Closed Thread
 
Thread Tools Search this Thread Display Modes
 
Old 12-14-2015, 08:20 PM   #57
Rivet Master
 
SteveSueMac's Avatar

 
2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 5,409
Quote:
Originally Posted by Jim & Susan View Post
Crickets so far.......I was curious about the Load Range rating on the new Michelins the OP is talking about. Anybody?



Jim

I'm not 100% sure but I'd guess a C because their max PSI is 50 and their (derated) capacity is just over 2000#. A D-rated tire is 65 PSI and around 2500#. An E is 80 PSI and upwards of 3000 I believe?

Go gentle if I messed that up 😂
__________________

__________________
SteveSueMac is online now  
Old 12-14-2015, 08:42 PM   #58
Got gandkids?
 
Jim & Susan's Avatar

 
1973 27' Overlander
'Possum Holler , Georgia
Join Date: Oct 2004
Posts: 5,406
Images: 39
The internet aliens just ate my response, so let me try again........
__________________

__________________
www.nesa.org

Air No. 6427
Jim & Susan is offline  
Old 12-14-2015, 09:02 PM   #59
Got gandkids?
 
Jim & Susan's Avatar

 
1973 27' Overlander
'Possum Holler , Georgia
Join Date: Oct 2004
Posts: 5,406
Images: 39
LRC works for me. I have always had great results with Michelins. Looks like they are are in my future once again.

Many thanks to the OP and others who have contributed here.

Jim
__________________
www.nesa.org

Air No. 6427
Jim & Susan is offline  
Old 12-14-2015, 09:11 PM   #60
Rivet Master
 
SteveSueMac's Avatar

 
2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 5,409
Quote:
Originally Posted by Jim & Susan View Post
LRC works for me. I have always had great results with Michelins. Looks like they are are in my future once again.



Many thanks to the OP and others who have contributed here.



Jim

Have you weighed your trailer? I have to assume a 73 27 footer is lighter than my wide body 2012 27 footer. Loaded for camping it's about 6000# on the scales and plenty of room for the lower capacity Michelin (these ones the OP listed have about another 70#s per tire). Even I f your trailer is as heavy as mine, you would have plenty of load capacity.
__________________
SteveSueMac is online now  
Old 12-14-2015, 09:12 PM   #61
Rivet Master
 
1988 25' Excella
1987 32' Excella
Knoxville , Tennessee
Join Date: Oct 2010
Posts: 2,163
Blog Entries: 1
The Michelins mentioned at the start of the thread are a p- tire. They would have to be a LT tire to be a load range C. Yet the maximum inflation pressure for the XL is 50 lbs, the same as for load range C. Michelin used to make a 15" LT load range C and the 15" XL tire. They dropped the LT load range C.
__________________
Bill M. is offline  
Old 12-14-2015, 09:49 PM   #62
Rivet Master
 
switz's Avatar

 
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction , Arizona
Join Date: Sep 2012
Posts: 4,799
Images: 8
Per federal regulation, all trailers must be weighed as they come off the assembly line. So if two air conditioners with 50 amp service and or street side and rear awnings were installed on the line, that weight reflects those accessories.

The Michelin LTX (P) 235/75R15 XL tire is sidewall rated 2,183 pounds @ 50 psi. For non-car use (meaning trailer) it must be derated to 1,983 pounds load capacity per 49 CFR 571.110. I used this tire on our 2013 25FB International Serenity where the axle load camping ready was 5,860 pounds, which was well within the load capacity of the tire. The right rear (curb side) carried about 200 pounds more weight than the other three tires.

I also installed this tire on our 2015 23D International Serenity that has a GVW of 6,000 pounds. I have not had the time to weigh the individual wheels on my sets of scales, but there is an adequate safety margin as the axles were carrying about 5,500 pounds.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC

TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell

2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels
switz is offline  
Old 12-14-2015, 10:03 PM   #63
Got gandkids?
 
