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Old 05-13-2021, 08:16 AM   #1
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Power King Blowmax (Towmax) ST tires

I'LL SAY IT BEFORE YOU GUYS DO..."OH NO, ANOTHER TIRE POST."
Just had my LAST encounter with Power King "Blow"max ST 235/85R16 E (10 ply) rated tires. I highly respect my tire guy who talked me into putting on a second set of Towmax 3rd quarter of 2018 after my first set died literally at the same time. I lost 3 of the first set within weeks of each other on short 50 mile trips. Granted, that set was going on 4 years old and I understand the life expectancy is 3-4 years...if you are lucky. So, I chalked the failures up to age and at the recommendation of my tire guy put on a second set of Towmax August of 2018. The date codes on the tires were "1818" and "2918". My 5ver sits in the barn out of UV rays and I only use it approximately 5-6 weeks a year at the lake (100 mile round trip) and 1.5 weeks at the coast annually (400 mile round trip). I'm anal about checking tire pressures and run with empty tanks. My dry trailer weight per the specs is 10983 (actually 10140 as weighed by DMV). I'm guessing I have 500 to 1000lbs of stuff loaded in the RV. So, E rated tires should carry the load handily. And even though I'm pulling it with a tuned Duramax, I pull at 65mph or below.
My tire guy is scratching his head just like me and says that my tires aged out this year at 3 years old and thats why I blew one a few weeks ago. He now wants me to go to 14ply Sailun tires on the 5ver. I'm in full agreement to go away from Towmax and to a 12 or 14 ply tire. I said all this to ask for any comments on Sailun tires and putting 14 ply tires with very hard sidewalls under my 5ver. (The other thing to consider is that Towmax and Sailun are owned by TBC...argghh)
Been RVing for 35 years and know all the ins and outs of towing and maintaining. But this tire thing is crazy. I've become paranoid of blowouts.
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Old 05-13-2021, 08:59 AM   #2
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Quote:
Originally Posted by kerrlakelover View Post
I'LL SAY IT BEFORE YOU GUYS DO..."OH NO, ANOTHER TIRE POST."
Just had my LAST encounter with Power King "Blow"max ST 235/85R16 E (10 ply) rated tires. I highly respect my tire guy who talked me into putting on a second set of Towmax 3rd quarter of 2018 after my first set died literally at the same time. I lost 3 of the first set within weeks of each other on short 50 mile trips. Granted, that set was going on 4 years old and I understand the life expectancy is 3-4 years...if you are lucky. So, I chalked the failures up to age and at the recommendation of my tire guy put on a second set of Towmax August of 2018. The date codes on the tires were "1818" and "2918". My 5ver sits in the barn out of UV rays and I only use it approximately 5-6 weeks a year at the lake (100 mile round trip) and 1.5 weeks at the coast annually (400 mile round trip). I'm anal about checking tire pressures and run with empty tanks. My dry trailer weight per the specs is 10983 (actually 10140 as weighed by DMV). I'm guessing I have 500 to 1000lbs of stuff loaded in the RV. So, E rated tires should carry the load handily. And even though I'm pulling it with a tuned Duramax, I pull at 65mph or below.
My tire guy is scratching his head just like me and says that my tires aged out this year at 3 years old and thats why I blew one a few weeks ago. He now wants me to go to 14ply Sailun tires on the 5ver. I'm in full agreement to go away from Towmax and to a 12 or 14 ply tire. I said all this to ask for any comments on Sailun tires and putting 14 ply tires with very hard sidewalls under my 5ver. (The other thing to consider is that Towmax and Sailun are owned by TBC...argghh)
Been RVing for 35 years and know all the ins and outs of towing and maintaining. But this tire thing is crazy. I've become paranoid of blowouts.
Switch to the Sailuns they are agreat tire. My load range E OEM tires lasted two years and found cord separation while it sit in the driveway. Change to Sailuns. I have over 12,000 miles and four years and holding up great. I thought they would ride rough but I think our 11,000 pound 5th wheel rides better and toes better. I don't worry about blow outs now.
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Old 05-13-2021, 09:05 AM   #3
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i have CONSTANCE, E tires on my toy hauler , came on it . 5 years still perfect. havent checked on where they are manufactured but i will find them when i need them.
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Old 05-13-2021, 09:09 AM   #4
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I went with Goodyear G614 RST235/85/R16 tires for my Cedar Creek. These replaced the WESTLAKE tires that came stock on the trailer. The WESTLAKE tires lasted 5 years without any issues, they just aged out. The Discount Tires store could not get the WESTLAKE Tires in time for my needs so, I went with the Goodyear tires. They were about $450 out the door with mounting, balancing, taxes and the tire replacement certificate

Just another tire option to look at.
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Old 05-13-2021, 09:29 AM   #5
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Originally Posted by Thomas ho View Post
i have CONSTANCE, E tires on my toy hauler , came on it . 5 years still perfect. havent checked on where they are manufactured but i will find them when i need them.
Could you tell us more about these CONSTANCE tires you mention?

