Are Kool-Stop disc brake pads rotor friendly?

Print Your Disc Brake Pad Template Accurately

20/11/2012

Rating: 4.03 (13245 votes)

When it comes to vehicle maintenance, ensuring your braking system is in perfect working order is paramount for your safety and the safety of others on the road. Disc brake pads, though seemingly small components, play a critical role in stopping your vehicle effectively. Identifying the correct replacement pads can sometimes be a challenge, especially with the vast array of shapes and sizes available on the market. This is where a life-size template can become an invaluable tool, helping you to confidently match your existing pads and avoid costly errors.

Are Kool-Stop disc brake pads rotor friendly?
The term semi metallic can also be used. We have found during testing that our disc pads are Rotor Friendly and provide high performance braking throughout the life of the pad. Kool-Stop sintered metal disc brake pads are designed to give your bike performance braking in extreme conditions, e.g. XC, downhill, trials and dual slalom riding.

You might be wondering why you'd need to print a template for something as straightforward as a brake pad. The reality is, while many pads look similar at first glance, subtle differences in their dimensions, mounting holes, or overall shape can render them incompatible with your specific brake calliper. Relying solely on visual memory or rough measurements can lead to purchasing the wrong part, resulting in wasted time, money, and potentially compromising your vehicle's braking performance. A precisely scaled template, such as the available life-size drawing for 'Disc 35', offers a definitive visual comparison, ensuring you get the exact match needed for optimal braking.

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The Advantage of a Life-Size Template

In the world of automotive parts, precision is key. Brake pads are no exception. Manufacturers produce pads in hundreds, if not thousands, of variations, each designed to fit a particular calliper and vehicle model. Without a clear identification, distinguishing between similar-looking pads can be a guessing game. This is where a downloadable, life-size template proves its worth. By printing out the template, you can physically compare your existing brake pad against the drawing. This direct visual match eliminates guesswork, providing a level of certainty that simple measurements often cannot.

For instance, the 'Disc 35' template is designed to help you verify if this specific model is the correct fit for your brakes. It’s a practical solution, particularly for those who might not have access to vehicle-specific part databases or are dealing with aftermarket brake systems where standard look-ups might not be as straightforward. The template allows for a quick, accurate assessment right in your garage or workshop, empowering you to make an informed decision before committing to a purchase.

Printing Your Brake Pad Template: Step-by-Step Guide

Getting an accurate print of your brake pad template is crucial for its utility. The instructions often specify the required paper size and, critically, the print scale. For the 'Disc 35' template, it's provided as a 2 MB PDF file, designed for A5 paper but conveniently printable on larger formats like A4 and US Letter. The most vital instruction to remember is to 'Print at 100% size. Do not scale the print out.' Failing to adhere to this will result in an inaccurate template, defeating its purpose.

Choosing the Right Paper Size and Printer Settings:

While the template is sized for A5, most home and office printers are set up for A4 (in the UK and Europe) or US Letter (in North America). Here’s how to ensure a correct print:

  1. Download the PDF: First, download the 'Disc 35' PDF file to your computer.
  2. Open with a PDF Reader: Use a dedicated PDF reader application (like Adobe Acrobat Reader) rather than a web browser's built-in PDF viewer. This often gives you more control over print settings.
  3. Access Print Settings: Go to 'File' > 'Print' (or use Ctrl+P/Cmd+P).
  4. Select Your Printer: Choose the printer you intend to use.
  5. Crucial Scale Setting: Look for 'Page Sizing & Handling' or 'Scale' options. Ensure 'Actual Size' or 'Custom Scale: 100%' is selected. DO NOT select 'Fit', 'Shrink Oversized Pages', or any other scaling option. This is the single most important step for accuracy.
  6. Paper Source/Size: If your printer supports A5, you can select it. However, if you're printing on A4 or US Letter, simply select that paper size. The A5 template will print centered on the larger sheet without scaling, which is exactly what you want.
  7. Orientation: Ensure the orientation (portrait or landscape) matches the template's design for optimal use of space, though it typically adjusts automatically with 'Actual Size'.
  8. Print: Once all settings are confirmed, proceed with printing.

