FAQ - What are the advantages of a larger rotor and which one should I choose?

As big as possible, as small as necessary!

In general the majority of bikers benefit most form large rotors. This is because with the same amount of hand pressure a rotor with a diameter of 203 mm will produce around 10 % more braking power than a rotor with a diameter of 180 mm. A 220 mm rotor will produce around 20% more braking power. A larger diameter spares handstrength, prevents brake fading and brings more security. Large rotors are a must for heavier riders. Always consider the total weight of the rider, bike and pack. A fully loaded rucksack can increase the demands on the braking system.

However large rotors are not always the best option for all riders. If a brake is too powerful for the rider the ability to measure and control braking is reduced. The brake can then brake too hard which can lead to blockages and loss of control.

Futhermore large rotors combined with a low rider weight generally produces longer breaking times. It can be impossible for riders weighing under 70 kg to effectively brake with a rotor diamater larger than 180 mm. When the braking system is unable to break correctly the rotor cannot perform optimally which leads to increased wear. A large rotor diameter can also lead to increased noise. This is because the braking system cannot heat up enough to allow the brake pads to brake freely.

If you have any questions regarding optimal set up please contact your magura dealer, our event team or our social media chat.

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