The 2007 Cadillac STS is relatively heavy. You'll need to find the curb weight (weight of the car without passengers or cargo) in your owner's manual. It's likely to be over 3,500 lbs.
Crucially:
* Check your RV's owner's manual: This will state the maximum towing capacity. This is the absolute maximum weight you should tow. Exceeding this is dangerous and can damage your RV.
* Consider the type of towing: You cannot simply attach a rope or chain. You'll need either a *tow dolly* (supporting only the front or rear wheels) or a *vehicle transport trailer* (supporting all four wheels). A dolly generally has a lower weight capacity than a trailer. The type of towing method also impacts the weight capacity of your RV.
* Braking system: A towed vehicle needs a braking system. This is crucial for safety. Most states require braking systems on towed vehicles above a certain weight. This will likely involve installing a braking system on the Cadillac itself (like a supplemental braking system).
In short, you absolutely must consult your RV's owner's manual for its towing capacity and carefully consider the weight of the Cadillac and the correct towing method before attempting to tow it. Attempting to tow without proper equipment and understanding of weight limits is incredibly dangerous.
