How do I know what size 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.
Does it matter what size rotors you buy?
Yes, rotor size definately matters. But depending on your style of riding, you can may be able to get away with it.
Do all brake rotors fit?
Brake rotors are not fully universal and interchangeable, but they can be considered slightly more versatile than the brake pads that were discussed previously. The components of the replacement brake rotor should also be fitted the same way as the original rotor.
How do I find out what size my brake discs are?
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 front rotors bigger than rear?
Retired Moderator. You’ll find this on most cars. It’s due to physics – when decelerating the weight and energy transfers to the front of the vehicle, as a result front brakes are larger since they have more energy to cope with, and that extra weight also gives the front wheels extra grip and thus more braking ability.
Are front and rear rotors the same size?
The fitment front and rear are going to be extremely different. Not only is the diameter and braking surface completely different sizes, the rear disks have a separate machined area inside the hat (the part where it attaches to the hub) which is used for the parking brake. The front one has no such provision.
Are front rotors the same as back rotors?
Why are front rotors bigger than rear?
The front rotor is bigger because you CAN brake more with the front before losing traction. The rear rotor is smaller because a whole lot of extra braking force is just going to make the wheel lock up anyway, so a bigger rotor would just be a waste.
Are bigger 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.
Do rotors go on the front or back?
For the majority of vehicles with disc brakes at all four wheels, there is no specific designation on which side a rotor must be placed. The rotor that fits the left front will typically fit the right front as well as both sides of the rear axel. There are exceptions of course.
Are rotors in the front or back?
The rotors are the circular discs that are connected to each wheel (two in the front and two in the back). Rotors are designed to turn motion (kinetic energy) into thermal energy (heat). As the calipers squeeze your brake pads together, the rotors’ large surface area creates friction.
How big does a rotor need to be on a car?
These sizes are not interchangeable, and you must get the right one to fit on your car. Particular rotors size may depend on your trim (sub-model), vehicle’s country of origin, sports/performance package, transmission type, engine size, and numerous other options.
When do you need to replace your brake rotors?
When the brake rotors are pitted or have grooves in them, you will need to replace them for consistent braking. Finding what proper size rotors to use is something you should need to know when you replace them. If the rotor has not been worn down too much, you will be able to see the size stamped right on the rotor itself.
How to determine Volvo brake rotor sizes-FCP Euro?
Use our “My Garage” tool to ensure the right size rotor for your vehicle. Two sizes of front brakes were offered for the Volvo 850, S70, V70, & C70. The 302mm upgrade is achieved by installing the appropriate caliper mounting brackets and rotors. Calipers and pads remain the same.
Can a vented rotor be interchangeable with a solid rotor?
Keep in mind, that vented and solid rotor options are not interchangeable in a majority of cases. For example, if your car has a solid rear rotor, you will not be able to fit a vented rotor without first upgrading your calipers.