Feb 1, 2007 · There are only two causes for judder — lateral runout and disc thickness variation on the rotor’s friction surface. What could have caused the lateral runout? The causes of the condition range from lugs that were over or unevenly torqued to …

Feb 28, 2024 · Whenever servicing brake rotors, it's important to take a few measurements. Measure lateral runout, disc thickness and measure for thickness variation. Measure the rotor disc for thickness and compare your findings to the minimum thickness (which should appear on the rear of the rotor hat area).

When it’s time to replace your brake pads or if you’re experiencing braking issues, an option is to resurface your brake rotors. This process shaves a thin layer of the rotor’s mating surface off …

Jan 12, 2015 · First, check for rotor surface runout with the wheel mounted. Components should be marked as you perform an inspection of the assembly. By measuring the rotor on the hub, …

With sufficient material, drum and rotor resurfacing can help to eliminate corrosion, brake pad deposits, and small irregularities to restore used brake rotors and drums to service.

Jun 6, 2013 · The Pro-Cut PFM on-car brake lathe re-faces the disc in-situ and is easy to use for any level of technician. Additionally it is extremely accurate – to 0.05mm – which eliminates any run-out. Speed is also a feature as the tool can machine a disc in less than 9 miniutes.

Why Skim Your Discs? The Pro-Cut process will return your brakes to ex-factory condition. The process matches the disc to the hub. In other words, if there is the slightest run-out in the hub (i.e. it doesn’t rotate in a perfectly true way), the Pro-Cut process will take care of this and correct it by automatically compensating for it.

Jul 9, 2021 · If so I would either purchase new rotors or have your factory rotors turned (cut) by a shop. The measurements are in millimeters and an out of round or improperly cut (i.e. too thin) rotor can cause at the least, lots of vibration in the wheel and van, and at the worst, brake failure.

The Pro-Cut lathe works on the vehicle, by attaching itself directly to the hub. The technology includes an automatic, electronically-controlled gyroscope system, which measures run-out in the hub and corrects for this to an accuracy of 0.05mm.

The cut-out allows the piston to push the brake pad at a desired angle, reducing noise and inducing even pad wear. When installing crescent cut-out directional brake pads, follow the directional arrows on the pads.