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02-18-2019, 05:38 AM
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#1
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Senior Member
Join Date: Aug 2013
Location: Northeastern Nebraska
Posts: 969
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Load range E tires too much?
I had a set of load range C Power king Towmax tires on my 5th wheel. Rode great but tires all separated. Cheap china bombs I know that now but they rode great.
In my infinite wisdom I though the heaver the tire the better. I went to my local tire guy. He suggested Carlisle radial trail HD. I opted to jump over the load range D and go straight to E. 2800 lb capacity, 80 psi, 80 mph speed rating. Whole trailer only weighs 10,000 lbs.
Well now the trailer rides like a dump truck. Everything is all bounced everywhere. Wife is not happy.
__________________
06 forest river Cardinal 34 TS towed by 03 freightliner Columbia HDT 435 hp 60 series Detroit, 10 speed, 3:55 gears with full locker. 260 inch wheel base. I am a Father, Farmer, and A Trucker.
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02-18-2019, 05:57 AM
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#2
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Senior Member
Join Date: May 2013
Location: Ontario, California
Posts: 2,429
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As an alternative why not install Shock Absorber's. You'll probably have to fabricate up some brackets but the shocks will improve the ride characteristics of the 5th wheel immensely. The old tires were thin and thus absorbed a lot of the road vibrations. The new tires with the load range "E" are much thicker and do a better job of providing mental security but lack in the comfort area. Mental security in the form of not having to worry 'too much' about tire separation or blow outs.
__________________
[SIGPIC][/SIGPIC]2016 Newmar Dutch Star 4369
Newmar Owners Club
USAF 1966-1969,- Law Enforcement 1969 - 2003, Retired since March 2003
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02-18-2019, 05:57 AM
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#3
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Senior Member
Join Date: Oct 2017
Posts: 207
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We had the Carlisle Radial Trail HD "E" on our previous fifth wheel, but it weighed 14,000 pounds. We loved the ride they gave on that particular trailer. You might try a bit less air in each tire just to see if it improves the ride any.
Remember - the tire pressure recommended on the side of the tire is the MAX pressure for the MAX load - so I wouldn't think it would hurt to deflate slightly for a considerably lighter trailer.
__________________
Robert & Estha Shiflet
Georgetown XL 378TS
Jeep Willys Gladiator Tow Vehicle
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02-18-2019, 06:22 AM
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#4
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Senior Member
Join Date: Sep 2015
Posts: 474
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Weigh your trailer as loaded for camping then adjust the tire pressure to your load. You may find the ride improves.
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TomC
Northwest Ohio
2004 Holiday Rambler Admiral 30pdd.
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02-19-2019, 05:30 AM
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#5
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Senior Member
Join Date: Aug 2013
Location: Northeastern Nebraska
Posts: 969
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Quote:
Originally Posted by TCollins
Weigh your trailer as loaded for camping then adjust the tire pressure to your load. You may find the ride improves.
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I weighed it a couple years ago. If I remember right I'm around 7500 on the trailer axles.
__________________
06 forest river Cardinal 34 TS towed by 03 freightliner Columbia HDT 435 hp 60 series Detroit, 10 speed, 3:55 gears with full locker. 260 inch wheel base. I am a Father, Farmer, and A Trucker.
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02-19-2019, 05:33 AM
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#6
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Senior Member
Join Date: Aug 2013
Location: Northeastern Nebraska
Posts: 969
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Quote:
Originally Posted by LJowdy
As an alternative why not install Shock Absorber's. You'll probably have to fabricate up some brackets but the shocks will improve the ride characteristics of the 5th wheel immensely. The old tires were thin and thus absorbed a lot of the road vibrations. The new tires with the load range "E" are much thicker and do a better job of providing mental security but lack in the comfort area. Mental security in the form of not having to worry 'too much' about tire separation or blow outs.
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I talked to the dealer I bought the trailer through. He said the same thing. That shouldn't be too hard to do.
__________________
06 forest river Cardinal 34 TS towed by 03 freightliner Columbia HDT 435 hp 60 series Detroit, 10 speed, 3:55 gears with full locker. 260 inch wheel base. I am a Father, Farmer, and A Trucker.
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02-19-2019, 07:51 AM
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#7
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,874
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Quote:
Originally Posted by jenandjon
I weighed it a couple years ago. If I remember right I'm around 7500 on the trailer axles.
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Things can change.
I weighed my MH 5 years after the first weigh in, and it was over 1,100# heavier. I thought I was fully loaded for the first weigh in.
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2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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02-19-2019, 07:24 PM
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#8
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Senior Member
Join Date: Aug 2013
Location: Northeastern Nebraska
Posts: 969
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Good point.
__________________
06 forest river Cardinal 34 TS towed by 03 freightliner Columbia HDT 435 hp 60 series Detroit, 10 speed, 3:55 gears with full locker. 260 inch wheel base. I am a Father, Farmer, and A Trucker.
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02-20-2019, 01:42 PM
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#9
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Senior Member
Join Date: May 2005
Location: Carlos, Texas
Posts: 1,746
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I was about to put E's on my 5'er till suddenly I didn't own it any more. I figured that was a good reason not to. I might put them on my little TT when it's time, we'll see.
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02-20-2019, 02:01 PM
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#10
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Senior Member
Join Date: Jul 2015
Posts: 284
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Load range C on a fifth wheel seems kind of light since they have a max weight rating of like 1400 lbs (could be why they separated to begin with), on 10k weight 5th trailer assume 2k pin weight so that leaves 8k on the axles/4k per axle/ 2k per tire. The load range E tires do not have to be aired up to 80psi. Me I would weigh the rig find out how much is on the trailer axles then look up the load inflation table of the tire and put in the correct pressure for that weight, add another 5 or 10 psi for an additional safety factor. You might only be looking at 60psi which will give a noticeably better ride than 80psi. Load range C tires have a max inflation of I think it is 50psi. Still do the shocks which would help the ride even more.
IIRC my load range E tires I have only at 65psi for my trailer weight and that still gives me a substantial safety margin for the weight they are carrying.
__________________
2016 Jayco Eagle 27.5 RLTS
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02-20-2019, 02:21 PM
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#11
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Junior Member
Join Date: Feb 2018
Location: Adirondack Mtns.
Posts: 26
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I am amazed that there were C's on the trailer, obviously they were not strong enough for that heavy trailer.
I have D's on my 7800 lb. trailer now and I'm switching to E's this spring.
MUCH better to be over rated than under.
__________________
Do not follow me for I may not lead.Do not lead for I may not follow.Do not stay beside me for the path is narrow.... In fact just leave me alone!
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