Reply
 
Thread Tools Display Modes
Old 04-21-2011, 08:20 PM   #1
Junior Member
 
Join Date: Apr 2011
Posts: 27
Load Range C tires on 11,140lb GVWR trailer??

Hi folks,

Very happy with our purchase of an '11 Salem 26TBUD.
We haven't picked it up yet as I'm recovering from knee surgery, but I was looking over the spec's and noticed that it has 205/75D14 tires with Load Range C rating.
I believe it has TowMaster tires, and after looking at their site it looks like the MAX weight rating per tire is 1760lbs. Considering the unit has a dry weight of 6410lbs, am I thinking correctly that these tires will only allow me about 600lbs of payload before I'm over their max ratings? Not to mention that they come nowhere close to be able to handle the trailer's GVWR of 11,140lbs.

Any advice is appreciated,

Mike
__________________

__________________
puckdad is offline   Reply With Quote
Old 04-21-2011, 09:43 PM   #2
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Quote:
Originally Posted by puckdad View Post
Considering the unit has a dry weight of 6410lbs, am I thinking correctly that these tires will only allow me about 600lbs of payload before I'm over their max ratings? Not to mention that they come nowhere close to be able to handle the trailer's GVWR of 11,140lbs.
Mike, I know it sounds counter intuitive, but there is plenty of capacity in those tires. Remember that not all the weight is carried by the tires alone.

In a 5th wheel 20-25% of the GVWR is carried by the King Pin and the rest divided by the 4 tires.
In a TT, the tongue weight is supposed to be 10-20% of the camper's GVWR for sway control and stability. The balance is carried by the tires.

New Travel Trailer for sale | 2012 Forest River Salem LE 26TBUD Bunk House | Beilstein Camper Sales | RV Sales Missouri - RVUSA.com

It looks like your numbers might be off if this is your camper.
dry weight 5075 and GVWR is 5880 with a payload of 805 pounds.

If you loaded the 805 pounds in your TT, the minimum tongue weight carried by the truck would be 588 pounds and the maximum safe would be 1176 pounds. Optimum (15%) would be 882 pounds.

5880 minus the 882 = to be 4998 carried by the 4 tires.

4998 divided by 4 = 1249.5 pounds per tire; well under the 1760 rating.

Even at the minimum 10% loading you would have 1343 pounds on each tire.

Additionally, Towmaster does not make a 205/75D14 tire, I think you meant 205/75R14. TowMaster Radial Trailer Tire 14 and 15 inch

I could not find the inflation sheet for Towmaster, but here is the inflation sheet for Maxxis Tires:
At 50 PSI a Load Range C Maxxis tire will support 1760 pounds like your Towmaster.

Was that helpful?
Attached Files
File Type: pdf maxxis 8008load.pdf (142.2 KB, 20 views)
__________________

__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-22-2011, 02:38 AM   #3
Junior Member
 
Join Date: Apr 2011
Posts: 27
Hi Herk,

Good point on the tongue weight - forgot about that.

When we looked at the trailer there was a 'weigh-in' sticker on the inside of the door that declared that the weight of the unit with options is 6410lbs. As per the brochure the GVWR of the unit is 11,140lbs.

It's funny that in the brochure specs every other trailer with a GVWR over 10Klbs gets 225/75/R15's except for this unit...kinda' weird. Then again, the brochure I have is for '10, but their website still only shows the '10's as well.

Thanks again for the info.

Mike
__________________
puckdad is offline   Reply With Quote
Old 04-22-2011, 06:28 AM   #4
Senior Member
 
fonzie's Avatar
 
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 3,237
http://www.forestriverinc.com/nd/def...ries=TTrailers

http://www.forestriverinc.com/nd/def...series=SalemTT

Depending where you live, there is two rating for the 26TBUD......
__________________
fonzie is offline   Reply With Quote
Old 04-22-2011, 07:15 AM   #5
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
OK, I am confused.

Why would there be such radically different GVWR ratings on a camper with the same Dry weight and yet 3335 pounds different on the max gross weight?

I figured out the one I had as I spotted the LE which I think means an "Ultra-Lite" version, but the other two have me stumped.

If you have the "Northwest" Version, I would love to know the Unladen Weight off the yellow sticker and the GVWR listed there. From the flyer fonzie posted, that seems like a heck of a lot of cargo.
A tad over 5,000 pounds! I CAN take the table saw!

My money is on a misprint typo in the Northwest brochure, UNLESS your yellow sticker says different.
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-22-2011, 07:32 AM   #6
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
OK, I am going to re-spin these numbers with the "Northwest" version and see how it comes out.

If you loaded the TT 11140 pounds, the minimum tongue weight carried by the truck would be 1114 pounds and the maximum safe would be 2228 pounds. Optimum (15%) would be 1671 pounds.

11140 minus the 1671 = to be 9469 carried by the 4 tires.

9469 divided by 4 = 2367 pounds per tire; well OVER the 1760 rating of the tires.

Even at the MAXIMUM 20% loading you would have 2228 pounds on each tire. Again, way over.

Unless there are 6 C rated tires under that "Northwest" version you would need four E rated 15 inch tires and 5,000 pound axles to hold them.
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-22-2011, 02:25 PM   #7
Junior Member
 
Join Date: Apr 2011
Posts: 27
OK, I'm glad my confusion isn't exclusive.

It is a Northwest version that we bought.
The yellow sticker read 6410lbs - the weight of the unit "as built" I'm guessing.
Inside the kitchen cabinet there was the standard decal listing the appliances etc and that's where I saw the GVWR rating of 11,140lbs.
When I saw that I thought, "Wow, that's quite the payload." Where I'd put 5000lbs of stuff I couldn't figure out.

When looking at the floorplans ours looks exactly like the non-Northwest version as the other has the extra outside storage compartments.

I'm almost guessing that the wrong decal regarding GVWR was put in our unit as I'm sure that FR wouldn't send out such a mis-match.
__________________
puckdad is offline   Reply With Quote
Old 04-22-2011, 02:41 PM   #8
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Easy to check. Do you have E rated tires on it or C?

I can not see any way that sticker is right with 4 C rated tires.

Someone else chime in here. What am I missing?
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-22-2011, 03:07 PM   #9
camping
 
tentcamper1's Avatar
 
Join Date: Feb 2010
Location: Elkhart, Indiana
Posts: 988
I looked at the brochure and it stats 205/75D14"C" tires. I think puckdad should call the factory to get a clarification. all the models on the brochure that have a gvwr over 10,000 have these tires listed 225/75R15"D". it might be a problem that Forest River has overlooked. those tires have to be the wrong size/spec for all the listed weight ratings.
__________________

2007 Chevy 2500HD CC
2010 V-Lite 30WRLTS
Nights Camped 2011 -64
Nights Camped 2012 -50
"I Live in My Own World, But It's OK. They Know Me"
tentcamper1 is offline   Reply With Quote
Old 04-22-2011, 03:09 PM   #10
Senior Member
 
Join Date: Jun 2010
Location: Ontario
Posts: 719
My guess is, just the information in the brochure is wrong ....Is there any way to find a close by dealer and to go check the tires easily ?

Think of all the liability issues they would have if they produced a unit with tires which does not have the capability to carry the unit. Just wrong information in the documentation I am sure .... Nevertheless I would MAKE sure before taking delivery that it has the right tires, and I would definitely REFUSE to take delivery if the tires are the wrong type.

My Canadian 0.02 cents worth information which is now worth 0.021 US cents
__________________

__________________
2009 Ford F-150 XLT/XTR 5.4l, CrewCab. long bed
2011 Surveyor SV-291
Goomph is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:21 AM.