View Full Version : Tire advice needed...long trip planned.

07-11-2016, 12:41 AM
Looking for some good advice if i should buy new tires now or can wait until next year.
Just bought a 2016 3790RD Montana it came with the trailer king tires we have taken 5 trips, the tires have about 1300 miles
we will be taking a 3000 mile vacation in late sept from Oregon to Moab-Grand canyon-Zion and home.
i planned on buying new tires next year.
figured with all the experience on this site it would not hurt to ask

Sailuns S637....cant seem to find them in Oregon...good prices

Maxxis 8008.....can get them in Oregon....good price

Goodyear G614....they are everywere...best of the best...more exp...rebate going on until july 31

i know some will say depends on what you want to spend...would like to go with the sailuns just cant find them in Oregon

i like the idea of 110 psi vs the 80 psi on the maxxis.

comments appreciated....



07-11-2016, 01:58 AM
First and foremost, don't wait. As for which tire, we ordered ours with the G614's. Many good reports on the Sailun's. You could order them online. While you are at it, don't forget TPMS. One of the things about RVing is there is no shortage of things to spend money on.

07-11-2016, 02:01 AM
I see the phrase "china bomb" often but I never really see the cause of why tires actually blow out. I have the same tires on my 2015 3790RD (we love the floor plan) as you do on your 2016. I did a lot of research but never found anything negative with the Road Kings. I'm going to keep running on them and here is why.

I have taken the time to level out the 3790 when I tow so the weight is shared between the axles. I installed Truck Systems TPMS and monitor the pressure and temperature of each tire. I have weighed the trailer/truck combo and clearly see the trailer axles are sharing just under 11,000 pounds of weight, well under their rating.

I'm crossing my fingers hoping I am not making a mistake.

07-11-2016, 02:08 AM
Only experience I have is the original Carlyle's (BOOM!) and the G614s I replaced them with (AHHHH!). Nothing gives me more piece of mind than the G614s. Just get them off after 5 years, no matter how many miles! (BOOM again!)

07-11-2016, 04:26 AM
If you keep the OEM tires, don't hit the road without a good tire pressure monitor. Anyone who has read my posts already knows I'm a 614 fan.

07-11-2016, 04:41 AM
Go check out any of the RV Forums, there are many folks who had the same opinion as you, until their summer plans were ruined when China Bombs blew and did thousands of dollars damage to their RV. Last summer our friends went thru all four tires during our Canadian Maritime trip. Luckily they caught three before exploding, the fourth totally blew apart, but they we very lucky and only lost a small piece for fender skirt.
Your RV and your plans, you have to make the decision, "Do you fell Lucky"

07-11-2016, 04:49 AM
I would not wait until next year. Your OEM tires will give you problems. That might be in the next 50 miles it might be 20000 miles. When they do they could do thousands of dollars in damage. If you can't find the S627s get the G614. At any rate don't get a standard ST tire they are all built too light to be safe on your camper.

07-11-2016, 05:27 AM
Agree, don't wait. It is definitely a roll of the dice. You may make it ok, and you may not. I decided to wait a year before replacing and it almost cost me. Proper inflation, keeping speeds under 65, balancing the weight evenly is all good, but in the end may make no difference with these inferior tires. AND, I probably had fewer than 2000 miles on those Marathons. My Montana is one of the heavier ones, but as a weekend warrior, we travel light. Based on my experience and that of many others, I'd replace them. The peace of mind is priceless. I also suggest a tpms system, whether you make the change or not.

07-11-2016, 06:35 AM
Whatever you do, get rid of the trailer kings

07-11-2016, 06:53 AM
Great advice looking at the sailuns 235 85R16, 110 psi
I assume these would be no problem on my trailer 85 vs 80 and the 110 PSI vs 80 psi
I have heard that the wheels On The Montanas arer 110 PSI I cannot find any identifying marks to confirm that

07-11-2016, 07:18 AM
quote:Originally posted by Jsrore

Great advice looking at the sailuns 235 85R16, 110 psi
I assume these would be no problem on my trailer 85 vs 80 and the 110 PSI vs 80 psi
I have heard that the wheels On The Montanas arer 110 PSI I cannot find any identifying marks to confirm that

On my '10, the PSI rating is stamped on the back side of the rim.
The 85's are all that is available in the G614. That's what we are using without problems. I'm not sure about the Sailuns.

Carl n Susan
07-11-2016, 12:11 PM
While my local Les Schwab stocks Sailuns, and the Sailun people say Les carrys them, the Les web site doesn't know a thing. You might call your local store and ask. In the mean time Simple Tire has them in stock for $124 plus tax plus shipping ($15-$20 to my area - Northern Cali).

Sailun : S637 Regional Trailer
(6 Reviews)
Tire Size: ST235/85R-16
Part Number: 5540992
Service Description: 129 L
Sidewall: TL
Load Range: G (14 Ply)
Features & Benefits
$124.99 per tire

I know you can take them to Les (or have them delivered there) and he will install them for you at a reasonable charge.

All the new Montanas, including the 2016 3790RD come with 110 PSI rated rims. You could have ordered Goodyear G614a on your 3790RD and they would have come on the same rims you have the Trailer Kings on. But to verify, look on the back side of the rim. You should see an embossed weight value of ~3750 lbs. which is equivalent to a 110 PSI rating.

