User Manual and User Guide Link

2008 Nissan Skyline GT-R – Road Test & Review – Automobile Magazine
Japanese automakers are notoriously tightlipped about future products, but the veil of secrecy over the next-generation Nissan Skyline GT-R has been nothing .Naturally, you will want to buy the highest-quality equipment you can find for maximum towing safety. And if you plan to tow often, consider convenience. Quick-disconnect trailer light connectors and ratchet-type tie-downs, for example, make the job go faster and easier and are usually worth the extra small investment. Purchase towing items such as hitches and hitch balls only from your Nissan dealer or a professional supplier of towing equipment. If you are intending to use your vehicle to tow a trailer you already own, you must ensure that your loaded trailer remains well within your vehicle’s towing capacity as specified in the vehicle owner’s manual.

In addition, you should purchase the right type, style, and class* of hitch and towing equipment to properly adapt the trailer to your vehicle [Download] Source: nissanusa.com