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Old 11-20-2013, 08:55 PM   #1
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Which jack for changing a flat?

Just curious what people are using here. I like the bottle jacks but they only seem to lift up to 15" or so. The manual only recommends the frame for a jack point, which is taller than the bottle jack can go. Seems like it might be unstable when stacking a few 2x4's underneath the jack.

Mine is single axle. Would appreciate any input thanks!

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Old 11-20-2013, 09:25 PM   #2
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I carry a bottle jack, haven't had to use on the TT though. However I also carry 8 14" 2x8 that use on the corner stab jacks when setup. I would use a stack of 2x8 to raise the bottle jack with no concern.

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Old 11-20-2013, 10:14 PM   #3
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Had my first blow-out last year, posted this opinion on another form and it was dis-liked.

Since our Jayco is only 21' over all, it does not have much storage space at all. There for, everything goes into the bed of the truck which has a solid lockable folding top. I carry a couple of Rubbermaid 18 gallon containers that I put in front of the bed. One contains all of the emergency road stuff and stays on the far passengers side of the bed. There at the bottom is one of these 2 ton light weight floor jacks, with the center weight d handle.

In fireplace chats I have heard of the small foot print and upper lifting points of bottle jacks, and when your are along side of the highway with that trailer jacked up and those 18 wheelers goes whizzing by, that trailer that you are working on sways from the vacuum. Then there is the chance of a fresh rain with a muddy base or hot asphalt squishy base. Then there is crawling underneath a lowered trailer then to find a level place to try and set it.

With the small 4 wheel floor jack I had/have, lift out of truck, place by frame, connect the two piece handle,insert , shove and guide it to location, pump handle. Then as those truck goes wising by and that trailer Mons and shakes I was sure glad I have the one I had.
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Old 11-21-2013, 06:09 AM   #4
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I carry a six ton bottle jack and place it on Lynx Levelers and/or wood to provide the additional height in order for it to reach and lift the TT.
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Old 11-21-2013, 06:24 AM   #5
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I have had the pleasure of using my 3 ton bottle jack to change a flat. It worked well. Can someone explain why you would jack your trailer at the frame and not at the axle with the flat. Did I miss something?

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Old 11-21-2013, 07:17 AM   #6
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Originally Posted by FPM III View Post
I carry a six ton bottle jack and place it on Lynx Levelers and/or wood to provide the additional height in order for it to reach and lift the TT.
I use the bottle jack from my 4 Runner. I also carry 1 jack stand in the TT to stabalize if needed.


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Old 11-21-2013, 07:53 AM   #7
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Originally Posted by grayco View Post
... Can someone explain why you would jack your trailer at the frame and not at the axle with the flat. Did I miss something?

My guess.

There are many incorrect places on the axle which can cause damage if they are used. So from my perspective, for legal reasons in the operator manual it is best for the trailer manufacturers to officially suggest only jacking by using the frame. There are many people who may be lifting a trailer to change a tire which have little or no experience with jacking a vehicle or lifting heavy objects. Using the trailer frame is generally very straight-forward.

I also always carry a small roll around floor jack with blocking. It has worked more often for me to help others than I have needed it on my own vehicles. (knock/touch wood) I believe that if you keep good tires on your vehicles and keep them properly inflated (max sidewall inflation for trailers), then flat tire problems can be minimized. vic

Originally Posted by VicS1950 View Post
Per standards Special Trailer tires are speed rated to 65 mph, not 60 mph. Sorry to be a broken record, but anyone who runs their trailer tires at too low a pressure may be setting themselves up for tire failure and even handling problems. You don't need to listen to me, you can research what the experts recommend in the links below.

A Canned Response

Most special trailer tires are speed rated to 65 mph. Speed rated is not speed limited. Tire pressure can affect the speed range. Too little tire pressure is a greater sin than too much pressure. Consult your tire manufacturer information.

Personally I would not run my trailer tires at less than the max rated pressure listed on the sidewall. In my experience that mode gives good wear and puts the tire in a range for higher speeds.

Below is some specific information for
Goodyear Marathon Tires

Special Trailer ("ST") Tires

Goodyear Marathon trailer tires are widely used in a variety of towable trailer applications and are designed and branded as "ST" (Special Trailer) tires.

• Industry standards dictate that tires with the ST designation are speed rated at 65 MPH (104 km/h) under normal inflation and load conditions.

Based on these industry standards , if tires with the ST designation are used at speeds between 66 and 75 mph (106 km/h and 121 km/h), it is necessary to increase the cold inflation pressure by 10 psi (69 kPa) above the recommended pressure for the rated maximum load .

o Increasing the inflation pressure by 10 psi (69 kPa) does not provide any additional load carrying capacity.
o Do not exceed the maximum pressure for the wheel.
o If the maximum pressure for the wheel prohibits the increase of air pressure, then the maximum speed must be restricted to 65 mph (104 km/h).
o The cold inflation pressure must not exceed 10 psi (69 kPa) beyond the inflation specified for the maximum load of the tire.

More info is here:

If the link doesn't work then just add www. to this


What Carlisle says:


Underinflation is the number one cause of trailer tire failure. Low
inflation pressure elevates tread temperature, especially as speed

Review - Practices for Safe Trailer Tire Use

– Maintain air pressure at the maximum PSI recommended on the
tire sidewall.

What etrailer says:
Expert Reply:
Trailer tires should ALWAYS be inflated to the maximum psi rating as indicated on the tire without exception. The reason is that if under inflated, because trailer tires are built with a thicker side wall to handle more vertical load, a lower pressure will cause excessive heat build up and cause the tire to fail.

As always, the original thread can be accessed by clicking the blue arrow within the quote box.
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Old 11-21-2013, 07:08 PM   #8
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Regardless of what the manufacturer says, it is just fine to jack up an axle, providing it is done under the spring mounting, and not out in the middle of the axle.. This is done under the older cars that have leaf springs all the time, and no damage is done. Same idea as a trailer axle. The damage can occur if you put the jack under the middle of the axle, where it has no support.
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Old 11-21-2013, 09:03 PM   #9
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I had a blow out this year going to ga. I wound up using my scissors jack from my truck due to my bottle jack failed to lift.
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Old 11-23-2013, 04:39 AM   #10
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I carry a six ton bottle jack AND and a six ton floor jack. I'm covered whatever I may need-----I hope.


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