Originally Posted by Baloo588
I have to disagree with DOC that the A8L has to have XL tires. My rep at tirerack says while XL is standard its not a must to have as long as the load rating is close to stock. I have 120k miles on my 2012 Audi A8L (drive 25k miles a year highway) and I have bought many tires from tirerack without original XL load and had no issues.
ON paper, a "standard load" tire is safe to use as long as you keep a close eye on your pressures. Difficulty is on the installation side when most shops will afraid to install the non XL tire. Depending on road conditions, a non XL tire is also more vulnerable to pothole / road hazard damage.
Given that "the internet is forever", I tend to encourage use of the XL tire for the reasons mentioned above.