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 > Your search for posts made by 'CapriRacer' found 36 matches.

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  Subject Author Date Posted Forum
RE: Toyo tires?

I am sitting on a Goodyear problem, near Durant, OK. Bought 7 Goodyear SR-A tires for my 31 ft class C and have had not one but TWO of them bubble out the sidewall - one tire with less than 4,000 miles and another with less than 900 miles (the spare)!!! I need advice on replacing these awful tires right now. Do you mean an indentation? USTMA Service Bulletin: Tire Sidewall Undulations From the Bulletin: Sidewall indentations are a cosmetic characteristic and will not affect the performance of the tire. If bulges, rather than indentations, appear on the sidewall or if there is any question concerning the sidewall appearance, the tire should be examined by a tire service professional. So you may or may not have a problem.
CapriRacer 10/18/19 06:17am Class C Motorhomes
RE: Lowering TV tire pressures

Just an FYI: I spent 5 years as the technical liason from a major tire manufacturer to Ford - calling on the light truck folks. They test their vans, pickups, and SUV's both fully loaded and empty at the specified pressures (the ones on the door placard) for both ride quality and handling. They adjust the springs, shocks, and sway bars to get the vehicle to behave benignly at both conditions - that way the consumer gets a vehicle they don't have to adjust the tire pressures to be confident the vehicle won't misbehave in emergency manuvers and has a reasonable ride quality. They also tested their trucks pulling trailers at the rated towing capacity. I assume that other vehicle manufacturers do the same. So I am confident that using the pressure specified on the vehicle tire placard is what they had in mind for both fully loaded and empty vehicles - unless they specify otherwise in the owners manual.
CapriRacer 10/10/19 06:59am Tow Vehicles
RE: ST Tires ???

Another vote for GY Endurance. They've been around long enough for me and their record is excellent regarding blowouts and failures. The only thing I don't like about them is they are subject to rock mining, where a sharp rock will burrow all the way down to the cords. Most tires wont do this but mine have several places where I can see the silver cords after removing rocks. I have followed this and many other tire discussions and have a question about this comment and those by others. If the Endurance is so good (stellar) after only 3 years why is this rock mining occuring? As pointed out by Capri Racer the 3rd year of a tires' life is when problems may show up and now an issue has been identified. I don't know about others here but if I found a 3 year old tire with cords showing in the thread area due to rocks I would not want that tire on my equipment until the reason is found. IMO the jury is still out. And Scott, I am not picking on you, just using your words to highlight my thoughts. I think you misunderstood what I was saying. I said that when it comes to tires failing from non-road hazard causes, the returns peak in the 3rd summer, but you get a good indication in the 2nd summer. That means that if rock mining is an issue, by the 3rd year some would have failed.
CapriRacer 10/07/19 06:00am Fifth-Wheels
RE: ST Tires ???

…. Only been out 2 years or so? Launched Feb 2017...... My experience analyzing tire returns for a major tire manufacturer says that it is the summer months that matter and that tire failures peak in the 3rd summer, but you get a good indication after the second summer. That means the Goodyear Endurance has experienced 3 summers with no reported non-road hazard failures.
CapriRacer 10/06/19 07:04am Fifth-Wheels
RE: Tires Date

Just so everyone knows: Within the tire industry, there is a common belief that any properly stored tire within 6 years of manufacture can be sold as "New". I say "belief" because I don't know of any data to support this - EXCEPT: The tire manufacturer I worked for tested 3 year old tires out of their warehouse and could find no significant difference from freshly made. So if you are concerned about the age of the tires you purchase, say so up front. It will save a lot of hassle later.
CapriRacer 10/04/19 06:29am Tow Vehicles
RE: Inside Tire Wear?

does it look something like this - https://i.imgur.com/4Cc5lRwl.jpg If so, My Goodyear G614's looked like that as well.. I went to Goodyear and inquired about the issue.. After some looking the manager came up with what they called "Shoulder Step" and deemed it normal for the tire. He even showed me a picture on his computer that looked exactly like my tires. I trust Goodyear, but did not trust that tire wear so I upgraded my stuff to 17.5 G114's and never looked back. What that is is the width of the tread is too wide for the steel belts, so the outer portion of the tread is not as supported as the rest, so it wears faster. It is aggravated by frequent and hard cornering. Nothing to be concerned about except for the appearance. Ultimately it means that Goodyear's design engineers didn't do a great job in the design process.
CapriRacer 09/27/19 06:11am Fifth-Wheels
RE: Tire inflation

Word of caution: Those tire load tables are MINIMUMS!! You should use MORE pressure than the chart indicates. (I recommend 15%) That difference is called "Reserve" and vehicle manufacturers include some reserve when they specify the pressure on the door stick (called the placard). Also, there will be side to side weight variation, so if you weigh only the axles, don't forget to include some factor to account for this. I recommend 10%, but that may be a bit pessimistic.
CapriRacer 09/22/19 07:38am Class C Motorhomes
RE: Goodyear Endurance long term review.

