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One of the most popular topics for discussion for S2 owners is the braking system.
The braking system on the Audi S2 is often criticised for underperforming.
Largely this criticism is unjustifed since in the vast majority of cases the brakes
on the car in question will require some work to return it to the Audi specification.
The standard brakes are perfectly adequate for standard street driving if they are
Certainly higher spec pads and discs will help if the performance is being used often.
If you are planning to use the car on a track at all, the standard braking system will not be
up to the job.
There are many options available if you wish to upgrade the brakes and I hope to cover some of them here in the future.
A general illustration of the braking system layout can be seen here
Description of Parts follows
Part number: 895 615 301 D (front)
A vented disc for the front of the car with a diameter of 276mm and a thickness of 25mm overall. Maximum wear limit allowed is 2mm.
Part number: 895 615 601 A (rear)
Rear discs are somewhat smaller and have a 245mm diameter. They are also solid discs, unlike the front which are vented, with a thickness of just 10mm. Minimum thickness prior to replacement is 8mm
Part Number: 895 615 123 A (left) 895 615 124 A (right) 447 615 125 (pad carrier housing)The front calipers are made by Lucas Girling and are commonly referred to by the Girling part number G60. These are in two parts. The main caliper housing has twin pistons (44mm and 36mm) to help improve stopping power. The other half of the caliper holds the pads and is often referred to as the pad carrier. This is bolted to the rear of the wheel bearing housing. The two parts of the caliper are linked together via the guide pins on the pad carrier and the guide pin bolts which pass through the main piston housing and lock into the guide pin threads with locking compound.
Part Number: 895 698 151 (front) 4A0 698 451 (rear)There are a huge range of brake pads to choose from and I would never attempt to cover every available pad here. The price of pads varies according to the type and quality of pads. For general driving use I prefer either Lucas pads or Textar. The Textar pads have the added advantage of giving off very little dust. It should be noted that when buying aftermarket pads, you are unlikely to receive guide pin bolts as part of the kit. These should be obtained seperately from your local dealer.