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Full Version: Maxxis Load Range E Trailer Tires ... The End To All My Troubles
GlamisDunes.com > Trucks, Jeeps and RV's > RV Technical > Fifth Wheel Trailers/Toy Haulers
maddog1927
My dad says "marrage is the end to all your troubles, I just won't tell you which end"

Well I thought when I bought the spendy maxxis load range e trailer tires (6 of em) that I was trough with tire troubles ...

Blew one out near yuma. Took an hour to unwrap the stinkin tread from around the axle / repair broke brake wires, tore up my fender skirts, made the drive my wife hates that much longer.

Went out this weekend, Blew out another, plus the 1st replacement has a bubble or something.

I check air psi prior to each trip.

I NEVER have these issues with the tow vehicle, and I hoss on those tires. So are "trailer service only" tires just not built to the same standards as a light truck tire? I would like to go to a light truck tire, but have not found a 15" withssu a high enough weight rating. May have to go to 16" wheels.

Any Ideas?




sand junkie
That Sucks. I just put 6 new ones on and heading for the Sierras next week. I hope I don't have a similar fate. Do you know the manufacture date? Maybe a bad batch?
Montana Girl
That is so strange. Maxxis has been the best tires we have found.
socaldmax
I'd suggest switching to 16" tires/rims. I have a set on my 40' WW and they have about 9,000 mi and 5 yrs on them, no problems. One trip was about 4700 mi in the summer, with a high of 116* in AZ, and not one issue. Of course that's probably only because I had 2 spares with me.

I don't remember what brand of tire I have, but they were less than half of what the Michelins cost. They still look like they have about 75% of the tread left. Works fine, lasts a long time.
lincster
No 15" tires hold up to these big haulers.... the only way to not have tire issues is to move to a 16" LT tire.
Infidel Defiler
I switched to a Kelly (goodyear) which is only distributed by Allen tire. several trips on them so far , no issues.
onanysunday
Are you running the M8008 STs.What is your date code for age? How heavy is the trailer vs the load rating on the tires. I had 15" on my old toyhauler and blew several tires of different brands. Went to 16" truck tires and never had another blowout. On your date code look for a 4 digit code. Example: 3006 would be the 30th month of 2006. As far as the Maxxis I just put a set of 4 on my 16' tandem axle trailer with 3500 lb axles. I did a ton of research and over at the RV forums they were the best tire overall. My guess is you are overloaded or the tires are old. In Arizona Discount Tire recommends replacing trailer tires every 3 years. I have stretched past that to maybe 4 but after that you are asking for problems.
panther512
Call Maxxis they welcome the calls I have spoke to them several times with questions and great support.
Rockwood
ST tires are built to only withstand 55mph. If you're driving faster than this, the load ratings go out the window from heat. Get some LTs.
sanddunesaddict
QUOTE (Rockwood @ Aug 11 2009, 08:02 PM) *
ST tires are built to only withstand 55mph. If you're driving faster than this, the load ratings go out the window from heat. Get some LTs.


I was going to ask the same question.
He is right ST or trailer tires are only rated for 55MPH at max pressure.So even if youre not fully loaded so you only put in 50 psi instead of 65 they will have a problem.

I was always blowing tires left and right until I slowed down.

A good friend of mine bought your same tires at Discount because they told him they were the best.
He only got a couple of trips before the first couple seperated.
Then this last weekend at Dumont for the Night Drags he noticed the front tires on both sides were seperated,these are the last 2 original Maxxis he bought the other 4 have been replaced I think a couple of times.

I am not sure how fast he likes to tow though.

Like the others said if you can upgrade to 16" they will last alot longer...especially if you run some Michelins like the XPS RIB.
socaldmax
QUOTE (Rockwood @ Aug 11 2009, 08:02 PM) *
ST tires are built to only withstand 55mph. If you're driving faster than this, the load ratings go out the window from heat. Get some LTs.



Is this correct?

Is there some reference you can point me to that states this? I'm not doubting you, but I'd like to have a legitimate reference for info like this before I start repeating it to others.
socaldmax
I found the following info on the Discount Tire website, which is a source I would trust.

QUOTE
Speed
All "ST" tires have a maximum speed rating of 65 mph.
As heat builds up, the tire's structure starts to disintegrate and weaken.
The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.
SUBIE4ME
When I bought my 30ft triple axle sport traler, I put 16 inch tire and wheels on it. That was 7 years ago and the same Bridgestone vsteel tires are still on it. Forget the 15's. There is a much larger selection of tires to choose from in 16's.
sanddunesaddict
QUOTE (socaldmax @ Aug 11 2009, 11:36 PM) *
I found the following info on the Discount Tire website, which is a source I would trust.

QUOTE
Speed
All "ST" tires have a maximum speed rating of 65 mph.
As heat builds up, the tire's structure starts to disintegrate and weaken.
The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.




