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norfla71's avatar
norfla71
Explorer
May 09, 2014

Looking at heavier fiver; need advice on wheel/tire uprades

We're looking at the Jayco Eagle line (Premier or Pinacle, depending on if we want a bunkhouse or more full time floor plan). Regardless, were looking at an additional 3,000+ (just over 15k gross) with tongue being close to what we have now, and anywhere from 6 to 10 feet of additional length (from 32', up to 42'). I have a Ram 3500 SRW, rear axle rated at about 3,500. While legal, it will be pushing the legal limit of our rig. I'm mainly concerned about towing stability and, hence, am asking for advice.

The OEM wheels and tires can handle the load, but am afraid they will be a handful with a trailer that large; truck will be equipped with a Kelderman 2 stage kit, trailer with Mor/ryde from the factory, possibly paired with a Kelderman RV system and a B&W Companion. We will only be pulling from A to B, and will stay at B for an undetermined amount of time; this will only be a couple of times a year for a couple of months total, so not really full time. I'm most worried about errant weather, big rigs and bad drivers creating stability issues. I'm thinking of either upgrading to a set of 19.5 G tires or a full dual; the only issue is we will want to convert back to OEM for non-tow duty, and a dually conversion can get expensive (depending on wheel and bed option). Either way, I'm looking at $4,000 minimum. Considering life and limb, and replacement cost of both truck and trailer, I would say even double that would be a wise investment, just not sure which way to go.

5 Replies

  • I wouldn't hit the panic button yet. I think you may be worrying too much about that weight, but you should look at all of the numbers to be sure. G rated tires probably overkill on the truck, but won't hurt. I wouldn't want to do all that tire changing though. If you want to deal with the size and parking issues of the dually, go for it... but if you can't do that (I couldn't as I need to plow), then consider new Bilstein shocks and Timbren springs or airbags for the truck. I did on my 2011 Chev 3500 long-bed diesel and it made a big difference in stability...same with my Ford 6.0 diesel before that.

    I will add that I tow lots of miles...25000-30000 on the current combination and about the same or more on the Ford with another Carriage. Long trips, mountains etc. Wore out the shackles and suspension on this Carriage...but no truck related issues with the load. Changed my differential fluid before this trip and it was looking good with no evidence of metal or weight related wear issues at 30,000 miles.

    I would be MUCH more worried about the tires on the trailer...lot of tail that could wag your dog there. I would bet they will put Towmaster or similar E rated tires on that rig. If you listen to nothing else anyone says....don't buy that trailer without G rated tires and rims capable of 110 psi. Static weights will likely look ok on paper for a trailer tire in the E range...but dynamic towing weight transfers and other road forces will cause you trouble. Just happened to my friend with his new Keystone Alpine...blew that nice new Towmaster and tore out his sidewall. I had tread separation on my E rated Towmasters. I upgraded. Wish I had insisted at purchase.

    An added bonus of the G rated tires is that they greatly improve the stability of the trailer when towing. E rated are like towing on balloons.


    Just my 2 cents...enjoy the new rig.
  • I tow a 14K 5vr with '07 3500SRW
    Wet pin weight is 2900#

    I am right at ratings......rear axle/stock tires
    But I have 400# of generator & tool box in bed of truck.

    Go with the 19.5 G rated tire. 4500# max load rating per tire (plus---depending on tire brand)
  • donn0128 wrote:
    Why not take the 4K and your truxk and trade for a dually and be done with it.


    x2
  • I recommend the dually. Love mine. Pin weight is 4000 lbs. I do run air bags as well. Keeps it very stable..
  • Why not take the 4K and your truxk and trade for a dually and be done with it.