Widest tire
 

What is the widest tire anyone is running on an A6? I was thinking of going with a 265/40/19. Anyone think I will have a problem with that size? Thanks for any input.

That tire will be slightly larger diameter thank stock (assuming you have a 255/40-19) you'll have an additional 4mm of sidewall and will probably throw off your speedometer a tad. On the stock suspension it looks like an easy upgrade.

The issue in my opinion is that your wheel probably isn't wide enough to accept that wider tire. I believe a 265 tire should have a 9" wide wheel.

Hope this helps