Typical tandem axle with 5-bolt rims is max rated at 7K lbs, more often 6K lbs(using 3000 lb axles). Your trailer being rated at 5K, constructed of steel would place its weight circa 1000 lbs. To know more precisely would require a scale or a call to the trailer manufacturer. Curious to know why the trailer weight is important to know? Some folks its the tow vehicle capacity, others its the licensed weight their tow vehicle is plated for. For the most part, no one seems to notice the recreational folks. Slap a DOT tag on your door and people will notice if something doesn't look right.