Go Back   Keystone RV Forums > Keystone Tech Forums > Tires, Tires, Tires!
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 12-14-2018, 08:38 AM   #71
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,873
Quote:
Originally Posted by flybouy View Post
Seems like lately there are some folks just looking to get into a confrontation and then complain that their feelings are hurt. I think you are on point on the way we communicate here. Like all writing, the author has to write to the audience and the audience needs to have the comprehension level for the material. Often, in attempting to make a point, especially where safety is concerned, some respondents (raising hand here) will take a stern approach in conveying the importance when we sense the OP isn't understanding the response. I've been criticized for "jumping" on people and insulting someone for these actions and for attempting humor which some folks apparently think is not appropriate. I understand that with the written word you don't have the tone and inflection to convey the intent of words but I've seen a lot of adhanom attacks lately from some folks in response where the tone is crystal clear.
So my point with this winded response is this, I think folks should take a breath and reflect before clicking that submit button. As you suggested in another post recently, read the OP, reread it, compose your reply, reread it then submit or edit. John you have been the voice of reason on this forum and you must have the patience of a Saint. I for one appreciate and want to thank you for what you do and how you do it.
For me personally I'm going to stay away from this forum for a few weeks. The surgery on my cervical spine was postponed until 12/21 so I'm going to focus on Christmas and family without reading the constant discontent that seems to be prevalent of late.
Here's hoping you all have a happy Christmas, or holiday.

Marshall,

Yes, it does seem like we've had some unhappy folks from time to time lately but don't let it get you down. It's almost like the forum is becoming a reflection of what is going on in the world unfortunately. Hopefully it will get back on track since we all should have a common denominator - RVs.

Concentrate on family and Christmas; not on the surgery. Wishing you well on the surgery, a Merry Christmas and Happy New Year. Come back and join in when you are up to it.
__________________

__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough is offline   Reply With Quote
Old 12-14-2018, 08:53 AM   #72
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 1,244
I make it a point to know a little something about a tire before I write about it. The 17.5" Michelin tire mentioned in this thread was an oddity. Michelin supported it as OEM for RV trailers. They had a rep at the DRV factory.

I actually had a sit-down with a Michelin rep at Michelin of North America - 10 miles from my home - about speed limit regulations for the tire mentioned. They cold not justify using commercial tire rules for manipulating the tires speed limit, because being fitted to RV trailers does not allow deviation from FMVSS standards.

Other than the low speed limit, the tire has a great footprint for numerous RV trailer applications. Its OD is 30.7" with a OW of 8.7" and it has a wheel/rim width range of 6.00 - 6.75". So it can surely fit into any wheelwell where 16" tires with load capacities over 4000# are found. However it would surely be over kill when fitted to any RV travel trailer and would never be recommended for such fitment by a trailer manufacturer. However, how often do they ever recommend replacement tires different from their OE tire fitments?

Reference: Michelin Tire Data Book page #56.
https://www.michelintruck.com/assets...k_Sept2011.pdf


Should this tire be discussed in this thread? The door was opened. I didn't open it, I just provided some info about the tire and it's usage on RV trailers.


One of the things this particular tire fitment did is point out that top end RV trailer manufacturers are willing to go to extremes to fit top end tires to their units. This venture failed and another top name brand tire manufacturer got the nod for OEM.


Big heavy Keystone trailers are now using a popular China ST tire manufacturer for those over 4000# load capacity tires. You know the one, starts with an "S".

Oh yes, the OP. Feedback should be after the fact. Just because I'm using them doesn't mean I'm going to endorse them before they've completed their life cycle. Of course there are those that will do it the day they make the decision to use them.

Take the GY Marathon. Got all sorts of bad feedback. I personally had five catastrophic failures with them. In my case I didn't see it as entirely a GR manufacturing problem. I saw it as just as much a manufacturer's mismanagement of resources problem. And, it got me into RV trailer tire researching. Our trailer is a 2003 Everest 363K. Its Vehicle certified axles (GAWRs) are 6000#. Their OE tires were ST235/80R16D with a load capacity of 3000# at 65 PSI. None of them, including the spare lasted a year. We were very active full timers traveling with max cargo capacity. All tires degrade, STs a lot faster when there is no reserves.

Here is a reference with the specs for the 363K. It confirms the tire size. They are none of the LRDs on the market today.


https://www.jerrystrailers.com/fckim...03_Everest.pdf
__________________

__________________
An Old Navy Aircraft Mechanic that writes about tires.
Our rig. NC mountain pull-off. US-19.
http://www.irv2.com/photopost/showfull.php?photo=35007
CWtheMan is offline   Reply With Quote
Old 12-14-2018, 03:28 PM   #73
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 13,485
Cal,

I have great respect for your well measured, thoughtful posts regarding tires. Sometimes it seems to get a bit more technical than most of us need, but the posts do provide measured, accurate information that's useful and a good source to reference when any member tries to make the decision on what to use as replacements for existing tires.

I appreciate your efforts and wanted to be sure that you know my comments were NOT directed toward you, your posts or the manner in which you post.