I cant find the source I had for all my info.
I was looking a year ago when I wass freaking about my toyhauler being overweight.

I'll keep looking for the link.
charred1
Here's a question and answer posted up on "Allexperts.com" regarding ST vs. LT. tires.

Question
Hi, I have had troubles with some new ST tires I had installed. Just various problems such as blow outs. The size is ST205/75r15. I always check tire pressure and inspect/check tires frequently and I even went from load range C to D's. I have a Terry 26ft. tandem axle travel trailer 4600lbs dry 6700lbs max. I have read online that many people are changing from ST's to LT's and even some toy haulers now come with LT tires instead. Do you have any thoughts on going from ST to LT? I have read a lot on the differences but just seems like there is so many problems with ST's even though they are built for the trailers abuse. THANK YOU for your time!

Answer
The derivation of ST tires is an out-growth of leftover molds when the tire sizing changed. There was a need for inexpensive tires for trailers, and the tire manufacturers had these molds that would otherwise be thrown away.

But this is more about load carrying capacity:

An ST225/75R15 Load Range C has a load carrying capacity of 2150 # @ 50 psi.

AN LT225/75R15 Load Range C has a load carrying capacity of 1875 # @ 50 psi.

That's a difference of 275# (9%) in favor of the ST. However, LT's and ST's are built very similarly, so there isn't any real difference, except to say the ST's are more highly loaded.

BUT

If folks are smart, while they are migrating from ST's to LT's, I'll bet they are also doing 2 things that will have a major impact on overall performance:

1) They are switching up in load range and using more inflation pressure - which has the effect of reducing heat buildup for a given load.

2) They are switching to a major brand. ST tires tend to be built by niche tire manufacturers, while LT's tend to be built by major tire manufacturers. Needless to say, a major manufacturer is going to be more up to date on materials and design techniques - and that will translate into better performance.

BUT

An ST205/75R15 Load Range C has a load carrying capacity of 1820# @ 50 psi. 4 tires would have a max load carrying capacity of 7280#. Your trailer say the max GVW is 6700#.

Assuming a 10% tongue weight, then the tires actually see about 6090#.

So on the surface, there appears to be sufficient load carrying capacity in the tires. But the speed limitation is 65 mph. To get a speed capability between 66 and 75 mph, the inflation pressure must be increased 10 psi, and for speeds between 75 and 85 psi, not only is the pressure to be increased the previously mentioned 10 psi, but the load must be reduced 10%.

Plus, one of the lessons from the Firestone / Ford situation was that the tire needs to have more unused load carrying capacity (The Explorer didn't have any!) I like to see a 15% reserve beyond all these things we've previously mentioned.

So I think that 4 ST205/75R15 Load Range C's have a usable load carrying capacity of 5755# - which is less than the 6090#.

It would be a good idea to weigh the trailer fully loaded - with everything you can possibly think of that you would put in - a worst case. That also means all water tanks full - gray, white, black. I know that is not how this usually works, but there is always the possibility that this might happen so it needs to be considered.

Weigh the trailer tire by tire if possible, but at a minimum, axle by axle. This will give you a good idea of what the actual load on the tires are.

But you posted another question to me that relates to using a 7" rim - and I'm not sure how long you have had them and whether it has had any change in your overall tire performance.

But just to be clear, the term "Blowout" covers a lot of territory. The way I use the term only includes a rapid loss of inflation pressure, which is always due to impacting an object that in turn damages the structure of the tire to the point where it can no longer contain the air pressure - which a resulting explosion.

But some folks use the term to mean a tread separation - and some use the term to mean the result of running a tire with little or no inflation pressure - more properly called a "run flat" - and that's usually the result of a puncture.

Only the tread separation should be considered linked to the tire size and load carrying capacity. The other 2 are road hazard and should be completely discounted when trying to solve a problem of this type.

Rockwood
QUOTE (socaldmax @ Aug 11 2009, 11:36 PM) *
I found the following info on the Discount Tire website, which is a source I would trust.

QUOTE
Speed
All "ST" tires have a maximum speed rating of 65 mph.
As heat builds up, the tire's structure starts to disintegrate and weaken.
The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.


Ah, whoops, 65mph. Either way, based on what I see on the way out there, there are PLENTY of people going much faster than that. You all know who you are... icon_biggrin.gif
railjobz
I know alot of you don't like carlisle tires but my first were e rated lasted four years my set now year and a half 40 ft ww lt sandcar and four quads and all the rest of the crap we hall no problems
charred1
Carlisle tires? You must be one of the lucky ones. I recommend Denman.
sanddunesaddict
I will be installing Michelin XPS Ribs on my Gearbox real soon.
The transmasters it came with have been good to me but Michelins have 0 problems
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