What parts would i need; Rotors, pads, carriers and thats it? Would i need any new hardware or will everything bolt up on the stock parts?

my car has 16" rims... stock sport package rims.

also... my car came with slotted rotors, how can i check if it actually already has the upgrade?

thanks

 

If it has the kit already, you'll know it because you'll barely be able to fit a stick of gum between the caliper and your 16" wheel. The A8 rotor is 12.3" diameter, and the OEM rotor is 11.3".

You need A4 pads (get some higher-performance, but not track, pads - I use Hawk ceramics on my car), A8 rotors, and TT carriers. The kits are inexpensive enough through PureMS and ECS Tuning that you're probably better off just buying that way unless you have access to a salvage yard with a lot of Audis to pull parts off of.

 

how does bigger rotors but same size pads increase stopping power? it would seem that the contact area is still the same if the pads aren't bigger.... just wondering.

 

The larger diameter of the rotor allows more stopping "torque," if you will. The caliper is pushed up to allow for the larger rotor. Think of it this way: a bolt is stuck, so you get a longer breaker bar to wrench it loose. The longer bar gives you more leverage, or torque. If you used a shorter bar, you would have to exert more force to break the bolt loose.

In addition, the added mass of the rotor will more quickly dissipate heat.

 

Yep, the torque arm effect is the biggest contributor to increased stopping power - and this kit is very noticeably better than OEM A4 brakes.

 

ok, thanks... i was just wondering how it increased stopping. so those parts will bolt on using stock A4 hardware? And just to make sure... I would still get A4 pads after the upgrade?

 

Correct on both counts - the stock hardware is reused and since you're not replacing the calipers (only the caliper carriers), you use A4 pads. Take the opportunity to get aftermarket pads - the upgrade is worth it.