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I just bought new tires for my 1996 Chevy k1500. They are 31×10.50×15 Goodyear wrangler durtracks and so far they are great. My problem is they started with 35 psi in them and they were over inflated the outside edges weren’t toching the ground but only in the rear tires. So I dropped it down to 30 psi and they are a little better but still not quite there. So I dropped them to about 27 psi. And still same thing. Anyone know what I can do? These are my first completely brand new tires I have ever owned and I don’t want to just let them go.
My thoughts are because my bed is so much lighter that it might have something to do with it. Or that maybe I just need to run them and rotate them regularly. I don’t know how much I dare go down in psi or what’s safe. My other thought is maybe since I ran them a ways and it rounded the sides a little maybe they need time to wear back to normal. I have only put maybe 100 miles on them if that. My front ones are just fine. I had a allignment when I got the tires. And the rear is a solid axle anyway. What are your thoughts should I drop it some more? I’m going off a chalk test at first. Now I’m going off the dirt the out side inch or so is clean and the middle is dirty.
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How wide are the wheels?
I am guessing that it should have 235-75-R15 tires on it with 15×7 wheels. If you only changed tire size it could be too wide for the wheel. A 31×10.5×15 should be on a minimum 8″ wide wheel. When the tire is too wide for the wheel it will round out (crown) more resulting in what you describe.
Also Duratracs are at least a 6 ply tire, a little stiff for your truck in my opinion. As far as the your worry of the wear, 100 miles will do nothing to a tire unless something is horribly wrong. I would not run less than 30 psi for your truck and just rotate them regularly, every 6 to 9 thousand miles is the industry recommendation.
Otherwise having just the outer 1/2 to 3/4 inch not touch is fine considering the tires are new and haven’t broken in yet.
ok. I just talked to the people that put them on and they want me to bring my truck in tomorrow and they will look at it. I will probably air the tires back up for the trip down. I didnt know there was a break in period but that makes sense.
the original tires were actually 245/75/16 i believe. but i put the 31×10.50×15 on it. thats what i had on it before these tires and they were wearing fine. I dont know how wide they are though I got the rims second hand and didnt realize that was a factor.
I will go tomorrow after work and see what they say thanks
From my experience, Goodyears don’t wear as well as other tires. Not saying they are a bad tire, but they don’t last as long as most. I speak from personal and professional experience with multiple brands of tire. The best truck tires I personally ever had were BF Goodrich.
[quote=”Chevyman21″ post=127801]I speak from personal and professional experience with multiple brands of tire. The best truck tires I personally ever had were BF Goodrich.[/quote]
What happened Chevyman you used to be cool then you ruined it by saying BFG tires are good, you’ve changed. lol
Personally I think BFG is one of the most overrated tires out there, in all of my work I have never come across a good one of their tires.
My own truck has Hankook on it and the wifes car has kelly
[quote=”brokemechanic3000″ post=127875][quote=”Chevyman21″ post=127801]I speak from personal and professional experience with multiple brands of tire. The best truck tires I personally ever had were BF Goodrich.[/quote]
What happened Chevyman you used to be cool then you ruined it by saying BFG tires are good, you’ve changed. lol
Personally I think BFG is one of the most overrated tires out there, in all of my work I have never come across a good one of their tires.
My own truck has Hankook on it and the wifes car has kelly[/quote] Lol hey man it is what it is. I just had good luck with them and so have other people that I know. Usually when I see a prematurely/unevenly worn tire of any brand it’s due to improper maintenance practices regardless of make(lack of proper alignment, tire pressure etc). Goodyear tires from my experience don’t hold up.
A 31×10.50R15 is most definitely at least load rated “C”.
More aggressive “all-terrain” truck tires won’t have a contact patch the whole width of the tread until after a period of time. It’s just the way they’re made. Also being a load rated tire they are constructed stiffer as opposed to a non load rated non all-terrain tire of similar size.
Now the inflation. There is no quick answer. Somewhere in the depths of Goodyear’s site you should be able to find an inflation table which will show load capacity at “X” inflation. The problem is that a load rated tire, let’s say an “E” rated tire at 35 PSI will actually have less load capacity than the same tire in a non load rated or “P” tire. So you really have to do a bit of research to determine if at 30 psi the tires on your truck actually have the capacity to carry your truck. I thought a had a chart bookmarked but apparently I don’t and my internet is being lame, so yeah.
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