What is the difference between 160mm and 180mm rotors?

What is the difference between 160mm and 180mm rotors?

1. 180mm rotors offer greater stopping power than 160mm ones and are better for larger riders and harsh descents. 160mm rotors are lighter, provide better modulation and work just fine for small riders and bikes that won’t be used for downhill.

Are all 160mm rotors the same?

Yes, the 6 bolt rotors have the same bolt pattern. You will find some slight differences in the actual contact area – if you currently use hayes pretty much any should be fine except possibly the Shimano stuff as it was a slightly smaller contact area.

Do I need 160mm rotors?

Sram’s road product manager, Brad Menna, agrees: ‘We recommend 160mm for road applications. That’s what provides the most power and best system performance for the widest range of riders and uses. ‘ Shimano’s Ben Hillsdon also agrees, and explains why 160mm rotors might be better able to cope in certain situations.

Are bigger brake rotors better?

Simply put a bigger rotor provided better braking, and a four pot caliper provides better braking – better meaning more, and more control (Everything else being equal). For the same force between the disc and pads, a bigger rotor generates more torque on the wheel – i.e. more stopping force.

Are all disc rotors interchangeable?

Generally, disk brake rotors of same diameter are thought of as cross-compatible, but there are some edge cases when this might not be true: Rotor thickness might not be the same across manufacturers and disk brake calipers might be designed with thicker/thinner rotor in mind.

How do I know what size rotor I need?

Call your local OEM dealer and ask for the original rotor sizes or OEM rotor/pads part numbers based on your vehicle’s VIN number (VIN# is referenced in your ownership papers). The dealership may not tell you the rotor size, but they will give you the genuine part numbers for your vehicle.

What tool measures rotor thickness?

micrometer
This micrometer is used for precisely measuring thickness of brake rotor surfaces.

Are Shimano disc brake rotors interchangeable?

Examples: Shimano SM-RT56 is compatible with resin pads only (literally written on the rotor) while SM-RT64 can work with both resin and metal pads. More exotic rotors might also require a matching set of pads.

What size brake rotors do I need for my bike?

Typically smaller rotors like 140mm are reserved for road and cyclocross while larger rotors are designed for mountain biking. Generally, the larger the rotor, the more braking power a rider will have. Also, larger rotors can dissipate heat over a larger surface area.

What is the advantage of a larger rotor on the rear?

The larger rotor can make it easier to lock the rear wheel (which is less of a problem on the front due to the way weight shifts under braking), which is less effective for actually slowing down and destroys trails. I agree with @whyamihere – I run 180mm on the front and 160mm on the back of my hardtail and have never failed to stop yet.

What size rotors do you recommend for Canyon?

Shimano recommends 140mm rotors, as mentioned in road.cc’s review http://road.cc/content/review/217032-canyon-aeroad-cf-slx-disc-80-di2 Why do I want to switch to smaller, less powerful rotors? It’s quite simple, my Canyon is essentially my dream bike, so the aesthetics are very important and I think 140mm rotors look much better.

What are the different types of rotors?

There are two types of rotors out there: 6-bolt rotors and centerlock rotors. 6-bolt rotors simply use 6-bolts to mount the rotor to the wheel while centerlock rotors slide onto a splined area and use a lock ring similar to what a cassette uses.

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