Trailer weights - Fiberglass RV


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Old 10-24-2010, 07:50 AM   #1
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Trailer weights

I'm looking for a 13' trailer and was wondering if there is a listing of the weights of the various brands. thanks.

Rich Morrison
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Old 10-24-2010, 07:57 AM   #2
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Rich, you can find some weights here in the archived Oregon Gathering thread: Trailer Weighing at The Oregon Gathering

That said, we have found no TWO trailers weigh the same. A lot has to do with owner mods and definitely with owner camping styles... how much "stuff" one wishes to take camping. You need to remember, it isn't how much a trailer weighs empty (who camps with an empty trailer?), but how much a trailer weighs when loaded to go!

We may be able to help you get a better general idea if you tell us what your tug is and its tow capacity.
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Old 10-24-2010, 08:36 AM   #3
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Thanks Donna. I have a 1985 Toyota Camry with a tow rating of 1500 lbs. The car has 68000 miles and is in excellent condition. I plan to install electric brakes if the trailer doesn't already have them. I will install a transmission cooler and proportional brake controller. Rich
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Old 10-24-2010, 10:05 AM   #4
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Rich, unless someone else jumps in, you may want to get in touch with Des Nolan. Des tows a Boler with a Camry. He's an active member here and has this recent topic going: Carrying a canoe while towing a trailer; recommendations?
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Old 10-24-2010, 12:27 PM   #5
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Cool weight spreadsheet

Quote:
Originally Posted by Donna D. View Post
Rich, you can find some weights here in the archived Oregon Gathering thread: Trailer Weighing at The Oregon Gathering
I suggest looking at Trailer Weights in the Real World

This thread has excel spreadsheet data translated to this website's display.
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Old 11-01-2010, 01:33 PM   #6
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Rich, my car is a Toyota as well, and carries a similar rating (1,600 pounds). I tow a 13' Scamp with it. My trailer weighs just about 1,200 pounds empty (with full propane tank). That is without a battery onboard. My wife and I carry about 200 pounds of gear with us... so it is getting close to 1,400 pounds.

There are folks on here who claim to carry 600-1,000 pounds of stuff with them when they camp. I'm not sure what they carry with them... but it is pretty easy to pack light. You can always go to a grocery store near the campground to pick up food and water if you really need to lower the travel weight.

Three other things I will share with you:

1) The claimed weight of most trailers is less than the actual weight. This is true throughout the RV world.
2) Tongue weight is usually fairly high on these little fiberglass trailers. Small cars like yours and mine prefer to have less weight on the rear suspension. In Europe, they usually recommend 5% of the trailer weight on the tongue. Here in the US, the recommendation is 10%. I reduced the tongue weight on my Scamp from around 15% to around 10% and the difference in ride quality is VERY noticeable.
3) Check the recommended tire pressure for your particular tires and the weight the trailer is putting on them. My tires have a max pressure of 50 PSI, but for the actual weight of the Scamp, they recommend between 15 and 20 PSI. I lowered them from 35 PSI to 20 PSI and the trailer bounces a lot less, and the tires do not run hot at this pressure. Tires running too hot is a sign that the tire pressure is too low. I am not doing anything odd here, I am actually going by Scamp's and the tire manufacturer's recommendation. You will hear a lot of people say that you should run the max pressure allowable, but you will feel a lot of bouncing and jerking... especially with a smaller car. And I can't imagine that all that bouncing is good for the trailer frame, suspension, coupler, or your camping gear inside.
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Old 11-01-2010, 02:09 PM   #7
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Quote:
Originally Posted by Rich Morrison View Post
Thanks Donna. I have a 1985 Toyota Camry with a tow rating of 1500 lbs. The car has 68000 miles and is in excellent condition. I plan to install electric brakes if the trailer doesn't already have them. I will install a transmission cooler and proportional brake controller. Rich
Rich;
Be aware that in the case of most fiberglass trailers with torsion axles...
If it came without brakes, it came without backing plates, and a new axle will be required to add brakes. This is not a huge deal but you should look for the backing plates or the presence of brakes when you buy and consider the cost.
As for tire pressures, check with a dozen tire suppliers and see if you can find one who agrees with mcbrew.... who knows? there may just be one!
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Old 11-01-2010, 02:54 PM   #8
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Floyd and I have beat this one to death... I trust the tire manufacturer and the trailer manufacturer... He trusts the guy who mounts tires form a living.
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Old 11-01-2010, 02:59 PM   #9
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I am going to have to do some research because I will admit that I didn't know tire manufacturers recommended 15-20 psi inflation for ~1500# load. I know I have not been running my trailer tires that low; in fact that sounds super low to me. Maybe I'm guilty of over-inflation all this time?