After printing, it's a good practice to measure a known dimension on the printout (if one is provided on the template, or even just the overall length/width of the pad outline) with a ruler to double-check that the 100% scale has been maintained. If your measurements match the expected dimensions, your template is ready for use.

Paper Size Comparison for Printing Templates

Paper SizeDimensions (mm)Dimensions (inches)Suitability for A5 Template
A5148 x 2105.8 x 8.3Ideal (Exact Fit)
A4210 x 2978.3 x 11.7Excellent (A5 prints unscaled, centred)
US Letter216 x 2798.5 x 11.0Excellent (A5 prints unscaled, centred)

As you can see, both A4 and US Letter are perfectly suitable for printing an A5 template without any scaling issues, provided you select 'Actual Size' or '100%' in your printer settings.

The Criticality of Correct Pad Fit and Brake System Health

The effort put into accurately identifying your brake pads goes beyond mere convenience; it's fundamental to vehicle safety and performance. Incorrectly sized or shaped brake pads will simply not fit properly into the calliper. This can lead to a host of problems:

  • Compromised Braking Efficiency: A poorly seated pad won't make full contact with the rotor, reducing its ability to generate friction and slow the vehicle. This means longer stopping distances, a major safety hazard.
  • Uneven Pad Wear: If the pad isn't flush, it will wear unevenly, leading to premature replacement and potentially damaging the brake rotor.
  • Noise and Vibration: Misaligned pads can cause annoying squealing, grinding, or pulsating sensations through the brake pedal, indicating improper function.
  • Damage to Brake Components: An ill-fitting pad can put undue stress on the brake calliper, piston, and rotor, leading to more expensive repairs down the line.
  • Complete Brake Failure: In extreme cases, a severely incorrect pad could dislodge or fail completely, resulting in catastrophic brake loss.

Understanding the basic components of your disc brake system helps underscore this importance. The brake calliper houses the pistons, which push the brake pads against the rotor (the disc). When you apply the brakes, the pads clamp down on the spinning rotor, creating friction that slows and stops the wheel. Each part must work in perfect harmony, and the pads are the direct interface responsible for converting kinetic energy into heat, safely bringing your vehicle to a halt. Therefore, ensuring your pads are the correct shape and size is a non-negotiable aspect of brake maintenance.

Beyond the Template: Other Methods for Pad Identification

While a template is a fantastic visual aid, it's often part of a larger strategy for accurate part identification. Here are other reliable methods:

  • Vehicle Information: The most common method is to use your vehicle's make, model, year, and often the engine size or VIN (Vehicle Identification Number). Reputable auto parts suppliers and online catalogues can typically cross-reference this information to find the correct pads.
  • OEM Part Numbers: If you have the original brake pads or their packaging, look for an OEM (Original Equipment Manufacturer) part number. This is the most accurate way to find direct replacements.
  • Aftermarket Part Numbers: Similarly, if previous replacement pads were fitted, they might have aftermarket part numbers stamped on them or their backing plates.
  • Visual Inspection of Existing Pads: Examine your old pads for any stamped numbers or manufacturer logos. Sometimes, even the brand and model series are visible.
  • Physical Measurement: While less reliable for complex shapes, measuring the length, width, and thickness of your existing pads can provide supplementary data. However, be aware that thickness changes with wear, so focus on the overall dimensions of the backing plate.

Combining the template method with one or more of these identification techniques provides the highest level of assurance that you are indeed purchasing the correct brake pads for your vehicle.

