Synergy Tires

[EVMIII]

Anybody have any experience with Synergy all steel tires(SP500). They have steel belted side walls, 14 ply. They are very stout, can get it in a 235/85 R16. Rated at 4000 lbs at 110psi. Local tire shop is putting them on a lot of horse trailers. About $180 a piece mounted. They run them on 18 wheelers and much heavy trailers. Still made in China, but not your standard China Bomb.

[CWtheMan]

Soon you will find them in more recognizable name brands. This (2015) is the year for major changes in ST tire manufacturing and marketing thanks to the threat of tariff increases.

The ST235/85R16G is rated at 4050# @ 110 psi. It may show-up steel cased or polyester cased. All will be rated at 75 MPH or higher, depending on manufacturer. All of them are very similar to the LT235/85R15G steel cased tires for trailer service with a load rating of 3750# at 110 psi. All are very robust (durable).

[dcg9381]

Who sells them? Can you get them in 235/80? I assume they weigh quite a bit if they're actually steel?

[EVMIII]

Who sells them? Can you get them in 235/80? I assume they weigh quite a bit if they're actually steel?

My local PTW carries them, but I would suspect they are available all over. It's technically an ST, it is not available in a 235/80. Just need to be sure you have the clearance and can live with being about a 1/4" taller.

Shipping weight from their website is 62 lbs.

[CWtheMan]

Reference link... Click on the specs.

http://synergytire.com/tires/sp500/

[EVMIII]

CW,

Do you or do you know anybody running these tires? Under the Synergy brand or otherwise? Being so stiff I wonder how they pull? Should roll well, a little concerned about the stiffness bouncing the trailer around.

Bud

[bobbecky]

We upgraded to the Goodyear G614's a couple years ago. These new tires are about the same. The trailer rolls easier, and handles much better. The tires, either at 80 PSI for the LRE tires or 110 PSI for LRG tires, have little effect on the ride. Your suspension is what controls the ride quality.

[gearhead]

My local PTW carries them, but I would suspect they are available all over. It's technically an ST, it is not available in a 235/80. Just need to be sure you have the clearance and can live with being about a 1/4" taller.

Shipping weight from their website is 62 lbs.

What's a "PTW"?

[dcg9381]

My local PTW carries them, but I would suspect they are available all over. It's technically an ST, it is not available in a 235/80. Just need to be sure you have the clearance and can live with being about a 1/4" taller.

I can tell you that on the Saulins', the difference between 235/80 (oem non-steel tire) and 235/85 isn't a quarter inch, partly due to tire construction...

[EVMIII]

What's a "PTW"?

Performance Tire and Wheel, local tire shops.

[EVMIII]

I can tell you that on the Saulins', the difference between 235/80 (oem non-steel tire) and 235/85 isn't a quarter inch, partly due to tire construction...

Understand. It's about a 1/4 inch with no weight on the tire. Current tires have some squat in them so the actual difference would be more. How much height increase did you see with the Sailuns?

[gearhead]

I don't need tires, yet. I'm researching and keep running into very conflicting info on wheels. Tredit says I can't run over 80 psi on my wheels. BUT looking on eTrailer they are saying if you use steel threaded valves it is OK on their brands. One of them looks just like my Tredit.
I need to call eTrailer.

[bobbecky]

Look on the back of one of the wheels, typically on these aluminum wheels on one of the spokes, and it will have cast into the metal, the weight capacity and the PSI rating. The PSI rating, if it's over 80 PSI, needs the metal stems to handle the higher pressure. On our 2012 Montana, it shows 3750 lbs and 110 PSI.

[gearhead]

Look on the back of one of the wheels, typically on these aluminum wheels on one of the spokes, and it will have cast into the metal, the weight capacity and the PSI rating. The PSI rating, if it's over 80 PSI, needs the metal stems to handle the higher pressure. On our 2012 Montana, it shows 3750 lbs and 110 PSI.
All I saw was 3200 pound weight limit. I called Tredit and the first person said he had no info on pressure limit, so no problem. I asked to speak with someone else, she said 80 psi was the limit.
Look at the Q&A tab on the wheel section on eTrailer.

[CWtheMan]

CW,

Do you or do you know anybody running these tires? Under the Synergy brand or otherwise? Being so stiff I wonder how they pull? Should roll well, a little concerned about the stiffness bouncing the trailer around.

Bud

It's sort of unrealistic to compare the 80 tire to the 85 tire. They are completely different in construction and load capacity. The ST235/85R16G is a completely new tire and I doubt you'll find anyone that has much experience with it.

