Yes 5x112mm
Only if they are from an Audi TT which have the 5x100 bolt pattern ( same as your car ) Other Audi wheels will not fit, as they are usually 5x112 bolt pattern.
5x112 30mm offset
5x112.5 same as Audi
no
The 2004 Audi A6 has a V6 engine.
The 2004 Audi S4 has 40 valves.
The 2004 Audi A6 has 30 valves.
The 2004 Audi S4 has a V8 engine.
The 2004 Audi A4 has 20 valves.
The 2004 Audi A8 has 40 valves.
The 2004 Audi TT has 20 valves.
The 2004 Audi A8 has a V8 engine.