Jim & Susan's Avatar

 
1973 27' Overlander
'Possum Holler , Georgia
Join Date: Oct 2004
Posts: 5,406
Images: 39
Quote:
Originally Posted by SteveSueMac View Post
Have you weighed your trailer? I have to assume a 73 27 footer is lighter than my wide body 2012 27 footer. Loaded for camping it's about 6000# on the scales and plenty of room for the lower capacity Michelin (these ones the OP listed have about another 70#s per tire). Even I f your trailer is as heavy as mine, you would have plenty of load capacity.
Yup. Right now, as it sits today, it comes in at about 3600 lbs....but, it's not done yet. I may hold the record for the longest restoration on the planet.

I expect another 1000 lbs or so (maybe, and that's being generous on the high side).

I'm not worried about it being too heavy in comparison to modern Airstreams. The published max weight when new was only about 6300 lbs.

I should be good on the weight end of it. I'm more concerned about sidewall strength because of all the inevitable curbs and things we all encounter.

Make sense? "Trailer Tires" are "cheap". One doesn't have to an be engineer to figure that out. Just look at them next to a regular truck tire. The simply look "cheap". Tread depth is shallow and there's a lot of room between the lug surfaces (the part that touches the road) and the main carcass of the tires. New Michelin's look like a "more dense" tire. I'll take more rubber over cheap any day.

Just my ill-educated opinion.

Jim
__________________
www.nesa.org

Air No. 6427
Jim & Susan is offline  
Old 12-14-2015, 10:08 PM   #64
Got gandkids?
 
Jim & Susan's Avatar

 
1973 27' Overlander
'Possum Holler , Georgia
Join Date: Oct 2004
Posts: 5,406
Images: 39
Just noticed Andrew T is reading this thread right now.

Go for it Dude. Your opinion is valued and respected. Please weigh in.

Jim
__________________
www.nesa.org

Air No. 6427
Jim & Susan is offline  
Old 12-14-2015, 10:23 PM   #65
3 Rivet Member
 
Caroyl's Avatar
 
1964 26' Overlander
Warner Robins , Georgia
Join Date: Oct 2015
Posts: 168
I've seen some talk here since starting the search for our vintage AS. We recently bought a 1964 Overlander LY which will need new tires and aluminum wheels before the full renovation is finished and she is ready to roll. We are thinking we'll go with 16" wheels and LT tires, but I have no idea what the specs to shop for. Also, I'm seeing the nearly new 15" sets being sold on the forums and that's tempting. Of course I can't buy new or used unless I know what we have/need. Anyone know what size/configuration is used in the '64?


Sent from my iPhone using Airstream Forums
__________________
Caroyl & Tim
1964 Overlander "Gracie"
WBCCI # 31088
2009 F-150 "Big Red"
Caroyl is online now  
Old 12-15-2015, 02:43 AM   #66
Rivet Master
 
switz's Avatar

 
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction , Arizona
Join Date: Sep 2012
Posts: 4,799
Images: 8
I forgot to mention that the scaled weight just off the production line is printed on the white label on the street side front panel of the trailer along with the tire data and specifications and VIN. The net payload based upon the weight just read also generates the yellow tag number seen on the screen door.

If the 16" tire option was ordered, that conversion is done at the service center after coming off the line. That means the weights were determined with the lighter GYM ST tire and not the heavier 16" Michelins. So the weigh tag is immediately incorrect for the presumed empty weight with larger tires.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC

TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell

2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels
switz is offline  
Old 12-16-2015, 03:41 PM   #67
Rivet Master
Commercial Member
 
Ravenna , Ohio
Join Date: Apr 2012
Posts: 690
Quote:
Originally Posted by Bill M. View Post
The Michelins mentioned at the start of the thread are a p- tire. They would have to be a LT tire to be a load range C. Yet the maximum inflation pressure for the XL is 50 lbs, the same as for load range C. Michelin used to make a 15" LT load range C and the 15" XL tire. They dropped the LT load range C.
This points out the importance of paying attention to the complete tire size and Load Range.
Most XL P type tires are rated for 41 psi
P Type tires come in Standard load (no mark or letter) and Extra Load or XL
LT tires do not need to be de-rated as P type tires do when on a TT and LT tires would normally have Load Range C, D or E although there are some exceptions.

