News for Brake Disc Skimming
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When to replace brake discs
All modern cars have brake discs. Some can be expensive. When you're advised to replace a set of discs, it's worth asking whether replacement is really necessary, or whether they can be skimmed at a much lower cost, and get more miles out of them. Here are some things to think about.
- Brake discs are considered a throw-away item but they only need replacing when they wear below minimum thickness. This could be anywhere from 15,000 to 100,000 miles depending on driving style and the type of brake pads used.
- If there is a small amount of hub run-out, discs can wear unevenly. Each time the disc rotates, even when you are not touching the brakes, the pads will wear away one part of the disc. This eventually leads to disc thickness variation, which results in 'judder' or vibrations when the brakes are applied. A skim using an on-car brake lathe, correctly adjusted to eliminate run-out, will resolve this.
- Some brake pads are much more aggressive than others. An aggressive pad is one that can produce a lot of dust and often causes uneven wear of the disc surface. This in turn can cause brake vibrations. A brake disc skim will remove this unevenness and any excess dust, and prevent brake vibrations.
- On cross-drilled discs, the holes do not cover the entire disc surface, resulting in varying surface areas across the disc. Sometimes, this can result in disc thickness variation. This problem can be easily and cheaply resolved by having the discs skimmed whilst on the car.
- New brake pads used on a partially worn disc will require bedding in, which can take 500 to 1000 miles and brake performance will be poor and noisy during this time. A skim of the disc surface of 0.1mm will solve this problem immediately.
Before replacing brake discs look at the condition of the discs and check to see if they can be salvaged, especially by machining the discs directly on the car.
Discs on a Jaguar XKR resolved
Full Circle Services in High Wycombe recently solved brake disc problems being experienced on a Jaguar XKR with their Pro-Cut brake lathe.
The very satisfied customer commented that; “The result was unbelievable. The whole experience from Full Circle along with the Pro-Cut machine just took all the worries away at a reasonable price.”
The Sunday Times recommend Skim my Discs
Why drivers love brake disc skimming
After a Pro-Cut brake disc skim, drivers report:
- Improved braking performance
- Brake vibration problems have been resolved
- No bedding in required
Brake disc skimming is quick, efficient and has amazing accuracy.
To find your nearest garage with a Pro-Cut on-car brake lathe machine, please go to “Your Nearest Service Centre” page and just enter your postcode.
PRO-CUT TO THE RESCUE OF CAR SOS!
Well-known TV mechanic Fuzz Townshend and TV host Tim Shaw use the Pro-Cut on-car brake lathe on a Mazda RX7 in the last episode in the series of National Geographic’s Car SOS.
In the most recent episode of Car SOS Fuzz and the team restore a modified and tuned 1992 Mazda RX7 with the front end missing, accident damage, an unusual engine and a host of other faults back to its former glory.
Fuzz asked Pro-Cut to bring their brake lathe to his workshop to resurface all 4 brake discs and bring them back to life. Essential as the car had not been driven for some time and the discs were heavily corroded. Resurfacing is a cheaper option than replacing discs and more importantly it also ensures perfect alignment and no possibility of run-out leading to brake vibrations.
Fuzz points out that; “This (the Pro-Cut on car brake lathe) is actually making this disc bespoke to this car, absolutely perfect for it.”
After filming, blagging petrol head Tim Shaw commented; “We could use that machine all the time – you should give us one.” Priceless!
Over the years Pro-Cut has established a network of garages who use its equipment. Pro-Cut’s ‘Skim My Discs’ website shows drivers where they can find such workshops. The site delivers free advertising for garages using a Pro-Cut brake lathe, and they have seen a distinct increase in business from customers seeking solutions to vibration and other brake problems.
Pro-Cut is Europe’s leading specialist in offering solutions to vibration, braking and wheel balancing issues. For more information contact Pro-Cut on 01752 219124