Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

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

Reply
 
Thread Tools Display Modes
 
Old 02-15-2016, 04:23 PM   #21
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,052
Still loving mine, unless I have to remove them (they weigh a ton). Turns out I should have gone with the 80-series, instead of 85s... Just haven't seen them advertised..

I see that they are warrantied by TBC corp - which owns NTB.. Basically a nationwide US-based company.
dcg9381 is offline   Reply With Quote
Old 02-15-2016, 07:25 PM   #22
sw342
Permanent User Ban
 
Join Date: Jul 2014
Location: Folsom, Ca
Posts: 204
I love those tires. Anyone still running ST tires on a heavy trailer when there are other options available is just pushing their luck.
sw342 is offline   Reply With Quote
Old 02-16-2016, 01:54 PM   #23
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 3,031
A lot of the Forest River RV trailer line-up for this year are using OEM tires from Westlake. Here are a couple of pictures I took of ST235/85R16G tires on a FR fiver with 7000# GAWR axles.

Westlake also manufacturer’s the LT235/85R16G tires.

Like all steel cased tires of this size the 16x6.5” rim is standard. Both sizes have an Inflation pressure of 110 PSI to get to the tire’s maximum load capacity.

Note that the OEM provider has serviced the tire in the picture with 100% nitrogen as identified by the green valve cover.

The pictures were taken of a spare I found in the forward cargo compartment. The tires on the trailer had aluminum rims.

All new ST tires this year will have speed ratings. These have a letter L = 75 MPH.

http://www.irv2.com/photopost/showfull.php?photo=29711

http://www.irv2.com/photopost/showfull.php?photo=29709
CWtheMan is offline   Reply With Quote
Old 02-16-2016, 03:30 PM   #24
NotyetMHCowner
Senior Member
 
Join Date: Oct 2014
Location: Clinton, Tn
Posts: 270
I think my rims are only 6", but it will just have to work for now. I will probably run less than the maximum 110psi, but not sure what pressure as of yet.
__________________
2015 Montana High Country 305RL
Previous campers:
2008 Rockwood Ultra Lite 2603
1998 Coleman Grandview pop-up with slide

Trucks:
2006 Ford F350 CC, SB, DRW, 4x4
1992 Ford F150 SC, SB, 4x4
NotyetMHCowner is offline   Reply With Quote
Old 02-17-2016, 12:44 PM   #25
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 3,031
Just a couple of notes.

If you call a Goodyear light truck tire representative they might say another rim width will work for the G614 tires. If you email them they will say only the 6.5" wide rim is appropriate. I've done both. They will only put 6.5" in writing.

Tire industry standards for replacement tires will tell you to use the amount of tire inflation pressure necessary to provide, at the minimum, the load capacity of the Original Equipment tires listed on the federal certification label. Anything less than that would be considered under inflation.
CWtheMan is offline   Reply With Quote
Old 02-20-2016, 08:13 AM   #26
Barbell
Senior Member
 
Join Date: Jun 2013
Location: Arizona
Posts: 375
We put on the Sailuns last summer after seeing how close to failure the original Goodyear Marathons were. Never had a problem with the GYs but maybe it was just luck. Anyway, we have pulled the rig a little over 6000 miles with the Sailuns and I think it pulls easier with the higher inflation level. The main thing I like is that they show no wear at all so far and they hold air pressure right on the money. I check the air and lugs bolts before each departure and even though I carry an air compressor, I have not had to use it so far since putting the Sailuns on. Ours came from Big O Tire so I will look to them if there is ever a problem.
Barbell is offline   Reply With Quote
Old 03-02-2016, 05:48 PM   #27
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Quote:
Originally Posted by sw342 View Post
I love those tires. Anyone still running ST tires on a heavy trailer when there are other options available is just pushing their luck.
Yes with 10000 miles on them and starting to show wear dated 6/14. I'm going with LT G tire from Good year before my next trip to Big Bend texas next month.
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide is offline   Reply With Quote
Old 03-02-2016, 05:59 PM   #28
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Quote:
Originally Posted by dcg9381 View Post
Interesting. I've never found anyone selling the 235/80R16 size, even though that's the factory size of many trailers. Someone post if you manage to find a vendor selling them in that size.