Thanks for taking the time to try to provide accurate, meaningful information about "all things tire"...
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is online now   Reply With Quote
Old Yesterday, 06:51 PM   #74
Tireman9
Member
 
Join Date: Sep 2018
Location: Akron
Posts: 54
Quote:
Originally Posted by CWtheMan View Post
I make it a point to know a little something about a tire before I write about it. The 17.5" Michelin tire mentioned in this thread was an oddity. Michelin supported it as OEM for RV trailers. They had a rep at the DRV factory.

I actually had a sit-down with a Michelin rep at Michelin of North America - 10 miles from my home - about speed limit regulations for the tire mentioned. They cold not justify using commercial tire rules for manipulating the tires speed limit, because being fitted to RV trailers does not allow deviation from FMVSS standards.

Other than the low speed limit, the tire has a great footprint for numerous RV trailer applications. Its OD is 30.7" with a OW of 8.7" and it has a wheel/rim width range of 6.00 - 6.75". So it can surely fit into any wheelwell where 16" tires with load capacities over 4000# are found. However it would surely be over kill when fitted to any RV travel trailer and would never be recommended for such fitment by a trailer manufacturer. However, how often do they ever recommend replacement tires different from their OE tire fitments?

Reference: Michelin Tire Data Book page #56.
https://www.michelintruck.com/assets...k_Sept2011.pdf


Should this tire be discussed in this thread? The door was opened. I didn't open it, I just provided some info about the tire and it's usage on RV trailers.


One of the things this particular tire fitment did is point out that top end RV trailer manufacturers are willing to go to extremes to fit top end tires to their units. This venture failed and another top name brand tire manufacturer got the nod for OEM.


Big heavy Keystone trailers are now using a popular China ST tire manufacturer for those over 4000# load capacity tires. You know the one, starts with an "S".

Oh yes, the OP. Feedback should be after the fact. Just because I'm using them doesn't mean I'm going to endorse them before they've completed their life cycle. Of course there are those that will do it the day they make the decision to use them.

Take the GY Marathon. Got all sorts of bad feedback. I personally had five catastrophic failures with them. In my case I didn't see it as entirely a GR manufacturing problem. I saw it as just as much a manufacturer's mismanagement of resources problem. And, it got me into RV trailer tire researching. Our trailer is a 2003 Everest 363K. Its Vehicle certified axles (GAWRs) are 6000#. Their OE tires were ST235/80R16D with a load capacity of 3000# at 65 PSI. None of them, including the spare lasted a year. We were very active full timers traveling with max cargo capacity. All tires degrade, STs a lot faster when there is no reserves.

Here is a reference with the specs for the 363K. It confirms the tire size. They are none of the LRDs on the market today.


https://www.jerrystrailers.com/fckim...03_Everest.pdf



Good ref info on the Federal Regs.


Do wonder what your opinion is regarding the new RVIA tire "reserve load" requirements? Reserve Load, for those not familiar with the term, is the excess load capacity of the subject tire above the actual loading.


RVs made before Nov 8, 2017, were only required by DOT and RVIA to be capable of supporting the GAWR. After Nov 8, RVIA requires RV be capable of supporting 10% more load than the GAWR numbers.
From a tire standpoint, this clearly results in a safety improvement.


My question is. Should owners of RV's made before Nov 8 follow the old requirements or the new, improved requirements? If they follow the new requirements are they doing something wrong?
__________________
Retired Tire Design Engineer (40 years) On FMCA Tech Advisory Committee. Write a blog on RV Tire Safety. Read THIS post on Why Tires Fail.
Tireman9 is offline   Reply With Quote
Old Yesterday, 08:31 PM   #75
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,873
Quote:
Originally Posted by Tireman9 View Post
Good ref info on the Federal Regs.


Do wonder what your opinion is regarding the new RVIA tire "reserve load" requirements? Reserve Load, for those not familiar with the term, is the excess load capacity of the subject tire above the actual loading.


RVs made before Nov 8, 2017, were only required by DOT and RVIA to be capable of supporting the GAWR. After Nov 8, RVIA requires RV be capable of supporting 10% more load than the GAWR numbers.
From a tire standpoint, this clearly results in a safety improvement.


My question is. Should owners of RV's made before Nov 8 follow the old requirements or the new, improved requirements? If they follow the new requirements are they doing something wrong?

Tireman, my thought would be that the new "reg" requiring the 10% cushion is, and always should have been, common sense. I, personally, made it a point to buy tires that exceeded both the old requirements and the new. As far as what guideline you should follow....my thought is how much attention do you pay to your towing and safety? If you do, you will have that cushion. If someone follows the new guidelines are they doing something wrong?? Obviously that has got to be a silly question trying to get CW into some conversation. Anyone trying to give themselves a cushion for safety is always doing the right thing. Maybe not so much so for folks that try to draw good, helpful folks into some sort of pointless debate trying to irritate, aggravate and demean their posts as you seem to do. You have only come on recently and seem to constantly go at CW. I don't recall that you've shared anything meaningful to me.....is there a reason for you to be here other than to shadow CW and try to irritate him? Not trying to be a pain, but that is what I see.
__________________

__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough 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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RV is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 06:11 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.