How do I know what size mountain bike rotor I need?
Rotor size is measured by diameter, ie. edge to edge through the centre. The size may also be etched on to the rotor which would be more accurate than measuring yourself. There are a number of common IS (International Standard) sizes of rotor from 140mm through to 203mm.
How do I know what size brake rotors 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.
How do I know my bike rotor size?
HOW TO MEASURE A BRAKE DISC
- ID = Inside Diameter: Measure from inside edge to inside edge.
- OD = Outside Diameter: Measure from outside edge to outside edge.
- Measurement from inside edge of mounting hole to inside edge of bolt hole.
- Bolt hole diameter: measure from inside edge of bolt hole to opposite inside edge.
Are all mountain bike rotors the same?
Rotors come in 140mm, 160mm 180mm and 203mm sizes, and depending on the category of bike you’re riding, it will be set up for a different-sized discs: the front rotor will usually be a size up from the rear.
Can I change my rotor size?
Only the Adapter changes. You must check your fork manufacturer for the maximum size of rotor the fork can be safely operated with. Also check frame clearances (at the rear) for enough clearance for the size of rotor you are selecting. Going up rotor sizes is specifically for more braking power.
Are mountain bike rotors universal?
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.
Do bigger MTB rotors stop better?
The larger rotors not only provide more power but they also put less strain on your forearms and shoulders since you don’t need to pull the brakes as hard, keeping you fresher for longer and allowing you to ride more actively.
Can I put bigger rotors on my bike?
Yes, but there isn’t much in it at all. SRAM and Shimano both claim a weight gain of just 20g per rotor when switching from a 140 to a 160mm size, and if your frame is designed to take 160mm rotors natively, you can throw away the adaptor that many setups use.
Do bigger rotors stop better MTB?
Do bigger rotors make a difference?
Can I use any rotor with disc brakes MTB?
Simply, no. Disc brake calipers require specific mounting points on the fork and frame, while the wheels need specific hubs onto which the rotor can be installed.
Can I use any rotors with Shimano brakes?
All shimano calipers and rotors are cross compatible. There is actually only very few brand rotors on the market that dont work with shimano.
Do I need a bigger rotor?
Increasing The Size Of Your Rotors Improves Heat Dissipation The biggest benefit of increasing the size of your rotors is improved heat dissipation. When you use your brake rotors and pads hard (for example, at the track), they heat up faster. As a result, these parts will have a hard time cooling down.