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Im getting closer to buying new tires as I just paid the truck off! I want to mount 285s on my stock 7" SE wheels. I work at Costco, and the guys in the tire shop are telling me not to do it. They say, with the rim being a 1/2 inch to small, the tread will wear uneven, and the bead will not sit on the rim correctly.

I know this has been done by many CF members, so I want to hear your experience with these risks (such as uneven tread wear).

To make this legal - Yes I searched.
 

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Aside from minor tire rubbing, I havnt had ANY problems, nor have I heard of anyone having any. Im not sure how that could possibly cause uneven wear as long as your wheels are properly aligned :)
 

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Its not an issue that I have seen.. got 20,000 on these Hankooks and they are nice and even on the wear. I just make sure to keep them between 39 - 41 psi - that seems to be where the tire just starts to crown. At first I was really wondering if I should have installed them - mpg and power decrease - then I got the Superchips cortex and got my power back and then some. As for MPG's, there are good days and bad days... I finally said "F-it" its a truck.
 

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typical costco tire shop lmao!:)
 

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I have had no issues with mine, but only have about 10000 miles on them. I did do some minor trimming of plastic and needed a heat gun to manipulate the plastic liner in the wheel well. But because I took the time to do it, I have NO rubbing at all. And as far as MPG's. YOu have to remember that your Odo is off so it shows like your not going as far. It finaly clicked with me when I realized that I was still filling up the tank every 14 days just like I was before I got the tires. The Odo just showed about 60 miles less. So it is saving your resale...that is, if you plan to sell it.
 

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Just because you can doesn't mean you should. It's important to remember that a tires internal construction is all held together by the beads. FWIW - Tires are designed to flex in certain areas of the shoulder, when you pinch a tire on a wheel that is too narrow, you force the tire to flex where it is not designed to do so. This makes the tire generate and hold more heat (a tires worst enemy) which breaks the tire down faster resulting in shorter life and higher chance of failure. Also, every major brand tire is covered by the manufacturer's warranty for workmanship and manufacture defect. This warranty is void if the tire is mounted on a wheel outside the tire manufacturer’s recommendations.

-Matt
 

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Just because you can doesn't mean you should. It's important to remember that a tires internal construction is all held together by the beads. FWIW - Tires are designed to flex in certain areas of the shoulder, when you pinch a tire on a wheel that is too narrow, you force the tire to flex where it is not designed to do so. This makes the tire generate and hold more heat (a tires worst enemy) which breaks the tire down faster resulting in shorter life and higher chance of failure. Also, every major brand tire is covered by the manufacturer's warranty for workmanship and manufacture defect. This warranty is void if the tire is mounted on a wheel outside the tire manufacturer’s recommendations.

-Matt
Well now I know....
 

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Just do it. .5 of an inch is noth'en. If it was a safty problem, it would be the talk of the world. How many autos are out there with a wider tire on stock wheels..... 30 million? I never heard of any thing resulting in crashed due to that.

Firestone tires, under inflated... yeah heard of that.

And FYI, when I got my Kumho's the said my tire fits from 7 inch to 9 inch wide, so there is a tollerance. You might be ok any ways.
 

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i have alittle wider tire on it and no problems, go for it.. Thats why they are at costco shop not anywhere else.
 

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i have 285/75 on my stockers... its not pinched bad.. i think stocks are 8.5'' and they recommend 7 to 9 for 285.. you wont have any problems
 
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