View Full Version : Replacement Tires

04-12-2016, 05:42 AM
2009 Montana 5th wheel. The goodyear marathon tires in my opinion are junk. I am very religious about tire pressures and avoiding road hazards but I am on my third set of these and my last set. I woulsd be reluctant to use these on my riding mower. Have any of you had any experiences with the Maxxis Tire. Seeing that all ST tires are being made in China I don't think the brand makes much of a difference. I would appreciate any and all of your inputs. I don't think that going to a LT tire is a safe move. Thanks

04-12-2016, 05:56 AM
Knowing your model number would assist in making recommendations. The bigger Montana's are not suitable for most of the LT rated tires, smaller ones have had success reported many times on the forum.

04-12-2016, 06:12 AM
I replaced the tires on my previous Sprinter Travel Trailer with Maxxis Gremax ST 225/75 R15s. I was very happy with the performance and longevity of the Maxxis tires. However, my Sprinter was about 1/2 the weight of my current Montana.
I chose the Sailun S637 ST 235/80 R16 for my recent Montana Tire replacement (last week). The Sailun weight rating was 4080# with 14 ply and 110 PSI max cold tire pressure (compared to Maxis 8008 ST 235/80 R16 Weight rating of 3420#/10Ply/80 PSI). Sailuns were about half the price of the Goodyear 614s for me.
Good luck with your research and decision.

04-12-2016, 06:19 AM
What Bingo said. Many of us with lighter trailers have gone to LTs with great results. But E rated LTs are rated for lower loads than E rated STs so you need know your weights. Many with heavier trailers have gone to Goodyear G614s, if they have 110 psi rated wheels.

Others will come in about good ST replacements.

04-12-2016, 11:43 AM
You are correct all ST tires are junk and you need to replace them with LT or G tires. LT tires are rated for 106 MPH. I doubt you will be pulling your camper that fast. I have said several times tires have been one of the main topics here since 2004. I don't remember anyone having trouble with any tires except the ST tires. We have had too many people and I have seen too many campers with blown ST tires with the side of their camper tore up. Run ST tires at your own risk because they will get you if you use them on your heavy Montana.

04-12-2016, 12:48 PM
Had 614's for 5 years and over 45,000 miles and they still look perfect.

04-13-2016, 05:15 AM
We ran the original GY Marathons about 25,000 miles with no problems but they were ready for the junk pile when we put the Sailuns on. Don't agree that light truck tires are suitable for a double or triple axle trailer. Truck tires are not made to withstand side forces when a multi axle trailer is turned short. I have seen way too many gooseneck stock trailers with one or more blown tires and a load of cattle or hogs sitting by the side of the road. There is a reason tires are made specifically for trailer use.

04-13-2016, 10:47 AM
Stay tuned and you will see which tires the members here are having problems with. Tire problems will be a constant topic this summer.

04-13-2016, 02:09 PM
I've seen lots of positive posts here and on other forums about Sailun tires.

04-13-2016, 03:25 PM
Had the Sailun S637's installed last August and couldn't be happier. The step up from 235/80/16 to 235/85/16 didn't have any negative affects. Actually tows much smoother with the new tires since we don't get as much "bounce" or "wash" with the 14 ply tires like we did with the GY Marabombs. Tim

04-14-2016, 01:54 AM
We've had Transforce LTs on our 38' 3665RE for three years and 30k+ miles with no problems at all. The reason LTs have a lower weight rating is that there's a for real safety factor, and they're rated for much higher speeds. There's no safety factor and 60 to 65 mph speed limit on ST tires - a joke at best. Since I'm a firm believer in not keeping tires past 6 years (no matter what brand or rating they are), I won't be having to take out a loan to replace them either.

04-14-2016, 02:53 AM
Right on Walt. There a a difference in the way a tire is build to run 65 verses 106 MPH.

04-22-2016, 12:13 PM
This past year I bought a Montana High Country 305rl. It came with off brand chinese tires. I only have 7,000 miles on the unit, but one of the tires keeps losing air. The unit is in the shop (again) for warranty repairs, and I have decided to replace all of the tires. I was going to put Goodyear Marathons on it until I read all the bad posts on them. There is a lot of good comments on Sailun tires. I checked the internet, and could only find dealers in Canada. Anyone know if they have dealers in the lower 48?

04-22-2016, 04:39 PM
There are many tire retailers that carry Sailuns. We were on the road so I called or emailed Sailun customer service and got the nearest retailer.

Dam Worker
04-22-2016, 05:11 PM
In Washington state Big O tires in the Seattle area sell them. I also know that you can purchase them from Simple Tire online for 129.00 plus taxes, shipping etc. Trailer Tires and Wheels in Ohio sells them online also. I purchased mine from them because they had great customer service. Just got delivered to my house yesterday. Just need to have them put on my rims and than get rid of the Trail Kings. The Sailun's are really heavy duty with 14ply 110 lb pressure and I believe a 75 MPH speed rating. I think the Goodyeartires are rated the same.

Tom Marty

04-24-2016, 05:50 AM
Thanks for the input. For some reason, google sent me to the Canadian website. Looks like the on-line Simple Tire is the way to go. My tires are 235/80R16, and I was told that I could only get 235/85R16's, and that it would be fine on my High Country 305rl. Can anyone comment on this?

Dam Worker
04-24-2016, 08:42 AM
As far as I know Simple Tire only carries the 235 85R 16's. Measure between your tires and check for clearance on the top. The difference is only .9" between the 235 80r 16's and the 235 85R 16's. Either one would have worked fine on my 3160 Montana. If you want the size that came standard look up Trailer Tires and Wheels. They carry the 235 80R 16's. They cost a bit more than at simple tire but great customer service. They are out of Ohio and can do a bit better on the price if they do not have to ship to the west coast.

I had Costco remove the old tires and mount and balance the new ones. The old tire and rim probably weighed less than the new Sailun's without a rim.

Tom Marty

Titan Guy
05-16-2016, 01:27 AM
I have sold 100's of Sailun Tires and have yet to see a single complaint.
On most trailers you want max air pressure that the tire & wheel will handle. Reason is you want reserve load capacity of 20%+ on your trailer tires, just like you have on your pickup, passenger and SUV tires.
A load range G with a 3,750 load capacity would have 20% reserve capacity with a tire load of 3,000 lbs.
In the last 6 months Sailun change the rating on their 235/85R16 G S637 to an ST tire with a 65 mph speed restriction. The tire did not change just the class from LT to ST resulting in an increase in rated load capacity to 4,080 lbs. at 110 psi @ 65 mph.

05-16-2016, 07:00 AM
It sure would be nice if Sailun would get their web site right. It currently shows both the ST 80 and 85 series S637 as having the 4080 lb weight rating, but still shows them as having the 'L' speed rating, which is 75 mph. http://www.sailuntires.ca/MRT/S637.html Also at http://www.gosailun.com/MRT/Tire/S637T ,and at the product sheet link on both pages.

05-16-2016, 11:03 AM
I decided to go with a LT tire. I had great service with LT tires on my last unit. Also, my High Country is not as big and is lighter the ones you all have. I replaced the cheap ones that came on the unit with Michelin XPS Ribs. I just put 1200 miles on them with no trouble at all. I'll keep my fingers crossed. Now if I could just get this 5er to work so well.

05-16-2016, 01:36 PM
If your weights are right, you should be very happy with the Ribs. I have something over 20,000 miles on mine and can hardly see any wear at all. And they ride great. Gonna have to replace due to age rather than wear.