Remember that just because one tire company makes a "non-standard" tire does not mean other brand or even other design tires from the same company would have the same load or inflation capability.

Check out THIS post if you want to see why the complete size can make a lot of difference.
__________________
Tireman9 is offline  
Old 12-31-2015, 12:01 PM   #68
Top
Always learning
 
Top's Avatar
 
1972 29' Ambassador
1962 19' Globetrotter
1951 21' Flying Cloud
Central , Texas
Join Date: Oct 2010
Posts: 2,779
Images: 24
Blog Entries: 2
Send a message via Yahoo to Top
The new Michelin Defender LTX M/S 235/70/15 109T XL is a "Euro-metric" sized tire, not the "P" designation tire it replaced. None of the new Michelin Defender LTX M/S tires are "P" tires. Kind of strange to me, but I guess this is a new trend in tires. GoodYear Wrangler All Terrain Adventure tires are designated the same way.

From Tire Rack-
"If there isn't a letter preceding the three-digit numeric portion of a tire size, it signifies the tire is a "Metric" size (also called "Euro-metric" because these sizes originated in Europe). While Metric tire sizes are primarily used on European cars, they are also used on vans and sport utility vehicles. Euro-metric sizes are dimensionally equivalent to P-metric sizes, but typically differ subtly in load carrying capabilities."

I'm not sure what difference it makes, but the absence of the "P" on the sidewall may make a few Airstreamers a bit more comfortable using this tire.
__________________
Lance

Work is never done, so take time to play!
Top is offline  
Old 12-31-2015, 12:07 PM   #69
Rivet Master
 
Currently Looking...
Nowhere , Somewhere
Join Date: Jul 2005
Posts: 6,421
Blog Entries: 2
Seems like I read somewhere that if the tire had LT at the end of the designation it could be used as a trailer tire. As opposed to LT being in the front. Anyone of the experts care to comment? Just curious.
__________________
avionstream is offline  
Old 12-31-2015, 01:12 PM   #70
Rivet Slave
 
Rocinante's Avatar

 
2014 27' FB International
Western WA , Washington
Join Date: Dec 2013
Posts: 3,432
Blog Entries: 49
This post from Tireman9 on his blog may be of interest regarding what LT in a tire name means - whether it's a "design name" or a size/load designation. RV Tire Safety: LT

Since we're not tire people, we're guessing the "LT" in this tire is a "design name." We think that means we'd need to do the "10% de-rating" thing to calculate a safe load for these tires. e.g. the "109" in this tire means it is rated at 2271 lb for cars, SUV's etc., and after the 10% de-rating exercise a safe trailer load for this new tire would come in at 2044.

The max gross weight for our 27FB trailer is 7600 and 4 of these tires would handle a total load of 8176. That's a 7.5% safety factor for a maximally loaded trailer, assuming all tires are carrying the same weight. (BTW, we know it will *never* be true that all tires are carrying the same weight, and that our trailer fully rigged for camping comes in around 6,500.) So, we feel pretty comfortable, based on the numbers, with the idea that these new tires could work well for our trailer on our existing 15" wheels.

Come spring, when these tires are scheduled to be available, we'll probably give them a try. We'd be hoping to get our 2 -3 year old GYMs off the trailer before we have an incident, without tossing a perfectly good and handsome set of wheels.
__________________

__________________
Rocinante is our 2014 International Signature 27FB
(Named for John Steinbeck's camper from "Travels With Charley")


Rocinante is offline  
Closed Thread


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
Michelin LTX M/S versus Michelin LTX M/S 2 - Which Would You Choose? doutterson Tires 40 10-23-2016 10:08 PM
Michelin LTX MS2 235/75/15 XL Top Tires 64 07-20-2016 08:32 PM
Michelin LTX LT 235/75-15 JakeSpoon Tires 63 07-03-2015 05:18 PM
Michelin LTX 235/75R15 XL Upgrade? switz Tires 234 06-28-2014 04:46 PM
Michelin 235/75R15 LTX M/S vs Marathon ST225/75r15 EXCEL88 Tires 3 06-16-2008 08:41 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.