Whether you upgrade to G614s or the Sailun 637 you will be much better off. As I said before (on FB?) it is not a matter of "IF" but rather "WHEN" the Trailer Kings will fail.

Mr Pachu
07-11-2016, 03:33 PM
If it helps you, the rims on my 2015 3790RD are embossed 110PSI on the backside of the spokes.

07-11-2016, 03:34 PM
Just pulled the trigger and bought Sailuns from Les Schawb they said they have been selling them for about 2-3 months and are a VERY popular tire

appreciate all the GREAT advice.

any favorites on a TPMS??? i have been looking at the TST 507....

Mr Pachu
07-11-2016, 03:55 PM
I have the TST 507 and find that mine are right on the pressure with my 2 tire gauges or at least within +/- 1psi.

Goin 4 Broke
07-11-2016, 04:27 PM
Good call on buying the tires AND choosing the Sailuns. I have had mine on now for 7 months and all I can say is PEACE OF MIND! While I still watch the TPMS, I have not worried like I did with the stock tires.

Today's run was 260 miles in +90 degree weather. I was running pretty fast on I-90 (70 to 75 MPH) and the Sailuns did great. I think I will have a long term relationship with Sailun #128521;

07-12-2016, 02:30 AM
The peace of mind that comes with the G614s is worth the money, IMHO.

07-12-2016, 04:00 AM
I have the TST 507. I don't know anything about the others. Mine reads about 4 pounds light but that is no problem. Just make a mental adjustment.

07-12-2016, 07:19 AM
I have the TST 507 also. installed a repeater because of infrequent loss of signal. I like the flow through sensors. Customer service is great from TST...

07-12-2016, 05:05 PM
Just picked up the tires today ...WOW they sure feel and look heavy duty so much different then the trailer kings.

also ordered the the TST507 ....

now i just need some more vacation time

07-12-2016, 05:33 PM
Today, I became a victim of the dreaded blowouts everyone hears about with the Goodyear Marathon tires.
We were just about to get into Birmingham when I hear a cannon go off and saw bits and pieces of the camper going every which way,
I stopped to change the tire when another RVer pulled up behind me with a blowout himself.
We worked as a team and helped each other change the tires.
About a quarter of a mile from where we stopped, I took the exit and topped off the diesel and checked all the tires. Everything looked fine so we were on our merry way again.
I no sooner pulled back onto the interstate when I saw smoke in my side view mirror.
Yep, another blowout within two miles of the first one.
I called Goodyear here in Birmingham that specialized in commercial tires. He happened to have the 614s in stock so he brought one out so I could make it to his shop.
As we were fitting the 614s, we discovered that the cords had separated in the other two tires also.
The tires looked great with pressure in them but once the tire was off the rim you could see the true state of it.
He's working with Goodyear now to see if we can get any compensation since the tires had less than one thousand miles on it.

The Montana is a little banged up but we have talked to the insurance company and they will handle the repairs.

I know I was long winded but it is to make a point. If you have the Marathons on you rig, replace them as soon as possible. Don't think that oh well, that will not happen to me. Because it will happen. Sooner or later so be forewarned

07-12-2016, 07:58 PM
An all-too familiar testimony. Lucky you were able to switch tires on the fly like that. Those that think (like I did) that if they maintain the right pressure in the tire, keep the speed down and balance the weight just right and they'll be ok, are only fooling themselves. I hope your repairs go smoothly and quickly.

07-13-2016, 03:11 AM
I think everybody has a magic formula for using the OEM tires, inflate to 79 1/2 pounds don't drive over 64 MPH don't run over dead opossums. That is all nice trouble is it just doesn't work. The only thing that works is get them off your camper.

Carl n Susan
07-13-2016, 11:32 AM
Hey hybridhauler!!! Hopefully you kept the carcasses of the tires. Goodyear will cover the damage to your RV (and not hit your insurance company) if they see the tires and agree with the tread separation diagnosis. Apparently they are not quick but they do come through as many have discovered.

kenneth e holman
07-23-2016, 12:16 PM
i've had the sailun's on my 16,200 pound 5th wheel since day 1 when i brought the tires to the dealer for install before i drove it off the lot. I researched these tires at length on the internet and couldn't find any bad reviews whatsoever. I have now got over 12,000 miles on these tires and have had excellent results. These tires hold there air very well . Just be sure to run at maximum 110 psi. These tires are speed rated at 75 mph compared to most tires at 65 mph. I drive at 70 mph most of the time but i also have disc brakes for stopping. Good luck.

07-23-2016, 12:29 PM
Carl, the Goodyear dealer in Birmingham is checking to see what kind of compensation they will allow on the old tires. I sent a note to Goodyear customer service but I am yet to hear from them.

I dropped the RV off yesterday so they can get things repaired for me.
Allstate has bent over backwards to ensure we get everything fixed like new.

Do you have a point of contact at Goodyear?

Carl n Susan
07-23-2016, 04:52 PM
quote:Originally posted by hybridhauler

....I sent a note to Goodyear customer service but I am yet to hear from them.

Do you have a point of contact at Goodyear?......

I run G614s so I have never had a problem and had to contact Goodyear. But many here have. You can do a Search here for the contact point. Here is a post made today by captbanjo about his successful contact.