Be aware, if you move up to 235/85R16, you need to have adequate top-of-tire to deck clearance. The diameter change is only 1", but on trailers like the Carbon, the deck-to-tire clearance is lower than most. The result on our trailer is that they're closer to the deck than I'd like - I'm probably going to have to adjust height to be 100% sure we're OK.

I love these tires, they weigh almost twice what the factory tires do...
Big O dealer said 1/2 inch higher because i'm running the 80 /16 and will need to go with 85/16. with G LT tires.
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide is offline   Reply With Quote
Old 03-03-2016, 09:07 AM   #29
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 3,031
Quote:
Originally Posted by dcg9381 View Post
Still loving mine, unless I have to remove them (they weigh a ton). Turns out I should have gone with the 80-series, instead of 85s... Just haven't seen them advertised..

I see that they are warrantied by TBC corp - which owns NTB.. Basically a nationwide US-based company.
Guess who the big owner is? It's in the ref..

http://sumitomotire.com/news.aspx
CWtheMan is offline   Reply With Quote
Old 03-04-2016, 07:15 AM   #30
williams19740
Junior Member
 
Join Date: Feb 2011
Location: new jersey
Posts: 2
S

We purchased these G load tire for our 3750FL and could not be happier. Towed back from Florida(had the tires shipped down there) and they performed perfect. Tire pressure monitor showed 110 degrees towing on highway at 75 in 90+ degree heat. If your gonna run a tire monitor i would highly recommend using Ford Dually OEM steel vavle stems. They have worked amazing. I broke 2 other stems from other bolt in types and found the Ford OEM for dually work excellent.
williams19740 is offline   Reply With Quote
Old 03-04-2016, 07:45 AM   #31
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,052
Quote:
Originally Posted by CWtheMan View Post
Guess who the big owner is? It's in the ref..
I think you're saying tht Sumitomo is the actual owner, as they bought TBC in 2005. I didn't know that.

TBC is more commonly known as:
Carroll Tire Company
Tire Kingdom
National Tire & Battery (NTB)
Treadways



In terms of actual diameter, 235/80 to 235/85 is actually .9 inches. So everything else being the same, you get .45" lift. However, these tires have massive tread depth, it wouldn't surprise me if actual measurements were more significant than that. I assumed that the size difference would be fine, but now I'm looking at lifting my trailer to get back some tire-to-deck clearance....
dcg9381 is offline   Reply With Quote
Old 03-05-2016, 04:51 PM   #32
NotyetMHCowner
Senior Member
 
Join Date: Oct 2014
Location: Clinton, Tn
Posts: 270
Finally got my Sailuns mounted and balanced today. When I bought them, NTB had them in their store for quite some time. They are a little over a year old. They were still the LT variety, and only $83.50. I ordered a fifth tire for the spare and asked at the time if the price would be the same. I was told yes. So when I was at the store today, the tire is an ST tire and came up at $172! After a little arguing, I got it for $83.50, plus I used a $10 off coupon that was attached to my first invoice from buying the first 4. They are beefy and heavy. I dropped the pressure down to 90 psi. Im not sure how much pressure I will end up running. That is like asking what brand truck to buy and which is the best oil to put in it!
__________________
2015 Montana High Country 305RL
Previous campers:
2008 Rockwood Ultra Lite 2603
1998 Coleman Grandview pop-up with slide

Trucks:
2006 Ford F350 CC, SB, DRW, 4x4
1992 Ford F150 SC, SB, 4x4
NotyetMHCowner is offline   Reply With Quote
Old 03-07-2016, 05:37 AM   #33
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Quote:
Originally Posted by dcg9381 View Post
I think you're saying tht Sumitomo is the actual owner, as they bought TBC in 2005. I didn't know that.

