i might be wrong here, so someone will no doubt confirm, but i thought genuine Audi wheels are the wrong PCD for the leon?

Leons are 5x100 whereas audi are 5 x 112?
 
Your right with the PCD Pabs but i heard the TT alloys will fit but not the RS4 ones which look exactly the same.

Think there are two different part no's to differentiate.
 
using a 2001 as a a guess

8N0 601 025 L 1H7 = 11/00-01/02

8N0 601 025 S 1H7 = 02/02>>

dont ask me the difference as the pictures suck but both listed as 8x18 et33 and 5/100

part number will be in the centre if you have access to that one in the pic
 
This help? Think number 3 is the one you want.

audi.jpg