ST vs LT Tires -- I'm confused

There is no incentive for a tire company to make a good ST .
ST tires are a price item .
That is why the G26 and the equivalent Continental Vanco 2 in the size of 225 /70 R 15 load range D are currently the heaviest tires available in 15 inch .
The maxxis E rated ST is about 4 pounds lighter than the LT Vanco 2 and Goodyear G26
That is also why there are not dozens of competitors to the G26 and Vanco 2 .
Most people are shopping price .

Me Again wrote:

laknox wrote:

Lowsuv wrote:
Many of the maxxis supporters are of the " me too " and " X 2 " crowd .
None of them supplies exactly what it is they like about Maxxis .
This particular forum is the only place I have found where Maxxis is an exalted brand .
If you look at the posts by huntindog , sprinklerman , tireman9 , partymarty , gmwphotos , and LowSuv you will discover that each of them goes further into the details of which tires are better and why .
There are some posters that fail to recognize that ST tires are "uprated " on the sidewall capacity relative to the Tougher LT tire standard .
As most of the experienced posters have pointed out the ST standard is a way for the trailer manufacturers to install a cheaper tire on their trailers .
ST tires are designed for trailers that sit 95 % of the time.
LT tires are designed for trucks that move 95 % of the time .
Search for partymarty's post comparing goodyear tires ST versus LT in a 235 X 16 size by clicking on his Icon under view posts .
Goodyear sells the ST tire for 88 % of the price , 88 % of the weight of the same size LT tire yet the ST tire is placarded for 3500# and the ST tire is placarded for 112% of the weight capacity .
The ST tire is definitely Less tire than the LT tire .
But some folks such as Francesca , are not grasping the fact that an ST tire is less tire than the same size LT tire ..

The problem that those of us with 15" wheels face, is finding the "best of the worst". I've become educated by reading here, and other fora, about the tire situation, and have experienced 8 tire failures in 12 years, one semi-catastropic and 7 caught before they failed while traveling. That's a 100% failure rate. I'm now on my 3rd set of tires. Were there a quality E-range LT in 15", they couldn't make them fast enough to supply the demand...and the hell with what the sidewall says. I have upgraded from the placarded D-range to E-range after my first set, check them often, and keep to 65, or less, so I know I'm not abusing my tires. They're just******from the get-go.

Lyle

Why are you making this so hard.

LT225/70R15 tires Goodyear Cargo G 26 and Continental Vanco both are rated at 2450 # weight.

Four of these are good for 9800 pounds. I am sure that your trailer GVWR is well below that number, then you subtract the pin weight and you would be luck to see 7K on the axles. C, D, D has little to do with it.

Chris

FYI, my FW has a GVW of 11,300 lbs, and has a fairly light pin wt. For D-range tires, I'm nearly at the limit of their capacity. I ended up going with E-range Carlisles this last time because I couldn't wait for Discount to ship in the Maxxis I really wanted. So now, tell me how many E-range 15" tires you can find, ST =or= LT? NONE in LT and very, very few in ST. FWIW, even Maxxis are simply up-rated D-range LT-type tires, IMO. With the prevalence of "light" or "1/2 ton" TTs and FWs these days, all running 15" wheels, you'd think even ONE tire company would grab the bull by the horns and make a =good= ST. We certainly know the bean counters who never leave their offices at the RV manufacturers won't demand it.

Lyle

.
.
An FYI.... sad tire saga posted on the *General RVing Issues* forum that fits right in for this thread's topic......

"Towmax Tires - Another One Bites The Dust" - With pics.

Part of his trailer and his wallet bit the dust also..:(

~

laknox wrote:

Lowsuv wrote:
Many of the maxxis supporters are of the " me too " and " X 2 " crowd .
None of them supplies exactly what it is they like about Maxxis .
This particular forum is the only place I have found where Maxxis is an exalted brand .
If you look at the posts by huntindog , sprinklerman , tireman9 , partymarty , gmwphotos , and LowSuv you will discover that each of them goes further into the details of which tires are better and why .
There are some posters that fail to recognize that ST tires are "uprated " on the sidewall capacity relative to the Tougher LT tire standard .
As most of the experienced posters have pointed out the ST standard is a way for the trailer manufacturers to install a cheaper tire on their trailers .
ST tires are designed for trailers that sit 95 % of the time.
LT tires are designed for trucks that move 95 % of the time .
Search for partymarty's post comparing goodyear tires ST versus LT in a 235 X 16 size by clicking on his Icon under view posts .
Goodyear sells the ST tire for 88 % of the price , 88 % of the weight of the same size LT tire yet the ST tire is placarded for 3500# and the ST tire is placarded for 112% of the weight capacity .
The ST tire is definitely Less tire than the LT tire .
But some folks such as Francesca , are not grasping the fact that an ST tire is less tire than the same size LT tire ..

The problem that those of us with 15" wheels face, is finding the "best of the worst". I've become educated by reading here, and other fora, about the tire situation, and have experienced 8 tire failures in 12 years, one semi-catastropic and 7 caught before they failed while traveling. That's a 100% failure rate. I'm now on my 3rd set of tires. Were there a quality E-range LT in 15", they couldn't make them fast enough to supply the demand...and the hell with what the sidewall says. I have upgraded from the placarded D-range to E-range after my first set, check them often, and keep to 65, or less, so I know I'm not abusing my tires. They're just******from the get-go.

Lyle

Why are you making this so hard.