TBC is more commonly known as:
Carroll Tire Company
Tire Kingdom
National Tire & Battery (NTB)
Treadways



In terms of actual diameter, 235/80 to 235/85 is actually .9 inches. So everything else being the same, you get .45" lift. However, these tires have massive tread depth, it wouldn't surprise me if actual measurements were more significant than that. I assumed that the size difference would be fine, but now I'm looking at lifting my trailer to get back some tire-to-deck clearance....
That is correct after talking with a dealer from discount tires. Im pushing 10000 miles on my trailer kings . Im now looking for Sailun 235 /80 or 85 16 . This has been a good open thread .
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide is offline   Reply With Quote
Old 03-07-2016, 07:17 AM   #34
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,052
Let me know if you get them in 80-series...
dcg9381 is offline   Reply With Quote
Old 03-07-2016, 08:20 PM   #35
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Big O is 1 1/2 mile from my dealer and they only have the 85 in the G ply. they quoted me 780$ out the door. that tire would at the most 6 week dated. I have 5 inch between the tires now , that would put me at 4 inches between the tires mounted on the fifer with the 85. I think that is acceptable.
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide is offline   Reply With Quote
Old 03-08-2016, 07:48 AM   #36
dcg9381
Senior Member
 
Join Date: Jul 2015
Location: Texarkana, TX
Posts: 1,052
Watch the distance to the deck too - that's what got me.
dcg9381 is offline   Reply With Quote
Old 03-08-2016, 07:51 PM   #37
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 3,031
Quote:
Originally Posted by roadglide View Post
Big O is 1 1/2 mile from my dealer and they only have the 85 in the G ply. they quoted me 780$ out the door. that tire would at the most 6 week dated. I have 5 inch between the tires now , that would put me at 4 inches between the tires mounted on the fifer with the 85. I think that is acceptable.
All steel cased tires in your size have a single approved rim width. Look at post #23.

Here is a picture. http://www.irv2.com/photopost/showfull.php?photo=29709
CWtheMan is offline   Reply With Quote
Old 03-12-2016, 07:40 PM   #38
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Quote:
Originally Posted by CWtheMan View Post
All steel cased tires in your size have a single approved rim width. Look at post #23.

Here is a picture. http://www.irv2.com/photopost/showfull.php?photo=29709
I will check that out, it seem that a fifer with 16000 GVW and 7000 lb axles that the rims would be approved for G raited tires.
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide is offline   Reply With Quote
Old 03-13-2016, 10:57 AM   #39
CWtheMan
Senior Member
 
CWtheMan's Avatar
 
Join Date: Feb 2010
Location: Taylors, SC
Posts: 3,031
Quote:
Originally Posted by roadglide View Post
I will check that out, it seem that a fifer with 16000 GVW and 7000 lb axles that the rims would be approved for G raited tires.
I was looking at the Keystone spec page for your trailer and can’t get the numbers to work.

Here is what they have;

GVWR: 16,500#
Cargo: 4,860#
Hitch : 2,780#

To calculate GAWR for two axles you subtract the hitch weight from the GVWR and divide by two (6860#). That is more than the minimum load capacity for the ST235/80R16E tires (3420#)

Does your certification label and cargo capacity figures differ from the ones above?

Is there a notation in your owner’s manual or on any of the tire labeling to inform you to use ST235/80R16E tires with load capacities of 3500# or above? If not and your labeling matches the figures I used above the OE tires fail the axle’s minimum safety requirements the manufacturer has said it passed.

If my info is correct it’s a simple fix for Keystone. All they have to do is lower the cargo capacity and GAWR values and issue an updated federal certification label. They can also say there was a typographical with the published hitch weight and then change it to fit the situation.

There is another way Keystone could have set your trailer’s GAWRs to 7000#. It’s a letter of compliance and they have to send it to NHTSA showing they used those ST tires that are manufactured with load capacities at or above 3500# on the axles. They would also have to provide the consumer (you) with a copy of such communications to add to the vehicle owner’s manual.

Keystone knows all that stuff because they have had a number of certification recalls for similar discrepancies.

But, just maybe, the information on your trailer’s labeling is more accurate than the historical specs.
CWtheMan is offline   Reply With Quote
Old 03-13-2016, 11:24 AM   #40
roadglide
Senior Member
 
roadglide's Avatar
 
Join Date: Apr 2015
Location: nm
Posts: 1,833
Right on with the hitch weight. The fifer has been on the cat scales 3 times . The last trip to Quartzsite loaded with harley and Quad in the garage the was like 11400 on the trailer axles with some fresh water. way under the 14000 lb axles and the 3520 lb load for the tires 14080 new. Tell you the truth. I have 10000 miles on the trailer Kings and they look very good. I'm pulling the trigger on some saline tires tomorrow if big O approves them for my fifer.
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
roadglide 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

» Featured Campgrounds

Reviews provided by

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 08:51 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.