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marcindy's avatar
marcindy
Explorer
May 06, 2015

Springs or Bags

I know this has been reviewed before, I have read through the comparisons between adding air bags vs adding springs. I'm hoping to get some advise here.
We just picked up a 2015 2500 GMC denali duramax along with a Open Range 308BHS, hitch is Equalizer 4 point 14k. We mostly dry camp, so I have 3 Trojan T1275 batteries, 80lbs or so each. I haven't gotten a chance to scale it yet, I moved the bars up one notch from how the dealer installed it, and now the truck sits level (within 1/4") front to back- the back drops 3", front is almost unchanged. For now, I estimate tongue weight is 1200lbs.

The back end squats more than I thought, and thinking of either installing air bags, or adding a spring. I have read mixed reviews on both. I'm hoping to hear from folks with either experience, and what brand/product used (like firestone, etc) pros/cons.

I'm in no hurry as it tows "ok". I'm leaning toward adding a spring, but open. Mostly concerned with ride quality.

Thanks

19 Replies

  • How about this thought. Bags are adjustable, springs and timbrens are not. :h

    i have had my last F250s bagged and would lot be without them.
  • I'm going to go out on a limb here and say you don't need them or any other type of suspension mod. Although my 2500HD is older than yours I'm running around 1400# tongue weight, truck sits perfectly level.
    Adding a spring will kill the ride and leave the truck sitting higher in the back unloaded.
    If the truck sits level when hitched up (like its supposed to) and it tows fine I'd leave it, unless your looking at hauling a golf cart or something heavy in the bed. Otherwise a 1200# 'properly distributed' hitch weight is nothing on a 2500HD.

    My two cents.
  • Firestones are a great choice, but I've seen a lot of people recommend Timbrens. They apparently combine the benefits of airbags (softer ride) with the benefits of the add-a-leaf (no need for adjustment). Search Timbrens and see if that would solve your problems.
  • While the experience was on my prior Silverado 1500, I am a fan of the Timbrens. Low cost, no maintenance, easy installation. If (when!) we move to a bigger trailer, if extra "support" is needed, I'll consider a set for my 3500HD.
  • I have used airbags for my tow vehicle for years. It really does help.
  • Does Torklift have Stableloads available for your truck yet? There are two versions.
  • With a travel trailer, a correctly set weight distributing hitch should let you level the truck and trailer without bags or helper springs.

    Ken
  • I've had Firestone bags on 3 gmc trucks now and won't tow without. No slamming on the rear overloads/ bump stops as you go over large dips. More of an air cushion effect. I think it is telling that manufacturers are moving to full air on some models. An extra spring will work but zero adjustment.