Yes, it's always a good idea to tow, but you didn't say whether you want to tow a car or tow an RV. I'm assuming you want to tow a car. If so, you need to check with the car manufacturer to find out how much your Nissan weighs and also whether it can be towed with wheels on the ground or if you must use a dolly. Not all cars can be towed wheels down. That information will help you to decide what type and size of RV to purchase. This is very important because RVs have tow weight limits, so you want to make sure that whatever you buy can handle the weight of the car. Conversely, if you are talking about towing an RV with your car, you'll still need to match RV weight with tow vehicle weight. This is extremely important because if the weights don't match, you could damage your equipment.