Tire Pressures on 13' Burro - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-07-2012, 06:52 PM   #1
Member
 
Name: will
Trailer: Currently Shopping
Washington, D.C.
Posts: 42
Tire Pressures on 13' Burro

So I had two brand new tires on my 13' Burro (1,250 lb dry weight, ~1,550 lb loaded, 200 lb tongue weight), which I inflated to 44lbs and drove 3,000 miles. I checked them the other day and the tread down the middle is almost completely worn off, so I had to buy a new tire and switch to my spare (basically replaced both tires).

Now I am wondering what pressure to run them at to avoid this happening again. The tire store guy told me that this wear was normal and that they should be run at between 35-45PSI or they will fail, and they would need to be replaced every 3,000 miles. Hoping that is not true, I am turning to this forum.

Tire information:
13" Nanco ST175/80D-13 (tubeless, 2 plies sidewall, max load 1,360 lbs at 50PSI max pressure)
13" Load King ST175/80D-13 (tubeless, 2 plies sidewall, max load 1,360 lbs at 50PSI max pressure)

My approach: I am using the goodyear chart (http://www.goodyearrvtires.com/pdfs/rv_inflation.pdf) and assuming the weight is evenly distributed, and therefore assuming there is about 800 lbs on each wheel, and so the pressure should be between 20-25 psi in each tire.

I know there are a lot of other posts on this issue but I have not found any definitive answers, so any help would be appreciated.
__________________

__________________
wklose99 is offline   Reply With Quote
Old 09-07-2012, 07:16 PM   #2
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,066
Hi Will. There is currently a rather interesting discussion on tire pressure just up the road

Help, Im Fishtailing (and other first trip encounters)

so I will stay out of that but if the tire guy says you have to replace your tires every 3000 mile, find a new tire guy. Also I would recommend buying a top shelf tire. Most folks think that tires should be replaced due to age long before the tread wears out. I'm at 3 years and over 20 k miles on mine. Good luck, Raz
__________________

__________________
Raz is offline   Reply With Quote
Old 09-07-2012, 07:29 PM   #3
Senior Member
 
Donna D.'s Avatar
 
Name: Donna D
Trailer: Escape 5.0 TA, 2014
Oregon
Posts: 24,434
Quote:
Originally Posted by wklose99 View Post
and they would need to be replaced every 3,000 miles.
the guy is nutz and need to be admitted for a psych eval for his own safety. Are you sure he didn't leave off one zero on the end? That would make a lot more sense.

I'm with Raz, find a new tire guy and report this one to the BBB.
__________________
Donna D.
Ten Forward - 2014 Escape 5.0 TA
Double Yolk - 1988 16' Scamp Deluxe
Donna D. is offline   Reply With Quote
Old 09-07-2012, 08:16 PM   #4
Member
 
Name: will
Trailer: Currently Shopping
Washington, D.C.
Posts: 42
It seems like everyone in that thread is saying inflate to the max pressure indicated on the sidewall of the tire, but as i have learned inflating that much leads go the tread in the middle being gone in 3,000 miles.

Is there something else that could have caused the tread down the center to rub off in 3,000 miles? The previous owner had over 10k miles on a set and he still had plenty of tread.
__________________
wklose99 is offline   Reply With Quote
Old 09-07-2012, 09:12 PM   #5
Senior Member
 
Byron Kinnaman's Avatar
 
Name: Byron
Trailer: 2006 Scamp 13' towed with a 2005 Dodge Dakota 4.7l Magnum W/full tow package (over kill)
Oregon
Posts: 6,312
Registry
Quote:
Originally Posted by wklose99 View Post
It seems like everyone in that thread is saying inflate to the max pressure indicated on the sidewall of the tire, but as i have learned inflating that much leads go the tread in the middle being gone in 3,000 miles.

Is there something else that could have caused the tread down the center to rub off in 3,000 miles? The previous owner had over 10k miles on a set and he still had plenty of tread.

There's not very many reasons a tire will wear out in 3,000 miles. I believe the most likely reason is that you have a wheel or axle out of alignment. I have well over 20,000 miles on my current set of tires and there's no sign of tire wear of any kind.
__________________
Byron & Anne enjoying the everyday Saturday thing.
Byron Kinnaman is offline   Reply With Quote
Old 09-07-2012, 11:53 PM   #6
Senior Member
 
floyd's Avatar
 
Name: Floyd
Trailer: 2004 13 ft Scamp Custom Deluxe
IllAnnoy
Posts: 6,051
Registry
The Goodyear chart is NOT recommended pressures, it is minimum pressure to avoid damage to the tire at the specified load.

While over inflation can cause a tire to wear in the center of the tread, so can running a tire which has a section width greater than the wheel width... How wide are your wheels?
What was the original tire size supplied with the wheels and/or the trailer?
Could it have been a 155/80?

