alright, i have to replace my rotors and i was thinking of getting some drilled ones. Say i were to get some that are bigger than stock, would this mean i would have to replace my calipers or anything else as well?

 

You would need to replace at the least your caliper carriers so that the calipers can bolt up to the new rotor diameter.

 

u will need different carriers at least cause larger rotors wont fit

 

remember though bigger rotors add rolling weight and increase inner wheel inertia.... a trade off for a little more stopping power. If you think you need the power and have the hp/weight reduction in wheels to counter it, then i say go for the bigger ones, otherwise you'll see better results with x-drilled or slotted rotors and stainless steel lines. I put Zimmerman x-drilled and SS lines on mine, biggest diff i ever noticed was from the steel lines; there's no play in the pedal feel and the brakes are "there" EVERY time from minimal-zero line expansion and they never fade unless i'm on the track.

 

Unless you are tracking your car, I wouldn't suggest drilled or slotted rotors.

 

The A8 brake kit is popular... 1" bigger than stock -- uses 312mm rotors. Places like ecstuning sells the kit... or you can buy rotors for a 1999 Audi A8 4.2Q, and track down caliper carriers for an Audi TT. That's what I did.