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Seantsm2001
We have a 4200 and tow with a Ram 3500 and BW Companion hitch. Prior to the Ram, I towed with a 2015 F350 with Reese Elite. Both tow without excitement! I'm sure a GM 3500 would also do the job.
What would I change.... hmmm! I'll start with what the options I'm glad we have. Double pane windows and residential refrigerator! We had a 4100 that did not have either and I appreciate the difference. Could be all in my mind, but outside noise seems to be less with the double pane windows, not to mention helping with summer cooling. We also chose the yeti package... haven't needed the tank warmers yet, but they are there if we need them. I would also highly recommend going with 3 AC units. These RVs are large units to cool and it's nice to have the extra capacity; especially during the summer months. (We discovered this camping near Destin, Fl last July... can you say HOT!!) Make sure the ACs are ducted with each other. We also opted for the all vent fans to be fantastic fans with remote switches... more of a preference than a necessity, but they move a lot of air. We added stackable washer/dryer. Don't use a lot, but it's nice when you need them. (Note:if you opt for washer/dryer, I highly recommend a "vented" dryer. I've had both and would not ever consider a non-vented dryer again) Final piece we added was roof mounted satellite (Direct TV). Again, not necessary, but nice to have.
I'm not sure you will need to change the tires, unless you really want to. Our 4100 came with the infamous TowMax and I immediately replaced them with Michelin XP Rib. Our 4200 came with Sailun and they have proven themselves (to me) over the last 5000 miles. I believe Heartland has stopped using TowMax, but you will definitely need to verify (TowMax=insurance claim).
There are some nit picky things that I would change, but I'm in the process of making these changes myself. I suppose it's all part of making it "yours". Examples.... I've labeled the dump tank valves for easy identification. I've taken down the basement walls and "tidied"up the cable management. I would also recommend roof covers for your fans; makes using the fans less exciting in the wind and rain. The most recent change was I had MorRyde change the suspension to a more "beefy" version and I also had disc brakes installed. While neither are absolutely necessary, in my very humble opinion, these additions should be considered... especially the disc brakes. These trailers are very heavy and stopping them at highway speeds is a priority (or at least should be). There is
NO comparison between the factory electric drum brakes and the disc brakes (especially when mountain towing).
Overall, we've had great experiences with both our 4100 and 4200. There are always folks that have a "less" than positive experience. Our dealer has been great as well as Heartland's customer service. This user forum is another strong support community and it's be fabulous. I also visited the factory where Heartland builds their toyhaulers. I was actually apprehensive at first because I was worried I would see a "crappy" job. It was very much the opposite!
Good Luck,
Jay