LT225/70R15 tires Goodyear Cargo G 26 and Continental Vanco both are rated at 2450 # weight.

Four of these are good for 9800 pounds. I am sure that your trailer GVWR is well below that number, then you subtract the pin weight and you would be luck to see 7K on the axles. C, D, D has little to do with it.

Chris

.

Lyle -
looks like you need a "couch session" with Dr. Fast Eagle!..:B

~

Lowsuv wrote:
Many of the maxxis supporters are of the " me too " and " X 2 " crowd .
None of them supplies exactly what it is they like about Maxxis .
This particular forum is the only place I have found where Maxxis is an exalted brand .
If you look at the posts by huntindog , sprinklerman , tireman9 , partymarty , gmwphotos , and LowSuv you will discover that each of them goes further into the details of which tires are better and why .
There are some posters that fail to recognize that ST tires are "uprated " on the sidewall capacity relative to the Tougher LT tire standard .
As most of the experienced posters have pointed out the ST standard is a way for the trailer manufacturers to install a cheaper tire on their trailers .
ST tires are designed for trailers that sit 95 % of the time.
LT tires are designed for trucks that move 95 % of the time .
Search for partymarty's post comparing goodyear tires ST versus LT in a 235 X 16 size by clicking on his Icon under view posts .
Goodyear sells the ST tire for 88 % of the price , 88 % of the weight of the same size LT tire yet the ST tire is placarded for 3500# and the ST tire is placarded for 112% of the weight capacity .
The ST tire is definitely Less tire than the LT tire .
But some folks such as Francesca , are not grasping the fact that an ST tire is less tire than the same size LT tire ..

The problem that those of us with 15" wheels face, is finding the "best of the worst". I've become educated by reading here, and other fora, about the tire situation, and have experienced 8 tire failures in 12 years, one semi-catastropic and 7 caught before they failed while traveling. That's a 100% failure rate. I'm now on my 3rd set of tires. Were there a quality E-range LT in 15", they couldn't make them fast enough to supply the demand...and the hell with what the sidewall says. I have upgraded from the placarded D-range to E-range after my first set, check them often, and keep to 65, or less, so I know I'm not abusing my tires. They're just******from the get-go.

Lyle

gmw photos wrote:

laknox wrote:

gmw photos wrote:

ol Bombero-JC wrote:



If you have 15" wheels, your choices are limited. Look to Maxxis.
If you have 16" wheels - Michelin XPS Ribs or BFG TAs (also Michelin) will be an x'lnt choice.

In 15" there are several LT commercial tires available if you want to get away from ST

Not in E-range that anyone here has been able to find. D-range, yes...

Lyle

I don't think you'll find a LR E in 15". Not certain, but I am thinking off the top my head you have to go to 16 for that.

Sorta my point... :-)

Lyle

Me Again wrote:

bobx2 wrote:

gmw photos wrote:

ol Bombero-JC wrote:



If you have 15" wheels, your choices are limited. Look to Maxxis.
If you have 16" wheels - Michelin XPS Ribs or BFG TAs (also Michelin) will be an x'lnt choice.

In 15" there are several LT commercial tires available if you want to get away from ST

Care to share where you found several LT tires in a 15" size? And what their load ratings are? Pretty much have to go with ST tires in the 15" size if you are carrying any weight at all. Carlisle and Maxxis are all I'd consider.

LT225/70R15 tires Goodyear Cargo G 26 and Continental Vanco both are rated at 2450 # weight.

Chris

I have not looked, but I'd bet those are D-range, not E-range tires. Therein lies the problem. No 15" E-range LTs.

Lyle

Me Again wrote:

Francesca Knowles wrote:

elkhorn98 wrote:
I think people need to read the thread on testing requirements by the dot.

Here ya go- existing rules, as can be seen at this NTSB link:

NTSB wrote:
ST tire high speed performance test requirements.



S2Application. This standard applies to new pneumatic radial tires for use on passenger cars manufactured before 1975, new pneumatic bias ply tires, T-type spare tires, ST, FI, and...



§ 571.109Standard No. 109; New pneumatic and certain specialty tires.

CFR Title 49 571.109

S5.5High speed performance.

S5.5.1After preparing the tire in accordance with S5.4.1, mount the tire and wheel assembly in accordance with S5.4.2.1, and press it against the test wheel with a load of 88 percent of the tire's maximum load rating as marked on the tire sidewall.

S5.5.2Break in the tire by running it for 2 hours at 80 km/h (50 mph).

S5.5.3Allow to cool to 38° ±3 °C (100° ±5 °F) and readjust the inflation pressure to the applicable pressure specified in Table II.

S5.5.4Without readjusting inflation pressure, test at 121 km/h (75 mph) for 30 minutes, 129 km/h (80 mph) for 30 minutes, and 137 km/h
(85 mph) for 30 minutes.

So why don't they test ST tires at they full mythical inflated ratings rather than at 88%?????

Chris

Deleted

Me Again wrote:

So why don't they test ST tires at they full mythical inflated ratings rather than at 88%?????

Chris

In keeping with the general theme here, I guess I'd better answer that it's because they just don't care about ST's...and I'd point out that the same must be presumed about the other tires in that group, which includes several classes of passenger car tires.

Shocking, isn't it? :E

NTSB wrote:
S2Application. This standard applies to new pneumatic radial tires for use on passenger cars manufactured before 1975, new pneumatic bias ply tires, T-type spare tires, ST, FI, and...

Source of quote