And I am the one that bought a Solitude, I tow with a 3500, but really the difference is only rear springs, tires and the sticker on the door. If you buy a 5th wheel with a GVW of around 15,000 it is hard to stay totally legal. The truck will tow fine, but legal is done on a scale. Example: My truck weighs as follows: 5600 front axle, 4000 rear axle with just me and my normal stuff, a 60 gallon fuel tank and 5500 watt onan quiet diesel generator and 5th wheel hitch. Hooked up to the Solitude loaded, rear axle is between 7000 and 7500, front axle 5600, trailer axles 10,500. Interesting point, rear axle on truck is 500 lbs heavier without fresh water in the 5er, due to the fact that the water tank sits behind the rear axle of the 5er and takes weight off of the pin. I found this out by accident in January when I had to take a trip to CA and found out that my fresh water drain didn't close all the way and let the water drain out. Based on my numbers above, I am over weight, my truck has a gross vehicle weight rating of 11,600, based on my front and rear axles combined, I am at 12,600 to 13,100 on the gross vehicle weight of my truck. Am I worried? Nope, I am withing my tire ratings and the truck drives fine. If needed, I can loose 7-800 lbs easily between the generator and my extra fuel.
With a 2500 truck, your GVW is probably around 10,000, so you have less of a margin. Limit your 5th wheel choices based on pin weight to start and then scale your truck and combo axle by axle.
2017 3500HD CCLB Black on Black LTZ Loaded L5P, Banks Derringer with I dash, Ranch Hand bumper with 18K superwinch talon, Curt 20k puck hitch, 60 gallon aluminum transfer tank with electric pump, Onan Quiet Diesel 5500 for extra weight in the bed, Cooper STT PRO 285/65R18 and Vision Manic wheels. 2nd set of tires and wheels, Cepek Trail Country EXP 285/65R18 on Ultra Predator II Black/Machined 18x9
2018 Solitude 310GK fifth wheel with a 12' Haulmark tag trailer to haul toys in.
1997 Jeep TJ, Currie 8.8 high pinion axles front and rear with ARB air lockers, 4.56, 5 on 5.5 with warn hub kit, Atlas II transfer case with Klune V doubler, 4 inch Currie Lift and 35x12.50x15 Mickey Thompson MTZ on 15x10 Mickey Thompson wheels, Ramsey 9500 winch, hydraulic ram assist steering, on board welder and on board air, custom aluminum fuel tank.