Too much negative camber in combination with too much toe-in might also cause the tire to wear in the center more than elsewhere.
__________________
floyd is offline   Reply With Quote
Old 09-08-2012, 06:56 AM   #7
Senior Member
 
cpaharley2008's Avatar
 
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,398
Registry
My question is why didn't you see this @ 1000 miles or 2000 miles, driving 3000 miles and not checking seems questionable. Is your tire gauge wrong, the ones in gas stations are almost always incorrect. Obtain your own and check your tires daily. Any odd wear pattern should have been observed and addressed via more or less air a lot sooner than wearing out the tire. You probably had more than what you thought you had because as others have already said, follow what is on the tire.
__________________
cpaharley2008 is offline   Reply With Quote
Old 09-08-2012, 07:26 AM   #8
Senior Member
 
Name: Jesse
Trailer: 1984 Scamp 13'
Maryland
Posts: 818
Just keep in mind that the people who work at a tire shop are no more qualified to make these claims as the guy behind the counter at McDonalds is qualified to raise cattle.

Personally, I run my tires as 20 PSI just like Scamp and Goodyear recommended... But I am going to concede this argument to those here who don't know the definition of the word MAXIMUM.
__________________
-Jesse
SOLD! - 1984 Scamp 13 in Maryland.
mcbrew is offline   Reply With Quote
Old 09-08-2012, 07:27 AM   #9
Senior Member
 
Thomas G.'s Avatar
 
Name: Kinga DeRode
Trailer: For Sale Or Rent
Rooms to Let 50 Cents
Posts: 5,103
I agree with the wheel alignment diagnosis. Incorrect tire pressure alone won't wear out a tire that fast.

Trailer Tire Problems & Tips
__________________
UHaul and Burro owners, join the UHaul Campers on Facebook. https://www.facebook.com/groups/529276933859491/
Thomas G. is offline   Reply With Quote
Old 09-08-2012, 12:32 PM   #10
Member
 
Name: will
Trailer: Currently Shopping
Washington, D.C.
Posts: 42
Quote:
Originally Posted by cpaharley2008
My question is why didn't you see this @ 1000 miles or 2000 miles, driving 3000 miles and not checking seems questionable. Is your tire gauge wrong, the ones in gas stations are almost always incorrect. Obtain your own and check your tires daily. Any odd wear pattern should have been observed and addressed via more or less air a lot sooner than wearing out the tire. You probably had more than what you thought you had because as others have already said, follow what is on the tire.
Im new to this and didnt think to check tread, and i made the 3000 mile trip in about a week. I did check tire pressure daily and made sure it was always around 44psi.

I checked the alignment this morning, and it looks like the back right is about .5-.75" out of alignment, and back left is about .25". Is that significant? Im running the tires at about 28psi now and will see what tread looks like after 500 miles or so. What do trailer shops charge to correct that?
__________________
wklose99 is offline   Reply With Quote
Old 09-08-2012, 07:21 PM   #11
Senior Member
 
Steve L.'s Avatar
 
Name: Steve
Trailer: 2003 Casita 16' SD
Michigan
Posts: 1,690
Registry
You seen to have bias tires based on the size you provided and not only do they wear faster than radials they're more sensitive to center row wear due to over inflation than radials are. Still, I'd expect at least 10,000 miles on properly inflated tires.
__________________
Steve L. is offline   Reply With Quote
Old 09-22-2012, 12:46 AM   #12
Member
 
Name: will
Trailer: Currently Shopping
Washington, D.C.
Posts: 42
So i got the tires replaced and after another 2000 miles they almost wore down again. I went to a new tire shop, and the tireman explained the problem-- i was running bias tires instead of radial tires. The tire guy pulled out some other bias tires with similar tread wear and explained how bias tires are too cheaply made for tires of these types.

He put on radial tires at 50 psi, ive gone about 500 miles on them so far and they are still looking good. Will be putting another 2k miles on them in the coming week so i should be sure after that that it was cheap bias tires.

Long story short, ensure youre running radial and not bias tires.
__________________

__________________
wklose99 is offline   Reply With Quote
Reply

Tags
burro


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tire pressures Steve Hilby Towing, Hitching, Axles and Running Gear 23 10-17-2011 01:15 PM
1999 Burro Tire Pressure remington850 Problem Solving | Owners Helping Owners 5 12-29-2008 05:43 PM
WANTED, BURRO,SPARE TIRE COVER Al POGUE Classified Archives 3 11-09-2008 05:41 PM
Need Help with the Right Tire Pressure for a New-to-Me Burro DENNIS GOULD Problem Solving | Owners Helping Owners 4 02-28-2008 03:24 PM
82' 13ft Burro Tire Size? Legacy Posts Care and Feeding of Molded Fiberglass Trailers 7 07-06-2003 06:22 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:53 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.