Tire Experts, question for ya........
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From: Bossier City, LA
Tire Experts, question for ya........
I am having a tire delima. 05 F250 XLT FX4 with 17" wheels. I was running the mastercraft courser CT LT265/70/R17E and got 14k out of them before they were cut all to heck and finally a rock cut a 1-1/2" cut right through the cap. So onto the Toyo delima, got a set of 285/70/R17D and after a whopping week had a blowout. I check air pressure on a weekly basis, or more. The Toyo's are rated at the same load rating as an E 3195# single, which is what the Coursers were rated at. The guys at work are running the Coursers D range and having wonderful luck with them wearing very well, and not cutting up like my set of E range tires did. Where do I go from here? I originally wanted to put a set of Buckshot Mudders on and hte tire guy talked me out of them in favor of the Toyos. Thoughts, comments, suggestions? I do tow a 11K travel trailer. Is the ply rating as important as the load rating? (IE 3195# E range versus a 3195# D range)
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I ran a set of Dayton Timberline MT on a 03 F350 285/75/16 load range D but had a high weight rating. I at times had as much as 5,000 lbs cargo in the bed with no issues. the truck was mostly used off road for wood cutting and they held up fine. I am hardly a tire expert just some real world tests.
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The most important number is the load index. 3195# = 121, 3415# = 123, etc. The old letter ratings just do not properly apply to todays radial tires. Meaning there are no 10 ply load E radial tires.
The only place that ply comes into play is sidewalls. When you look at tires that have a E rating, they will usually have a 3 ply sidewall. Most D's will have a 2 ply side wall, but some such as BFG A/T KO have 3 plys though.
It seems one of the keys to helping with cuts and punctures, is to run the proper air pressure for the tire, the vehicle and what you will be using it for. Most people with E rated tires have way more pressure in them than they will ever need. Granted they come from the factory this way.
The only place that ply comes into play is sidewalls. When you look at tires that have a E rating, they will usually have a 3 ply sidewall. Most D's will have a 2 ply side wall, but some such as BFG A/T KO have 3 plys though.
It seems one of the keys to helping with cuts and punctures, is to run the proper air pressure for the tire, the vehicle and what you will be using it for. Most people with E rated tires have way more pressure in them than they will ever need. Granted they come from the factory this way.
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From: Bossier City, LA
StrokeHD, that is kinda my indirect question in a nutshell. Is a 8 ply with a max of 65 psi doing a better job of deflecting the sharp edges of the rocks due to flexing better than a 10ply with 75psi? (stiffer, harder rubber cutting easier?) If so, whydid the Toyo with less than a 1000 miles on it seperate at the sidewall? (was a D with the same load rating of the stock E)
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Ryan, the Toyo problem could have been a fluke....just a bad cure or an interior physical defect. I'd ask around and see if others have had similar issues with the Toyo. I'm an ex-tire guy but it was many moons ago and technology has changed since.
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Well I know that you can get a "bad" anything. However, makes you wonder sometimes when you know what you want and let someone talk you out of it, only to have problems or regrets later.
As far as the Toyo's go, they are a great looking tire. Quiet ride, really great in the rain (standing water on the road, no hydroplaining) don't seem to hold rocks in the tread. Everyone I have talked to swears up and down on Toyo's quality as reguarded to one of, if not the best OTR steer tire on the market for Class 8 trucks. However Pickups are a different animal than an OTR truck. Boy for as bad as I have been cussing the BFG's, 35K is looking awful good right now.
As far as the Toyo's go, they are a great looking tire. Quiet ride, really great in the rain (standing water on the road, no hydroplaining) don't seem to hold rocks in the tread. Everyone I have talked to swears up and down on Toyo's quality as reguarded to one of, if not the best OTR steer tire on the market for Class 8 trucks. However Pickups are a different animal than an OTR truck. Boy for as bad as I have been cussing the BFG's, 35K is looking awful good right now.
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The Toyo tire blowout could of definately been a fluke, as they definately make a decent quality light truck tire. Do you know how many plys the sidewalls were?
I disagree however when it comes to big trucks and Toyo tires, especially when it comes to very heavy loads. I had Toyo's on one of the big trucks I was driving and in my opinion the compound was too soft leading to a very short tread/tire life.
As for tire pressure ratings vs load ratings, that is a area that I have not been able to find a clear answer. It used to be easy. Load range E tires would be 80 PSI MAX and Load range D tires would be 65 PSI MAX. But it appears that this is changing too.
My most recent set of tires are load index 123, 3415# @ 65 PSI MAX. Yet they are still labeled as a load range E tire.
I disagree however when it comes to big trucks and Toyo tires, especially when it comes to very heavy loads. I had Toyo's on one of the big trucks I was driving and in my opinion the compound was too soft leading to a very short tread/tire life.
As for tire pressure ratings vs load ratings, that is a area that I have not been able to find a clear answer. It used to be easy. Load range E tires would be 80 PSI MAX and Load range D tires would be 65 PSI MAX. But it appears that this is changing too.
My most recent set of tires are load index 123, 3415# @ 65 PSI MAX. Yet they are still labeled as a load range E tire.
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From: Michigan
Ryan if those are open country AT then they are 8ply, Toyo also offers a M-55 commercial light truck tire that in the 285 size are 3740lbs rated, however I do not think they make them for the 17" hole.