A couple of thoughts: Background: I spent the last 10 years of my career analyzing failed tires. It's amazing how much information you can pickup when you look closely and know what to look for. So - Yes - we can tell the difference between a road hazard failure and a structural failure not caused by a road hazard (or 90% of the time, anyway.) The company I worked for had a good feedback system - known as the adjustment system. We credited dealers for tires they sent back that failed for a variety of reasons, including non-road hazard failures. Since we paid for the shipping, their only cost was the time and effort to fill out the paperwork. We got enough tires back to be able to plot year to year progress, and our data reached back decades. To give you guys a feel for the volume of data we had, the production levels every year were in the 10's of millions, so even a 0.01% return rate meant thousands of tires. One of the things we noticed was a consistent year to year return pattern. Returns for non-road hard failuires was tied to the summer heat. We hardly got any retirns in November to March. Returns peaked in the third year after production, but you could get a quantifiable sense of how well a tire was doing after the second year. I also spent a lot of time purusing the internet to get a feel for the amount of complaints conmpared to what was being sent back to us. It was clear that the complaint level was small compared to the quantity of tires we got back, but you could kind of gauge the relative performance. Having said that, I started tracking the on-line reports of failures of the Goodyear Endurance ST tire line when it was introduced in the fall of 2016. That means the first production is in the last few months of the 3rd summer, and the second year of production is in the 2nd year. Because I have not seen any reported non-road hazard failures - compared to previous reported failures for the Marathon, I am declaring that Goodyear has fixed whatever problem they had with their ST tires.
CapriRacer 09/10/19 06:56am General RVing Issues
RE: Multiple Tire Blowouts

What is your opinion about the RVIA recommendation for RV trailer manufacturers to discontinue the use of bias ply ST tires on wheels 14" OD and above? I've already found one manufacturer (Kenda) that's already building 12" OD radial tires. Boat Trailer haulers are going to like them as they are LRD with 1520# of load capacity. I don't have an opinion one way or the other. I don't know why they would make that recommendation and I don't have any references that say there is a difference - except, of course, about the difference in the way they handle - and I wouldn't think that would make a large enough difference to result in that recommendation.
CapriRacer 09/01/19 05:14am Travel Trailers
RE: Multiple Tire Blowouts

…… A hypothetical for the new GY Endurance ST brand could include a collaboration between GY & RVIA. The Endurance came on the market about the same time RVIA made the now enacted recommendation for all member RV trailer manufacturers to provide 10% in load capacity reserves above vehicle certified GAWRs for all tire fitments. …… Interesting, but it doesn't explain why the older trailers also are not experiencing these failures. Nevertheless, the 10% change was something that needed to be done to bring the RV industry in line with cars and trucks. …… Yes, the Endurance tire sidewalls have more material than the Marathons. That material is in the form of scuff guard protection and has no bearing on the tire's load carrying ability...… I don't think it's the sidewalls that are important here. It's the cap plies in the tread area. The Marathons didn't have them and the Endurance ST's do. My experience says that cap plies are a great help. Aside from improving the speed capability, they also increase the load carrying capability. That's why the Endurance series has an N speed rating, instead of the no speed rating for the Marathon's (and L speed rating for the 2015 production onward).
CapriRacer 08/31/19 06:05am Travel Trailers
RE: Multiple Tire Blowouts

Perhaps I can add something to this thread. Retired tire engineer here. My expereince with tire failures is that they peak in the third year, but you get a solid, quantifiable, indication in the second year. Also, that tire failures are a summer phenomenon. They are virtually non-existant in Nov, Dec, Jan, and Feb. The earliest production of the Goodyear Endurance ST tire line is in the tail end of its 3rd summer, and the second summer for the second year of production. I haven't heard of any failures, so my experince says the problems that occurred with the Marathon have been fixed
CapriRacer 08/30/19 05:43am Travel Trailers
RE: need new tires

….. also what does the 107N stand for? ….. That's the Service Description: Tire Rack: Tire Tech: How to Read Speed Rating, Load Index & Service Descriptions Short version: It's the European way of delineating the Load Index and the Speed Rating. The US way is to separate the 2 and use the Load Range (a letter) instead of the Load Index.
CapriRacer 08/03/19 06:28am Fifth-Wheels
RE: Should I go back to OEM size tires?

