TIRE SWAP-Compact Jr. - Page 2 - Fiberglass RV


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Old 07-15-2008, 05:35 AM   #15
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The original owner had placed 2 50 lb.bags of sand ahead of the axle as far forward as possible.He also installed a tool box on the tongue
for tools,jacks and trailer gear.I think he did that to compensate for the heavier rear section which includes wood cabinets,electric refrig.,
microwave. When I pulled the trailer back to my state, the trailer was very sensative to rough/wavy roads and bumps even with the weight.
Former owner said 26 psi in the tires was his recommendation.The tires are 185/80D/13 trailer tires and rated for 1360 lbs.I could try a set
of air shocks.
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Old 07-15-2008, 07:21 AM   #16
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Former owner said 26 psi in the tires was his recommendation.The tires are 185/80D/13 trailer tires and rated for 1360 lbs.
Both sets of my trailer tires have much higher pressure (50 + 65 PSI). The recommended pressures for both our car and truck are higher than 26 PSI. I'm thinking you are underinflated, which is adding to any other problems.

What does the tire say on the sidewall for recommended inflation?
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Old 07-15-2008, 07:42 AM   #17
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Both sets of my trailer tires have much higher pressure (50 + 65 PSI). The recommended pressures for both our car and truck are higher than 26 PSI. I'm thinking you are underinflated, which is adding to any other problems.

What does the tire say on the sidewall for recommended inflation?
Thanks I will check.I carry 35-40 lbs in the pull vehicle with 17"tires.
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Old 07-15-2008, 05:09 PM   #18
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I'm not familiar with any trailer tires that require less than 40 lbs. As Roy says, underinflation will certainly contribute to handling problems.
As far as the equalizer goes I think that's serious overkill for a trailer of that weight. What the equalizer does is essentially shift the center of gravity along the length of the trailer and with something as light as a Compact Jr, that's not going to have a great impact. What WILL help, however is a sway bar. It's a whole lot cheaper and easier to rig as well.

I'm a big fan of the torsion axle even though our twenty-eight year old one is getting kinda tired. You can order these things with different pitches so the trailer will actually ride higher (or lower). I think you'll also find the ride will improve over those old leaf springs without shocks that you have now.
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Old 07-15-2008, 06:06 PM   #19
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I'm not familiar with any trailer tires that require less than 40 lbs. As Roy says, underinflation will certainly contribute to handling problems.
As far as the equalizer goes I think that's serious overkill for a trailer of that weight. What the equalizer does is essentially shift the center of gravity along the length of the trailer and with something as light as a Compact Jr, that's not going to have a great impact. What WILL help, however is a sway bar. It's a whole lot cheaper and easier to rig as well.

I'm a big fan of the torsion axle even though our twenty-eight year old one is getting kinda tired. You can order these things with different pitches so the trailer will actually ride higher (or lower). I think you'll also find the ride will improve over those old leaf springs without shocks that you have now.
Thanks. I will pump up the tires to 35-40 lbs. and see what happens.The original owner told me to leave them at 26.It worked for him.
I will run it up the road to see what happens.
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Old 07-15-2008, 06:08 PM   #20
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I'm not familiar with any trailer tires that require less than 40 lbs. As Roy says, underinflation will certainly contribute to handling problems.
As far as the equalizer goes I think that's serious overkill for a trailer of that weight. What the equalizer does is essentially shift the center of gravity along the length of the trailer and with something as light as a Compact Jr, that's not going to have a great impact. What WILL help, however is a sway bar. It's a whole lot cheaper and easier to rig as well.

I'm a big fan of the torsion axle even though our twenty-eight year old one is getting kinda tired. You can order these things with different pitches so the trailer will actually ride higher (or lower). I think you'll also find the ride will improve over those old leaf springs without shocks that you have now.
Where can you get a sway bar for trailers?
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Old 07-15-2008, 06:21 PM   #21
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Thanks. I will pump up the tires to 35-40 lbs. and see what happens.The original owner told me to leave them at 26.It worked for him.
I will run it up the road to see what happens.
First...are they TRAILER tires or simply small passenger car tires?
The recommended cold inflation pressure should be embossed on the sidewall. Please check that first before arbitrarily inflating them to 40 lbs. If they are indeed passenger car tires, OVERinflation will not help your circumstance at all.

As for the sway bar, there are several types and each has it's advantages and disadvantages. Do a search of the forum and look for a recent thread on sway bars. I think it was pretty active a few months ago. If and when you decide upon a sway bar, talk to a local hitch installing guy. They'll probably be able to access such a device for you.
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Old 07-15-2008, 06:29 PM   #22
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First...are they TRAILER tires or simply small passenger car tires?
The recommended cold inflation pressure should be embossed on the sidewall. Please check that first before arbitrarily inflating them to 40 lbs. If they are indeed passenger car tires, OVERinflation will not help your circumstance at all.

