Tire/Rim size important?

Stock tires on my '04 2500hd are Lt245/75 R16 on a 6-5/8" wide rim.
I would like to put Goodrich All Terain T/A 265/75 R16 tires on these rims
but the 265 tire specs call for a rim 7" - 8" wide.
the difference in tire diameter between these tires is 1.2".
I'd like to install the larger tires but wonder if there would be a serious or significant safety/performance problem because of mounting them on the smaller rims? I suspect I should just go with a stock size tire but I have seen this very combination (265 on a stock rim) on the road and it looks pretty good.
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I would never go narower than the recomended rim width! The 'wander' experienced could get pretty bad and dangerous! I suggest going no narower than a 7inch rim(inside of bead lip to inside of bead lip is where it is measured) with an 8inch being allot better.
My personal preferance is to run a rim no narrower than the tread width. I have gotten the best tread wear, handling, and traction doing so.

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lucky for me me 93 silverado came stock with 10" rims so anything from a 215 to a 300 fits comfortably. :)
On Fri, 10 Dec 2004 08:49:02 -0600, "Shades" <shades_1970(at)netins(dot)net> wrote:

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What truck came with 10inch wide wheels from the factory??? I have seen 9.75 wheels on 70's camper specials.
Also, you would tear a 215 up if you mounted it on a 10inch wide wheel! Barely over 8inch sidewals on a 7inch wheel and under 7 inch tread width... THAT is begging for a blow out!!!

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1993 chevrolet silverado sportside
and yes I had 215's on the front and ran them for roughly 4months before I threw 235's on for the winter.
On Fri, 10 Dec 2004 23:29:49 -0600, "Shades" <shades_1970(at)netins(dot)net> wrote:

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10inch wide wheels from the factory???

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I can tell you with absolute certainty that:
A 1970 Chevelle SS 454- LS6 and LS7 came with ten inch wide rear rims.
Refinish King
"Shades" <shades_1970(at)netins(dot)net> wrote in message

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From the factory? Chevelle Rallys is what it had and if memory serves, they were 7inch...maybe 8. Factory 10inch though, never heard of it in all my years!
I have never come across a FACTORY LS7 Chevelle anywhere! in person, on the net, any of my GM Gurus, or in any publications. I have heard that an LS7 could be purchased from a dealer and installed in '70, but as a factory option...?
If you can prove either of these, I would appriciate it!

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I personally rode in 2:
Returning Viet Nam Vets, ordered them as they were "Shorting" I think the LS7's were COPO cars, but the LS6's had the 10" rear wheels, I worked on these cars when they were new.
Refinish King
"Shades" <shades_1970(at)netins(dot)net> wrote in message

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So in other words you cant prove they were factory, but maybe dealer installed?

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I'd have to travel back in time:
But they were the 70 Chevelle wheels, Spoked steel.
Maybe they were widened by a vendor?
Refinish King
"Shades" <shades_1970(at)netins(dot)net> wrote in message

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I have been doing some more digging to try to prove you right and me wrong...nothing either way yet. This might wind up being unresolved. Oh well...

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There were and still are a lot of wheel wideners:
The 70 LS6's and only 2-1970 LS7's I worked on, had 10' rims.
We put N-60-15's on them in 1974.
Refinish King
"Shades" <shades_1970(at)netins(dot)net> wrote in message

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