Olivier-
Ahhh yes the Carrera 3.0. Great car! To quasi-answer your question: Yes, you can get the nuts off without even removing the wheels (I have done it before). It is a complete pain. You need a 1/4" ratchet, and a couple LONG extensions. It takes quite a bit longer, as you are going completely by feel alone. The right side is a bit more of a pain due to the charcoal canister being in the way (have to remove it first). The easiest way would be to do each side at a time. Jacking up the car, removing the wheel, and removing the fasteners. That 1/4" ratchet w/ extensions will come in handy for that method as well. Also, if your friend is not so equipped, you will want to bring a set of screwdrivers, and a flashlight. Have fun!
