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Old 11-13-2014, 12:41 PM   #15
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So since they are newer tires am I being paranoid changing them out? We plan on heading down to Florida in a few weeks.
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Old 11-13-2014, 01:30 PM   #16
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We had Goodyear 614 G's on our 32' New Horizons 5th wheel. No blowouts or other tire problems. In fact, twice after bearing failures, tow companies chained up one axle and we were forced to drive about 35 miles on three tires! Yeah, slow speed with CHP and tow truck escort.

For me, that attests to the quality of the Goodyear 614's.

Drive safely, have fun!
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Old 11-13-2014, 03:29 PM   #17
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Originally Posted by Jhuff8181 View Post
I currently have Tow Max tires on my new 15,500 pound fifth wheel. They are 23585r16's. There are two axles rated at 7000 pounds. So I need tires rated for at least 3500 pounds. The only ones I've found are Goodyear G614's. Are there any other reliable options?

If you do have the ST235/85R16E Towmax tires they are rated at 3640#.

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Old 11-13-2014, 04:08 PM   #18
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If you do have the ST235/85R16E Towmax tires they are rated at 3640#.

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I do but they seem to have a bad reputation.

John
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Old 11-13-2014, 04:57 PM   #19
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I was the same way, thinking the tires that came on the rig were adequate, UNTIL I started reading threads about Tow Max tires. I finally became a believer, spending around $750.00 for four new Sailun S637 tires. When I took the rig to Big O tire the mechanic pointed out that one of the tires had already separated and I was just one more trip away from a disaster. I now have piece of mind on my less than one year old rig.
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Old 11-14-2014, 05:40 AM   #20
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Thank you everyone for your input. Several of you have recommended Sailun 637's. Here's my question. They have a single rating of 3750 @110psi but a double rating of 3415 @ 110psi. My rims are rated at 110psi so I'm good there but my rig has a GVWR of 15,500lbs and two axles rated at 7000lbs each. I know that my tow vehicle carries about 20% of the weight. So each tire (if my fiver is loaded equally) will carry about 3100lbs. So am I good using these tires?
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Old 11-14-2014, 07:43 AM   #21
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Thank you everyone for your input. Several of you have recommended Sailun 637's. Here's my question. They have a single rating of 3750 @110psi but a double rating of 3415 @ 110psi. My rims are rated at 110psi so I'm good there but my rig has a GVWR of 15,500lbs and two axles rated at 7000lbs each. I know that my tow vehicle carries about 20% of the weight. So each tire (if my fiver is loaded equally) will carry about 3100lbs. So am I good using these tires?
If your tires are loaded equally, you should be OK, but very few 5th wheels are loaded evenly. Most have more slides (including the kitchen) on the street side, so that side will likely be several hundred pounds heavier than the door side. Also, if you're towing nose high, which frequently happens with 4WD trucks, the rear axle will carry more weight than the front.
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Old 11-14-2014, 10:11 PM   #22
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You are a-ok. The rating of the tires is more than the axles. Plus, you get a 75mph rating. The tow max are like bicycle tires compared to the Sailuns.
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Old 11-14-2014, 10:37 PM   #23
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Originally Posted by Jhuff8181 View Post
Thank you everyone for your input. Several of you have recommended Sailun 637's. Here's my question. They have a single rating of 3750 @110psi but a double rating of 3415 @ 110psi. My rims are rated at 110psi so I'm good there but my rig has a GVWR of 15,500lbs and two axles rated at 7000lbs each. I know that my tow vehicle carries about 20% of the weight. So each tire (if my fiver is loaded equally) will carry about 3100lbs. So am I good using these tires?
Yes!

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Old 11-15-2014, 09:37 AM   #24
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Am I just being paranoid putting out $2000 to replace brand new tires? I know a lot of people post about their problems with Towmax tires but obviously no one posts about the problems they don't have.

This is what I believe is the date code on the tires DOT ADB2 GPB 2314. How can I tell when these were made?
Okay; here you are. I ran 10,000 miles without a problem with the Towmax tires. At that point I lost my nerve, went out and bought a set of Maxxis m8008 ST tires and have been running on them until we traded the old BigHorn in. The reason I bought the Maxxis tires were that they have nothing negative posted that I could find; and I figured that I could run them three years, turn around and buy another set at that time and still have less that the price of one set of Goodyear G614's. The Maxxis tires purchased from Discount Tire served us well. The new Trilogy 5'er we have purchased has Goodyear's on it, for which I'm thankful.
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Old 11-15-2014, 09:42 AM   #25
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jhuff,
Don't confuse dual (double) ratings with tandem ratings--the lower dual ratings are for pickups/trucks that run tires side x side. As Fast Eagle just said--the Sailuns will work just fine.
Joe
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Old 11-16-2014, 06:31 AM   #26
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I was reading an older thread on tires and all the comments were on how well Maxxis tires performed....now on this thread all I read is how good Sailun and GY perform...Kind of difficult to figure which are the best......that's before talking about ST versus LT.....
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Old 11-16-2014, 07:33 AM   #27
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I ran my Towmax tires for 5000 miles before the first one blew,



It damaged the body work, fender skirt, and rim. Repair estimate = $1000

I decided to replace all the tires. One of them I pulled off showed signs of separation and could have blown any time.





Even the good tires showed uneven wear - as though they had been under inflated. FWIW, I was very careful about keeping the tires inflated to 80 pounds.

My trailer traveled at ~14,000 pounds. The hitch weight was ~2500 pounds. Weight on the tires was 11,500 pounds. The tires had a 3500 pound rating, so I was well under limit (11,500/4 = 2875).

My conclusion was that there was a quality issue with the tires. They would not carry the weight that was listed on the sidewalls.

I switched to Hancock LT7.50x16 tires. They cost ~$190 online. The rating on these tires is #3300, they are load range G, they hold 105 pounds of air. I also added a tire pressure monitoring system. After almost 10,000 miles since the change, I am starting to feel a little more relaxed while driving.

Here are some things I have learned.

I heard a pop when my tire blew, but I never felt a change in the way my rig was driving (I saw pieces flying off in the mirror - noticed the drivers behind me slowing down)

The air supports the weight, the tire hold the air.

LT tires are rated more conservatively than ST tires to allow for driving forces (when used that way).

LT tires are trailer rated.

ST tires actually have thinner sidewalls than LT tires.

From the tire pressure monitoring system, I have learned that the tire pressure varies greatly by temperature.

All tires should receive a pre-trip inspection for uneven tread wear, buldges, cracks, etc. While you are looking at the tires, check the springs and spring hangers too.
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Old 11-16-2014, 07:43 PM   #28
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I was reading an older thread on tires and all the comments were on how well Maxxis tires performed....now on this thread all I read is how good Sailun and GY perform...Kind of difficult to figure which are the best......that's before talking about ST versus LT.....
A google on the subject will give you a better overall picture than just one RV website. A google give you input from all the different trailer types and including RVs.

We've had 23 Maxxis owners on just RV.Net RV and Camping Forum ? RV, Trailer, Camper, Motorhome, Camping and Campground Information trailering forums who have had issues with the Maxxis ST8008 trailer tires. I see similar Maxxis issues on other trailering websites (RV and non RVs).

Any ST tire brand doesn't compare in reliability/long term service with a all steel carcass commercial grade LT tire such as the Sailuns S637.

I would say the Maxxis ST8008 is the most popular of the ST tires.....at this time.
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