Maintaining Your Disc Brakes: Essential Tips

Beyond simply replacing worn pads, comprehensive brake maintenance is crucial for longevity and safety. Here are some key tips:

  • Regular Inspection: Make it a habit to inspect your brake pads regularly, ideally during tyre rotations or at least every 12,000 miles (20,000 km). Look for pad thickness (most vehicles have a minimum thickness specified, typically around 3mm), uneven wear, and any signs of cracking or crumbling.
  • Listen for Warning Signs: Pay attention to any unusual sounds. A high-pitched squeal often indicates worn pads (some have built-in wear indicators that make noise when thin). A grinding sound usually means the pads are completely worn down and the metal backing plate is contacting the rotor, which can cause significant damage.
  • Check Brake Fluid: Periodically check your brake fluid level and condition. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which can reduce its boiling point and lead to a spongy pedal. It should be flushed and replaced according to your vehicle manufacturer's recommendations.
  • Inspect Rotors: While replacing pads, always inspect the brake rotors. Look for deep grooves, scoring, or excessive rust. Rotors have a minimum thickness specification, and if they are too thin or severely damaged, they should be replaced or machined (if within limits) to ensure a smooth, flat surface for the new pads.
  • Lubricate Contact Points: When installing new pads, apply a thin layer of high-temperature brake grease to the calliper pins and the back of the brake pads (where they contact the calliper piston and clips) to prevent squealing and ensure smooth operation. Avoid getting grease on the pad's friction material or the rotor surface.
  • Bed-In New Pads: After installing new pads and rotors, it's essential to 'bed them in'. This process involves a series of moderate stops from varying speeds to properly transfer a layer of pad material onto the rotor surface, optimising braking performance and preventing noise. Follow the specific instructions provided with your new pads.

Common Brake Pad Issues and Potential Causes

IssuePossible Cause(s)Solution
Squealing NoiseWorn pads (wear indicator), glazed pads, improper bedding, lack of lubrication on contact points, cheap pad material.Inspect pads, bed-in new pads, lubricate, replace with quality pads.
Grinding NoisePads completely worn to backing plate, foreign object trapped between pad and rotor.Immediate inspection and replacement of pads and possibly rotors.
Pulsating PedalWarped brake rotors, uneven pad wear, sticky calliper piston.Inspect rotors (measure runout), service calliper, replace components as needed.
Reduced Braking PerformanceWorn pads, contaminated pads, air in brake lines, low brake fluid, faulty calliper.Inspect entire brake system, bleed brakes, replace worn parts.
Uneven Pad WearSticking calliper piston, seized guide pins, warped rotor, incorrect pad fitment.Service calliper, replace guide pins, replace/machine rotor, ensure correct pad fit.

Frequently Asked Questions About Brake Pad Templates and Identification

Here are some common queries regarding brake pad templates and their use:

Q1: Why can't I just measure my old pad with a ruler?

A1: While a ruler can give you basic dimensions (length, width), it's very difficult to accurately measure the precise shape, curvature, and exact placement of mounting holes, especially for complex pad designs. A life-size template provides an exact visual overlay, which is far more reliable for confirming the intricate shape and fit.

Q2: What if my printer doesn't have an A5 paper setting?

A2: No problem! The template is designed to print correctly on larger sheets like A4 (common in the UK) or US Letter paper. Just ensure you select 'Actual Size' or '100%' in your printer's scaling options. The A5 template will simply print smaller and centred on the larger sheet without being stretched or shrunk.

Q3: Can I use this template for any brake pad?

A3: No, this specific 'Disc 35' template is only for verifying the fit of the 'Disc 35' model brake pad. Different brake pads have different shapes and sizes. Always ensure the template you download matches the specific pad model you are trying to identify or purchase.

Q4: How often should I check my brake pads?

A4: It's generally recommended to inspect your brake pads at least once a year or every 12,000 miles (20,000 km), whichever comes first. However, if you notice any changes in braking performance, hear unusual noises, or see a brake warning light, inspect them immediately.

Q5: What if the template doesn't match perfectly, but it's close?

A5: If the template doesn't match perfectly, it's likely not the correct pad. Even minor discrepancies in shape or mounting hole alignment can lead to improper fitment, reduced performance, and potential safety issues. It's always best to find a pad that is an exact match.

In conclusion, taking the time to accurately identify your brake pads, whether through a precise, 100% scale template like the 'Disc 35' or by cross-referencing vehicle data and part numbers, is a crucial step in ensuring your vehicle's braking system remains safe and effective. Don't compromise on safety; get the right fit every time.

If you want to read more articles similar to Print Your Disc Brake Pad Template Accurately, you can visit the Brakes category.

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