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From: Tax Happy Hanover Pa
Originally Posted by PowerStrokeHD
The most important number is the load index. 3195# = 121, 3415# = 123, etc. The old letter ratings just do not properly apply to todays radial tires. Meaning there are no 10 ply load E radial tires.
The only place that ply comes into play is sidewalls. When you look at tires that have a E rating, they will usually have a 3 ply sidewall. Most D's will have a 2 ply side wall, but some such as BFG A/T KO have 3 plys though.
The only place that ply comes into play is sidewalls. When you look at tires that have a E rating, they will usually have a 3 ply sidewall. Most D's will have a 2 ply side wall, but some such as BFG A/T KO have 3 plys though.
This isn't hoopla off of joe blows website. This is straight off the sidewall of my tire.
I can't speak regarding the specs on the BFG's. I had them, I didn't like them. They're great for starting fires.
And yes Ryan an 8 ply, 65psi tire will indeed flex better then a 10 ply, 75psi tire. But if your beating these things up at speed, the 10 ply will last longer. If your crawling slow and need the tire to wrap around the rocks, than the 8 ply would be better but it won't last as long. Of course, if you get a bum tire, and the sidewall separates, it really doesn't matter how long they last, huh?
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From: Drain Oregon and Sacramen
[QUOTE=mrxlh]I am having a tire delima. 05 F250 XLT FX4 with 17" wheels. I was running the mastercraft courser CT LT265/70/R17E and got 14k out of them before they were cut all to heck and finally a rock cut a 1-1/2" cut right through the cap. So onto the Toyo delima, got a set of 285/70/R17D and after a
I had good luck with the Goodyear Wrangler 275/70/17RD on my F150 booney basher. Had problems blowing out side walls untill I switched to these and they give good life. Never towed more than 8k with them or had more than about 12lb in the bed.
I had good luck with the Goodyear Wrangler 275/70/17RD on my F150 booney basher. Had problems blowing out side walls untill I switched to these and they give good life. Never towed more than 8k with them or had more than about 12lb in the bed.
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Originally Posted by metalman1320
This is not quite right. I have 315/75R16 Toyo Open Country M/T's that are indeed 10 ply, Load Range E tires. And they have a 3 ply polyester sidewall. They are rated at 3,860 lbs per tire at 65 psi cold.
This isn't hoopla off of joe blows website. This is straight off the sidewall of my tire.
I can't speak regarding the specs on the BFG's. I had them, I didn't like them. They're great for starting fires.
And yes Ryan an 8 ply, 65psi tire will indeed flex better then a 10 ply, 75psi tire. But if your beating these things up at speed, the 10 ply will last longer. If your crawling slow and need the tire to wrap around the rocks, than the 8 ply would be better but it won't last as long. Of course, if you get a bum tire, and the sidewall separates, it really doesn't matter how long they last, huh?
This isn't hoopla off of joe blows website. This is straight off the sidewall of my tire.
I can't speak regarding the specs on the BFG's. I had them, I didn't like them. They're great for starting fires.
And yes Ryan an 8 ply, 65psi tire will indeed flex better then a 10 ply, 75psi tire. But if your beating these things up at speed, the 10 ply will last longer. If your crawling slow and need the tire to wrap around the rocks, than the 8 ply would be better but it won't last as long. Of course, if you get a bum tire, and the sidewall separates, it really doesn't matter how long they last, huh?
<O
</OFor example, I have Pro Comp Xtreme A/T 35X12.5R18. They are a load range E radial tire, 3415# at 65 PSI. The sidewall is 3-ply polyester. The tread is 1 nylon + 2 steel + 3 polyester. This is also from the sidewall of the tire. So while it is not a 10-ply tire, it has the equivalent strength of one.
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From: Tax Happy Hanover Pa
Originally Posted by PowerStrokeHD
This is not quite right either. You do have a load range E tire, this is true. It is not 10 plies however, unless it is a bias ply tire. This would mean it is not a radial tire. A load range E radial tire has a casing strength that is equivalent to that of a 10-ply bias tire, but it is not actually 10 plies.
<O</OFor example, I have Pro Comp Xtreme A/T 35X12.5R18. They are a load range E radial tire, 3415# at 65 PSI. The sidewall is 3-ply polyester. The tread is 1 nylon + 2 steel + 3 polyester. This is also from the sidewall of the tire. So while it is not a 10-ply tire, it has the equivalent strength of one.
<O
</OFor example, I have Pro Comp Xtreme A/T 35X12.5R18. They are a load range E radial tire, 3415# at 65 PSI. The sidewall is 3-ply polyester. The tread is 1 nylon + 2 steel + 3 polyester. This is also from the sidewall of the tire. So while it is not a 10-ply tire, it has the equivalent strength of one.On contrary, one of the guy's that I work w/ has BFG M/T KO's on his Silverado 2500. They have 2 steel, 3 polyester, and 3 poly sidewall. It is stamped 8 P.R., Load Range E.
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OK my apologies, you do have 10 plies total. But when you compare construction of a radial vs a bias, the bias will have 10-ply sidewall as well as a 10-ply tread. We all have 3-ply sidewalls, yet we have a different number of total plies and they are still considered a E rated tire. I have no P.R. number stamped on mine, but I guess it would be 9 P.R.
