You asked in this thread i replied, don't see any patronising going on
https://www.audi-sport.net/xf/threads/wheel-spacers.416493/
You asked on this thread which if you didn't notice is 10 pages long with members discussing spacers and it has pictures of members cars with spacers on, go look I'm not making this stuff up.........
You keep asking about Mag ride and spacers, it doesn't make a difference having mag ride or not, you haven't lowered the car as you said you were happy with the stance in your other thread.
You asked if the 255 and 235 tyres were correct,to which above i posted all the size combo's on the RS3 Sportback and Saloon, yet you still asked if you had the correct tyres on
i couldn't make it any clearer to you could i really ??
If you think sarcasm is someone pointing out facts to you and trying to offer help then you mustn't understand what I'm typing in my replies.
As I've already said and other members above have shown, 8mm on the 255 front is probably about right, 12mm on the 235 front is about right and 12/15mm on the 235 rear is probably about right.
Would i go 12/15mm on the 255 front ? no personally because it's taking the wheel out too far and you are running the risk of increased road grit hitting your paintwork.......
And just in case you missed it
Rs3 8V has either 255 fronts and 235 rears or 235 square.
Mag ride fitted makes no difference to spacers on or off.