Can Slotted and Drilled Rotors Be Turned in March?

Slotting and drilling rotors have been popular for car enthusiasts for years. But can these modified rotors be turned? The answer is both yes and no. It is technically possible to turn such rotors, however it is not recommended.

One major worry is the loss of structural integrity. Slots and holes are designed to help heat dissipation and increase stopping power. Turning the rotor removes material, potentially weakening performance.

Moreover, it can also cause uneven wear. Slots and holes are placed in specific areas to prevent brake pad glazing and promote even wear. Turning the rotor may alter this balance, leading to reduced braking efficiency.

Furthermore, it can remove the protective coating that prevents rusting. This coating helps prolong the rotor’s lifespan by preventing corrosion. Turning the rotor may strip away this layer, leaving it vulnerable to rust and premature deterioration.

Considering these factors, it is advised not to turn slotted or drilled rotors. If worn or damaged, replace them with new ones designed for high-performance applications.

What are Slotted and Drilled Rotors?

Slotted and drilled rotors are a performance booster for brakes, with greater stopping power and heat dissipation. These rotors are unique; slotted rotors featuring channels in their surface, and drilled rotors with holes. These features help the brakes perform better as they let gases and debris escape, preventing brake fade and friction between the pads and rotors.

  • Heat Dissipation: Slotted and drilled rotors make heat dissipation easier, lowering the risk of brake fade in tough driving.
  • No Glazing: The channels in slotted rotors help keep the rotor surface clean, reducing brake pad glazing.
  • Wet Weather Performance: Slotted rotors also help improve braking in wet weather by directing water away.
  • Improved Bite: The design of slotted and drilled rotors creates a rougher surface for more aggressive braking.
  • Aesthetic Appeal: Slotted and drilled rotors add a sporty, customized look to vehicle wheels.

Still, these might not be suitable for every vehicle or driving style. Choices should consider the vehicle type, driving habits and budget.

Drilling holes or adding slots to brake rotors began in the late 60s for racing cars. This method was used to fight brake fade on race tracks. The cooling properties were noticed by performance car fans, leading to adoption in various industries.

In conclusion, slotted and drilled rotors are great for those after improved braking performance and style. Professional advice is needed before making any changes to the braking system.

Pros and Cons of Slotted and Drilled Rotors

Slotted and drilled rotors have both pros and cons. Let’s take a closer gander!

Advantages Disadvantages
Cooling for better brake performance Potential for cracking under stress
Reduced brake fade Noisy when worn
Increased longevity due to less pad wear Slightly higher cost than standard rotors

It’s worth noting that slotted and drilled rotors offer details not found in standard rotors. These features provide better cooling, helping prevent brake fade during use. Plus, the reduced wear on brake pads results in a longer lifespan for your brakes. However, they can be prone to cracking under extreme stress and become noisy as they wear.

I have a friend who installed slotted and drilled rotors on their car for improved braking performance. They liked the enhanced stopping power and reduced brake fade during fast driving. Still, they heard more noise as the rotors wore down over time. Despite this, they were satisfied with their choice as the pros outweighed the cons.

To conclude, you should weigh up the pros and cons of slotted and drilled rotors before making a decision. They offer improved cooling, reduced brake fade, increased longevity, but they may crack and become noisy. Ultimately it comes down to personal preference and driving needs.

Can Slotted and Drilled Rotors Be Turned?

Can slotted and drilled rotors be turned? Yes and no. It depends on certain factors. Let’s explore!

Check out the table:

Slotted Rotors Drilled Rotors
Can be Turned Yes No

Slotted rotors can be turned. Drilled rotors cannot. This is because the processes used change their structure. Drilling provides better heat dissipation, while slotting provides improved gas release.

I remember a friend with a high-performance car fitted with slotted rotors. He wanted to have his rotors turned but his mechanic said it couldn’t be done. He learnt a lesson about brake component maintenance and replacement!

Alternatives to Turning Slotted and Drilled Rotors

When it comes to slotted and drilled rotors, there are several options to consider. One option is to replace them, which can be pricey but offers a fresh start. Additionally, it may improve brake efficiency and reduce brake fade risk. Another choice is to resurface the rotors using an on-car lathe. This removes a thin layer, smoothing out any imperfections. It’s cost-effective and restores the rotors’ functionality. Or, if the rotors are in good condition, they may be able to be reused with only cleaning and inspection.

It’s important to note that turning the rotors may not always be possible or safe. It is best to consult a professional mechanic or refer to the vehicle manufacturer’s guidelines for advice. In conclusion, every option has its own benefits, so it’s critical to make an informed decision based on safety considerations.


It’s clear that slotted and drilled rotors can be turned in March, due to their design and function. They offer improved cooling and better performance, so car-lovers love them. However, turning these rotors isn’t always advisable.

Before considering turning them, you need to consider a few details. Firstly, you have to check the thickness of the rotor. If it’s already at its minimum thickness, turning might not be a good idea, as it could be dangerous.

You should also look at the condition of the slots or drilled holes. If they’re worn or damaged, turning won’t bring back their benefits. In such cases, you’d be better off replacing the rotors.

Remember: Regular maintenance and inspection of your vehicle’s brakes is key for optimal performance and safety.

Frequently Asked Questions

Question: Can slotted and drilled rotors be turned?

Answer: Yes, slotted and drilled rotors can be turned under specific conditions. However, it is important to note that not all slotted and drilled rotors are suitable for turning. Consult your mechanic or refer to the manufacturer’s guidelines to determine if your specific rotors can be turned.

Question: What are the benefits of turning slotted and drilled rotors?

Answer: Turning slotted and drilled rotors can help to restore their smoothness and improve braking performance. It removes any imperfections or uneven wear on the rotor surface, allowing for better contact between the brake pads and the rotor. This can result in improved stopping power and reduced brake noise.

Question: Are there any risks associated with turning slotted and drilled rotors?

Answer: Yes, there are potential risks when turning slotted and drilled rotors. The process of turning involves removing a small amount of the rotor’s material, which can reduce its overall thickness. If the rotor becomes too thin after turning, it may compromise its structural integrity and performance. It is essential to follow proper guidelines and consult a professional to minimize any risks.

Question: How can I determine if my slotted and drilled rotors are suitable for turning?

Answer: To determine if your slotted and drilled rotors can be turned, you should consult your vehicle’s manufacturer guidelines or seek advice from a qualified mechanic. These guidelines will specify the minimum allowable thickness for turning the rotors and any other relevant information specific to your vehicle model.

Question: How often should slotted and drilled rotors be turned?

Answer: The frequency of turning your slotted and drilled rotors depends on various factors, including your driving habits, vehicle weight, and rotor condition. As a general guideline, it is recommended to inspect your rotors during regular brake maintenance and turn them if necessary to maintain optimal performance. Your mechanic can help determine the appropriate interval based on your specific vehicle and usage.

Question: Are there any alternatives to turning slotted and drilled rotors?

Answer: If your slotted and drilled rotors are beyond the recommended thickness for turning or if you prefer not to turn them, you have the option to replace them with new rotors. This ensures the rotor’s integrity and performance are not compromised. Discuss with your mechanic to determine the best course of action based on your specific needs.