BENDIX ANSWERS: WHICH DISC BRAKE ROTOR IS BEST?

Just as there are many different types of brake pads available, so too is there a wide choice of disc brake rotors

Bendix explains that some rotors offer better stopping performance, other styles are more durable, and certain types claim to provide both.

The company presents the following overview of the various types available, and what it says are the pros and cons of each.

Smooth/plain rotors

These are the most commonly fitted rotors to passenger cars. They are typically made of cast iron, can tolerate an average amount of heat, and generally perform reliably in day to day driving conditions. Smooth rotors will not cope well with spirited driving or for towing heavy caravans or trailers, particularly on undulating roads where heavy braking might be needed. These conditions generate a lot of heat which the smooth rotors have difficulties in efficiently dissipating. On the plus side, their smooth finish has the advantage of delivering a longer pad life.

Drilled rotors

Drilled rotors feature a series of holes on the surface which allows heat created by pad friction to dissipate more effectively to improve braking performance and consistency. A negative aspect of drilled rotors is reduced structural integrity, which may cause them to eventually crack in demanding applications. This style of rotor will also lead to increased pad wear, owing to the greater friction the drilled surface provides against the pad.

Slotted rotors

Drilled and slotted rotors

A combination of the previous two rotor types, providing the same benefits: improved dissipation of heat, gases, dust and water, resulting in a cooler and cleaner braking surface that boosts braking performance. These rotors are ideal for performance vehicles that regularly brake hard at speed, but provide reduced brake pad and rotor life.

The Bendix rotor range

Bendix says it offers a range of proven and reliable disc brake rotor replacements and upgrades to suit a variety of vehicle categories.

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Rather than having drilled holes, slotted rotors feature grooves that run along the surface of the rotor. In heavy braking conditions, these help to remove glaze from overheated brake pads while also allowing dust to escape. The structural integrity of the rotor is also somewhat affected by the slots, but not to the same extent as the drilled rotors, meaning they will better resist cracks. On the downside, slotted rotors will also reduce brake pad life.

It says its Euro+ Disc Brake Rotor is a plain style ‘Original Equipment Fit’ rotor that meets or exceeds OE specifications, making it an ideal direct OE replacement part that delivers strong braking performance in a variety of conditions. High carbon metallurgy also ensures reliability and longevity in the Euro+ Disc Brake Rotor, while SwiftFit coating provides more efficient fitment for installers as rotor pre-cleaning is not required, says Bendix. For greater braking performance in sports cars, Bendix says it offers its Ultimate Sports and Performance Disc Rotor. Bendix’s take on drilled and slotted rotors, this range features specially designed slots and V-shaped dimples to efficiently expel gas, dirt and water.

This balanced pattern has evolved from racing and provides outstanding stopping power and minimum brake fade. The use of dimples rather than drilled holes ensures these rotors achieve their braking performance while retaining the strength of a solid rotor, says Bendix.

Coming soon – Ultimate 4WD Sports and Performance Rotors

Bendix will also shortly take the covers of an exciting new range of sports and performance disc brake rotors for four-wheel drives. These rotors feature metallurgy specially designed for off road vehicles while also introducing Bendix’s proven slot and dimple technology to significantly increase braking performance over the OE equivalent. Bendix says full details will be shared soon. For more information, visit www.bendix.com.au