2007 Suburban 2500's came with 6.5" width wheels. An LT265/75R16 requires a 7" wide wheel minimum. Using a narrow wheel tends to make the vehicle follow the ruts in the road and makes it sensitive to cross winds.
CapriRacer 07/22/19 06:38am Towing
RE: Endurance failure

When I was working at a major tire manufacturer, we used to classify tire returns into 3 categories: 1) Initial quality: Anything that exhibited itself almost immediately. This included vibrations, bulges and indentations, and appearance issues. These are all manufacturing related. This "failure" sounds like one of those - a manufacturing problem. 2) Road hazards - self explanatory 3) Endurance - these occur many miles down the road and are what most everyone means when they are talking about ST failures, China bombs, etc. Endurance failures are design related, not defects! This "failure" is NOT an endurance failure.
CapriRacer 07/09/19 06:47am Travel Trailers
RE: Tire plugs

I'm the guy who ruins the statistics. I've had 2 plugs fail out of 4. And for the record, you’re the guy who claims to know more about tires than the Michelin man himself. Yup! I did it as an experiment. I didn't do them myself, and I kept track of their success. Which is why I think of plugs as a temporary repairs.
CapriRacer 06/17/19 06:28am General RVing Issues
RE: Tire plugs

I'm the guy who ruins the statistics. I've had 2 plugs fail out of 4.
CapriRacer 06/16/19 06:08am General RVing Issues
RE: Tire warranty

Many tire dealers don't like doing warranty work - no money in it. This is particularly true if they didn't sell the tire.
CapriRacer 06/11/19 06:43am Class A Motorhomes
RE: 10 ply tires?

Hello Any issues going from d range 8 ply 65 psi to 10 ply 80 psi, on the stock rims on my rockwood 8281ws? Thanks And just so everyone understands: The term "ply" is used incorrectly. Officially these tires are Load Range D and E. The obsolete term "Ply Rating" is sometimes used, but it is confusing because modern tires don't have 8 or 10 actual plies - which is why it was replaced - and it is even more confusing when the word "rating" is left out.
CapriRacer 06/11/19 06:37am Fifth-Wheels
RE: Could it be simply a matter of more air in the tires?

Last Thursday, I replaced the OEM BF Goodrich Rugged Trail LT245/75R17 LRE tires with the identical sized BF Goodrich All Terrain KO2 tire. Up until last Thursday, my truck with the OEM tires (always inflated to 55# front/60# rear per the yellow sticker on the door jam) and the Jay Flight 23RB trailer were an extremely stable combo. 99.9% of all passing 18 wheelers never wiggled the combo. Normal winds had little effect. However, the first tow with the new tires and same trailer, loaded about the same, was closer to a white knuckle affair. The air pressure in the new tires was the same as the OEM tires, 55# front/60# rear. Would it help if the new tires were aired up more? Say to 65 or 70 in the rears, and 5 to 10 pounds more in the front? The basic tread design is exactly the same between the two tires. However, the new tires are 3 pounds heavier per tire, has a slightly deeper tread, and counting the heavier, larger shoulder lugs, is about .5 inches wider. Any thoughts? Seems that the latest mold release compounds causes the tires to initially be a bit squirmy (how's that for a technical term?) until it wears off. This seems to be worse for LT tires than for passenger car tires, but it happens there, too.
CapriRacer 05/31/19 05:54am Tow Vehicles
RE: Tire Dealer trying to sell me older tires, what do I do?

First, it is a common BELIEF in the tire industry that properly stored tires are "new" until they are 6 years old. I say "belief" because I don't know of any studies that confirm this. HOWEVER, the company I used to work for had data that indicated that there was no difference between properly stored 3 year old tires and freshly made. Also, the clock starts ticking when the tires are SOLD - and the date of manufacture is only used in the absence of a purchase date (no receipt!) Check the warranty for details. Further, it is common for some tires to be produced only once a year. That means the tires sitting on the shelf could easily be over a yaer old and no one on the retail end of things is going to care. So I think the OP is going to have some problems with the tire dealer - except for the fact that the dealer did agree to supply tires less than that - Poor salesmamship!
CapriRacer 05/16/19 06:04am Class A Motorhomes
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