As for the sway bar, there are several types and each has it's advantages and disadvantages. Do a search of the forum and look for a recent thread on sway bars. I think it was pretty active a few months ago. If and when you decide upon a sway bar, talk to a local hitch installing guy. They'll probably be able to access such a device for you.
These are Carlisle trailer only tires....ST 175/80/D/13 maximum of 50 psi
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Old 07-15-2008, 06:50 PM   #23
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These are Carlisle trailer only tires....ST 175/80/D/13 maximum of 50 psi
My tow vehicle is a v-8 Tundra and rated to pull much more than 1200 lbs. I still keep speed to 55 most of the the time from experience.
Passing and getting back to driving lane is when I notice some side-side.Going over RR tracks, I always slow it down but still get plenty
of wheel hop or the trailer gets a little squirrly . The Tundra tires stay at 35 psi.I have tried 40 with cj but it did not help.I have several
towing bars so as to keep trailer level. The guy I bought it from had 2 50 lb.sacks of sand stowed way up in front section as there are access hatches
in this rig that he put in.The extra weight did not seem to make a positive difference so I removed.There is a took chest where the
gas bottle would have been (on tongue) I load that with tools and jack stands for the tongue weight to compensate for the heavier rear
portion of the trailer now equipped side AC,microwave,wood cabinets and electric refer.The right side is probably a little heavier that the left
side of the trailer.
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Old 07-15-2008, 07:42 PM   #24
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These are Carlisle trailer only tires....ST 175/80/D/13 maximum of 50 psi
Pump those puppies up and do nothing else until after you give it a decent real-world tow test. (Gear weight, speed, etc.) After all, you've been running those tires at half pressure. 50 lbs. is COLD and should go up somewhat after traveling a bit at speed. Forget 35~40, dude... go for it. Fifty pounds and you'll be amazed at the difference. Then after you blow out those silly rubber stems your tires probably have now, get some metal ones and you'll get thirty~forty thousand outta those Carlisles if you haven't already stressed the sidewalls but running 26 pounds in 'em.

There are threads here that explain the procedure for properly measuring tongue weight at home. Search the site for that. 10~15% of trailer weight should make that Compact follow along like a baby duck after its mama.
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Old 07-15-2008, 07:58 PM   #25
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Pump those puppies up and do nothing else until after you give it a decent real-world tow test. (Gear weight, speed, etc.) After all, you've been running those tires at half pressure. 50 lbs. is COLD and should go up somewhat after traveling a bit at speed. Forget 35~40, dude... go for it. Fifty pounds and you'll be amazed at the difference. Then after you blow out those silly rubber stems your tires probably have now, get some metal ones and you'll get thirty~forty thousand outta those Carlisles if you haven't already stressed the sidewalls but running 26 pounds in 'em.

There are threads here that explain the procedure for properly measuring tongue weight at home. Search the site for that. 10~15% of trailer weight should make that Compact follow along like a baby duck after its mama.
I will try that tomorrow.I am getting ready to take her out on the roads for a few weeks despite the gas prices.May even head to the egg meet
in Nova Scotia.
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Old 07-15-2008, 08:42 PM   #26
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you'll get thirty~forty thousand outta those Carlisles if you haven't already stressed the sidewalls but running 26 pounds in 'em.
He may have stressed the sidewalls, they are bias not radials

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These are Carlisle trailer only tires....ST 175/80/D/13 maximum of 50 psi
Note the "D" my Carlisle Radials read R13
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Old 07-15-2008, 09:24 PM   #27
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He may have stressed the sidewalls, they are bias not radials



Note the "D" my Carlisle Radials read R13
I have not put that many miles on the tires and keep in garaged and the weight off the tires.We will see how they run.There is a Carlisle dealer nearby who will check them out.If stressed...new ones will be put on.
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Old 07-15-2008, 10:40 PM   #28
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There is a Carlisle dealer nearby who will check them out.
Great!

Considering there has been a lot of discussion with the bad tire stem recall; I and I'm sure many others would be interested in hearing a Carlisle dealers point of view on the problem.

I've bought two sets of premounted Carlisle tires on rims in the last 2 years, I'd like to know if there is any chance my tires might be affected by the recall. Would you mind asking them while you are at a Carlisle dealer and posting the response? I don't think I'll get accurate information from the floor staff at Princess Auto.
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