I know of Constancy tires and Contender tires (both made in China) but nothing on CONSTANCE tires.
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Old 05-13-2021, 09:36 AM   #6
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450.00 for 2 .correct! jim 34
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Old 05-13-2021, 09:45 AM   #7
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I don't think your tire guy knows much about cheap Chinese tires. Regardless of who ultimately owns Sailun, they've proven over and over again to provide the best tire service for heavy FWs.
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Old 05-13-2021, 09:57 AM   #8
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This thread has regurgitated some BAD memories for me!

On our prior 5er, it had PowerKing TowMax on them and literally every year I would wind up replacing 2 or 3 tires due to tread separation, bubbles, etc. On 2 occasions, blowouts did major damage too requiring insurance claims being filed.

We bought that 5er in 2009 and until we replaced those crap tires with Goodyear G614s in June of 2016, we replaced 16 of those TowMax tires at $111 each (yes I'm apparently a slow learner). Never an issue with the G614 tires.

Fast forward to 2019.....bought a new 5er and the tires, albeit not TowMax were China made and they were immediately removed and replaced with G614s.

Guess I have to now go back to therapy....
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Old 05-13-2021, 01:27 PM   #9
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i ran power king for years with out any troubles
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Old 05-13-2021, 03:25 PM   #10
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Sailuns have been on for two seasons. Been to Florida and the east coast both years.
TPS sensors used and they are always aired up. Can't remember the last time I had to add air.
They still look new.
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Old 05-13-2021, 03:51 PM   #11
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I have to agree my Sailuns have been doing great and look great after 3 years. Feel comfortable with load range G instead of E .
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Old 05-13-2021, 04:23 PM   #12
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I'll throw my hat in the ring here to ditch the Towmax tires.
I had these on my boat trailer (single axle, 3500 lb boat, E rated tires, same EXACT tire as our Puma came with). I had 2 blowouts within 5 days (maybe 250 miles) on tires that were 26 months old by date code. Unfortunately, I had no choice to replace those last summer with the same crap Towmax tires (literally nothing else in stock at the time I needed them).

This spring, before I had an issue on my 30 month old date coded Towmax tires on my camper, I ditched them for E rated Carlisle tires. I have 1 trip, and only 100 miles on the Carlisle's, but read this forum for others that have had great luck with them.

Not sure if you can get them in your size or not, but I really like the Carlisle's thus far. 5 of them delivered to my door, mounted and balanced was under $500.
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Old 05-13-2021, 04:30 PM   #13
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Thanks for all the good info! This sounds like a novice question, but for you guys who are now running the Sailuns was there any discussion/warning from your tire guy about the life expectancy of the Sailuns...ie 3-4 years like most other trailer tires? I've never worn out a set of tires on my motorhomes or 5vrs. They always age out or blowout....yack yack yack.
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Old 05-13-2021, 05:00 PM   #14
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Quote:
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450.00 for 2 .correct! jim 34
No that is per tire.
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Old 05-13-2021, 05:13 PM   #15
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My Sailuns will be 5 years old this September. Never any problems, lots of tread, and have never lost any air. Breaks my heart that they will soon age out and will have to be replaced. Without question, Sailuns will be my next purchase.
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Old 05-13-2021, 05:56 PM   #16
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One thing to check is the speed rating. Bette tires are rated t 88 mph. Even if you never drive close to that speed, the extra rating has kept me from having any issues on all three of my trailers. I was used to having one or two tire failures a year. I even put two spares on my utility trailer, because I had two flats the same day. Since I upgraded the load rating, and speed rating, I haven't had a flat since.
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Old 05-15-2021, 08:33 AM   #17
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Originally Posted by jd4010 View Post
.

Fast forward to 2019.....bought a new 5er and the tires, albeit not TowMax were China made and they were immediately removed and replaced with G614s.

Guess I have to now go back to therapy....
Just a note: Under the RVIA 10% load capacity reserves recommendation, the G614 tires do not qualify for 7# axles.
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Old 05-17-2021, 03:13 PM   #18
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So I ordered the Sailuns today

While I totally understand the value in the Goodyears, I could not justify the cost considering my RVing habits. If I were going fulltime or on a cross country trip in the near future, I would have bit the bullet and gone with the Goodyear. But with the short trips we do and mostly close to home...I just could not spend that kind of money. I received mostly good comments on the Sailuns and Goodyears. Thanks for all your input. It made all the difference.
Added bonus***** (hahaha)
When I pulled the "Blow"max off today, I found a tire that might have exploded in my hands....not literally...but maybe. I'm attaching a pic of the tire. It is so deformed that I'm surprised someone did not stop me going down the road as it had to have been wobbling. As I said, these tires have always been out of the sun except while camping and has a mfg date of "2018" (20th week of 2018). That's almost 36 months to the week and it is junk. I was going to give these old tires to a farmer friend of mine to use on his farm trailers...but I'm afraid to now that I've see this one. THANKS AGAIN FOR ALL YOUR COMMENTS! HAPPY CAMPING!
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Old 05-17-2021, 04:32 PM   #19
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looks like there was torque on tire when you backed in a tight drive , and you didnt pull forward , then back . trailer sat a period of time and it warped the tire.possibly setting the steel bands in a curve.
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Old 05-17-2021, 05:22 PM   #20
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That is a tread separation in the making. Typical of those tires.
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