Personally, IMO, it's an over kill tire for your trailer weight. The GY G614 has a proven track record on trailers in your weight class. It's designed for trailer service and is OEM on many trailers in your weight class. You need rims sized 16x6.5" rated for 3750# at 110 psi.

http://www.goodyearrvtires.com/tire-selector.aspx

[EVMIII]

I am not currently at my camper, does anyone know the rim rating that came with the 2014 Alpine 3010RE. I know it came with a 235/80R16 E Trailer King (3080@80lbs). Can I run the Good Year G614 235/85R16 G (3750@110lbs) on my current rims?

They are pretty proud of the G614, best price I could find was about $1100 (plus mount) for four. I can get the Synergy's mounted and balanced for $800.

[EVMIII]

I know that more expensive doesn't always mean better, but it is crazy they put such cheap tires on new expensive fifth wheels. The Trailer King Radial STs on the trailer are $70 a piece. All four are cheaper than one GY G614.

[dcg9381]

I am not currently at my camper, does anyone know the rim rating that came with the 2014 Alpine 3010RE. I know it came with a 235/80R16 E Trailer King (3080@80lbs). Can I run the Good Year G614 235/85R16 G (3750@110lbs) on my current rims?
.



I wouldn't trust a model to model comparison - too much variation in construction. The psi / lb rating is usually on the inside of the rim - can be seen if you remove it. At least on my Carbon.

[bsmith0404]

I am not currently at my camper, does anyone know the rim rating that came with the 2014 Alpine 3010RE. I know it came with a 235/80R16 E Trailer King (3080@80lbs). Can I run the Good Year G614 235/85R16 G (3750@110lbs) on my current rims?

They are pretty proud of the G614, best price I could find was about $1100 (plus mount) for four. I can get the Synergy's mounted and balanced for $800.

Keystone used different wheels on different models and different years. One of the more common wheels they used is the Sendel T03. If that is what you have, they are rated for 100 psi. See the link below.

http://www.sendelwheel.com/wheels/t03sm

One of the wheels Sendel recommends if you want to run an F or G rated tire is the T11BM (I have Carlisle F rated Carlisle Trail RH on mine). This is the wheel I'll be putting on my Alpine soon....anyone want to buy a set of T03s?

http://www.sendelwheel.com/wheels/t11bm-0

[EVMIII]

Thanks for the info. Without confirmation from the rim itself, I have reached the conclusion that I have


T03-66866BM** 16x6 8/6.5 +0 4.90 3580 @ 100 PSI

My local tire guy says he would not hesitate putting a F or G rated tire on this rim.

Brent, why would you need to change rims to run the Carlisle's? If you run F load (235/85 16) per the Carlisle website needs a 6" rim and 95psi.

Obviously I have more research to do. Thanks again.

[CWtheMan]

This is a verbatim quote from a major tire manufacturer.

"Rim dimensions are standardized by The Tire and Rim Association for size and contour only, and particular tire and rim combinations are designated to assure proper mounting and fit of the tire to the rim. The load and cold inflation pressure imposed on the rim and wheel must not exceed the rim and wheel manufacturer’s recommendations even though the tire may be approved for a higher load or inflation. Rims and wheels may be identified (stamped) with a maximum load and maximum cold inflation rating. For rims and wheels not so identified or for service conditions exceeding the rated capacities, consult the rim and wheel manufacturer to determine rim and wheel capacities for the intended service".

[bsmith0404]

Thanks for the info. Without confirmation from the rim itself, I have reached the conclusion that I have


T03-66866BM** 16x6 8/6.5 +0 4.90 3580 @ 100 PSI

My local tire guy says he would not hesitate putting a F or G rated tire on this rim.

Brent, why would you need to change rims to run the Carlisle's? If you run F load (235/85 16) per the Carlisle website needs a 6" rim and 95psi.

Obviously I have more research to do. Thanks again.

When I spoke to the rep at Sendel, he recommended a higher rated wheel on my RV. His explanation is that an aluminum wheel goes through flexing similar to an aluminum can. If it is flexed too much, sooner or later if it will crack just like a can that has been bent back and forth many times. The crack typically takes place where the spoke meets the hub. In the case of a T03 on a 15,500 lb RV he said, in his opinion, it is too light of a wheel and will fail sooner rather than later. So just as many people want a tire with some reserve weight capacities, a wheel with similar reserve weight capacities is also recommended.

[EVMIII]

Copy that, I wasn't thinking that you are about 4K lbs heavier than I am. Sounds like you have a good plan.