They're factory on some Rangers, more usually found on Explorers. They are generally figured to wander more, as it is a weaker spring and yes, more prone to wrap. However, it will give a smoother ride.
But as for towing, you want to get rid of at least some of that smoothness (and wandering) and keep the rear axle planted firmly where it's at.
The trac/panhard bar or Watts linkage will eliminate nearly all side to side motion. Very nice for towing. Heavier loads do push these things around. Although, I've never ran the fiberglass leafs, but generally people come along complaining of their "squishyness" and want swap in a traditional steel pack. Also hence the airbag recommendation, to help with a trailer.
I see your point here, I'll research my options.
Tongue weight is sometimes figured as a percentage of the trailer weight. I've heard 8-10% But there's really much more to it.
Yeah my comment was more towards I dont have a trailer yet to figure it out so I havent put a whole ton of thought into it.
The farther the trailers wheels are from the pivot point (hitch) the less sway you'll have. But you can't make it too far because then you have to load the trailer weird, and tongue weights go up reallly fast.
Try to have the center of mass/gravity/etc just a few feet in front of the trailer axles. This will also help it track straighter. And will also add necessary tongue weight.
Since you might be getting close to 7,000 lbs (mud, water, snow, gear, etc) 500-600 tongue weight might not be a bad goal to shoot for, especially with a weight distributing hitch.
My 6200lbs figure was based on additional mud, water, fuel etc. Although gear will be kept in the bed.
Try to get a trailer that will fit the cherokee well since that will be the primary load. And it's not like axles can't be relocated on a trailer. Maybe try planning on loading it backwards, get the COG and axles just a little bit farther back.
I have thought about switching it around backwards for this reason.
Trailer tires do have stiffer sidewalls, and likely will track better. Some say LT tires are fine, I can't actually say yet. I've just replaced my trailer tires with XL load rated 235/75R15's (2,200 lbs per tire, 3,500 lb axles), but I have not towed anything substantial, yet. Supposedly they'll sway more, but again, there's a lot of factors.
And who says 4 bangers can't tow?
I'm trying to keep it legal, nobody will give a 4cyl the go ahead to tow my XJ lol.
(The red trailer is what I just replaced the tires on)
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