vehicle is operating at its peak condition. Damaged spark plugs can lead to problems such as slow acceleration, poor gas mileage, engine starting problems, and misfires. Generally, these plugs should be replaced after around 100,000 miles. 

However, if they develop problems before that, you should replace them. One of the common signs of spark plugs is engine issues. 

Exterior Lights

You don’t have to wait until your car lights blow to replace them. That could land you in problems like accidents and crashing with law enforcement. If your headlights are on most of the time, you will need to replace them more often as they are more likely to burn out faster. Also, as these lights age, their light production reduces, which affects proper visibility. Generally, it’s advisable to replace these lights when their light level diminishes to a great extent. 

The headlights should also be inspected for any signs of damage from time to time. 

Brake Rotors

Brake rotors are a crucial part of a car’s braking system. Since they are greatly affected by friction, brake rotors get affected every time you press the brake pedal. That means if you press them regularly, your rotors experience wear and tear more frequently and need to be replaced more often. 

These rotors and other brake components should be inspected regularly for significant wear and tear. Generally, these rotors should be replaced after around 70,000 miles but may need to be replaced more often when they have problems. 

Locks And Door Handles

Locks and door handles are often used and develop wear and tear over time. You need to replace the handles when they get jammed or come off. You need to replace the locks when the keys fail to turn in.

Almost all car parts require a replacement after some time. Ensure you do the replacements according to their manufacturer’s specifications or when they stop working as they should. You don’t need to wait until they stop working completely. There are also a few things you can do to increase the lifespan of these parts, such as proper maintenance and avoiding rough driving.