Leaf Spring Replacement

I agree. Not in my opinion.

Thanks Huntindog, for the response. I had wet bolts installed when I bought the trailer, so perhaps that has helped, along with the Equaflex suspension. No sagging at all, just old OE springs with a lot of miles on them. Yes, perhaps the steel was better back in 2009.

As long as they look good with no cracked steel and have a good arc you are good for a long time.
Although anything can happen on the road you should not worry about your springs.

Keep the wet bolts greased regularly, an eye on the arc of the springs, wear on the bushings and shackles. A dry bolt will wear out the nylon or bronze bushing eventually turn in the shackle, elongating the hole then tearing out.

I would think with as many miles as you have on yours and they have good arc, your springs are "proven". I had a spring break with about 30,000 miles on our trailer. It was a right rear spring that broke 4" from the rear-most eye. The axle slid forward and the two tires started rubbing together and incinerating at about 60mph....pretty exciting time there for a few minutes, but I managed to get it off the road before things went catastrophic. That caused me to buy 4 new springs and up the spring capacity from 1750's to 2500's. I noticed two things about my springs; one, there was a very visible flaw in the manufacturing that caused the failure. two, the distance from the eye to the next leaf in the "spring pack" was about 6". On the new springs the distance from the eye is about 2". I like that better. Also, I did a ton of research and calling and as far as I can tell, there are no springs for trailers made in USA. You can have springs made, but it will be about $2000.00. All trailer springs are made in China or India. So I would say....since I think it is a gamble buying anything from China or India, If what you have is working, keep it til it starts to look iffy cause it's hard to be certain you'll get a good set of springs.

My Sunnybrook is a 2004 and is still on its' original springs. I too have wet bolts and Equaflex suspension equalizers. Ours does not get towed anymore though and just sits on those old springs waiting for my wife and I to arrive. :B
Barney

If the springs are basically in good condition, and they are just a bit flat from the years of use, one possibility is to have them re-arched.

MANY years ago, I worked at a truck repair company in Amarillo Texas called Tow Brothers. (NOT a recommendation for them, Hell, I don't even know if they are still in business, this was 36 years ago) They did just about every kind of work on truck and trailer suspensions. One of the things they did was take old tired springs, disassemble them, and re-arch them to factory specs.

As I said, this isn't an endorsement for the company, but a possibility of repair if you need your springs redone. I am sure that there are many places across the U.S. that will do this for a much cheaper price than buying new.

Just a suggestion, your mileage may vary...

I would say not necessary for preventative unless maybe you have a single axle trailer that you load near GVWR often.

One of my 4 (tandem axle) springs broke either at the campsite or on drive home about 200 miles away. I had tire clearance when the suspension dropped so no rubbing. I'm sure the things inside bounces a little more than usual, but I do not have shocks anyway. I changed all 4 with higher spring rates before the next trip as I do load near GVWR every trip.

Springs are cheap from eTrailer.