mcbrew, do you have this information handy? What tire manufacturer are your tires from?
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Old 11-01-2010, 05:20 PM   #10
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Originally Posted by mcbrew View Post
Floyd and I have beat this one to death... I trust the tire manufacturer and the trailer manufacturer... He trusts the guy who mounts tires form a living.
Not only am I the guy,but I have 35 years of experience and have dealt with the manufacturers and their field representatives as a fleet mechanic and in auto racing.
You are in fact, relying on a chart which is pretty much ubiquitous and nearly always attached to further information, which you have chosen to ignore when it was presented to you.
I challenge you to call 10 goodyear dealers or their suppliers and find one who will concur with your conclusions. Whether you do or not I suggest you do what you think is best and advise others accordingly.

The only part of your response which sticks in my craw is your characterization of factory and manufacturer representatives as "the guy who mounts tires form a living" (sic) in an effort to discredit both their and my position. In fact these are the guys who write the things that you selectively quote.

Notice I simply advised seeking a second through thirteenth opinion and then making the choice, even to the point of accepting your advice, with or without substantiation if so desired.

I personally have no "rough ride" issues and don't consider my tires as suspension components,eventhough I have entertained the arguments to the contrary {between mounting tires of course}

I am sure you are an honest fellow and I invite you to report back here with the responses or explanations recieved from direct contact with the factory representatives, perhaps that will put this matter to rest.
Kindest regards
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Old 11-01-2010, 06:17 PM   #11
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Inflation Pressures -- Goodyear Marathon

floyd:

I checked here: www.goodyear.com/rv/pdf/rv_inflation.pdf

I'm attaching a table from this reference.

Our trailer's tires are ST185-80R-13 and our loaded axle weight is about 1000 pounds on each side, so I believe the correct inflation pressure is about 30 psi.

Mcbrew says his trailer has less than 700 pounds per tire (he says the loaded weight is 1400 pounds but that would include tongue weight) then it seems the inflation pressure could be as low as 15 psi.

Brian
Attached Files
File Type: pdf Inflation Pressure 2.pdf (70.8 KB, 14 views)
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Old 11-01-2010, 07:12 PM   #12
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Wow, that is really interesting. I can't imagine running at 15 psi, but....? I am not a tire expert at all, so I'm just learning along with the thread here. I thought I remembered something about one reason that people are supposed to use ST tires and not car/truck tires is because you can run with higher pressure? If that is true, then this seems to contradict it (at least to my untrained mind).

I do notice an asterisk on Goodyear's data chart that Brian linked to, which leads to this:

* Industry standards for load & inflation are in the process of being revised. These tables are current as of 01/01/05. For the most current
information, please visit the RV Tire section of Goodyear’s Web site at Goodyear RV Tires.


However since where they tell you to go for current info seems to lead right back to the chart where Brian got his info, it seems a bit circular

I'll be eagerly watching this thread to learn more about tire inflation. Thanks to the knowledgeable folks chipping in.

Raya
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Old 11-01-2010, 11:46 PM   #13
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Quote:
Originally Posted by Brian Van Snell View Post
floyd:

I checked here: www.goodyear.com/rv/pdf/rv_inflation.pdf

I'm attaching a table from this reference.

Our trailer's tires are ST185-80R-13 and our loaded axle weight is about 1000 pounds on each side, so I believe the correct inflation pressure is about 30 psi.

Mcbrew says his trailer has less than 700 pounds per tire (he says the loaded weight is 1400 pounds but that would include tongue weight) then it seems the inflation pressure could be as low as 15 psi.

Brian
Ok, So you checked the same info that Mcbrew checked, It is the same chart used by every tire company in the US, the same ones who will void your warranty for underinflation, Notice I did not say "show me the same old chart".

On page 6 of the following link is "Same old Chart" with it's attached disclaimer which I have found from the reps of every tire manufacturer of trailer tires with whom I have consulted, including Goodyear.
The chart is interesting but Paul Harvey had it right... You must hear "the rest of the story".
Having heard it... do as you please, I know I will.

http://www.carlisletire.com/product_...are_safety.pdf
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Old 11-02-2010, 09:06 AM   #14
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Isn't the recommended tire pressure printed on the side of the tire? That's what I've always used. I also account for the outdoor temp summer and winter.
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