Clearance to run 18X9.5 0mm offset on 09 Denali?

Joseph Garcia said:

There is a tire clearance and offset calculator web site that the folks here use to get a first look at potential issues associated with tire and rim size changes. I do not have the site bookmarked, but I'm sure that one of the folks that does will post the link for you shortly.

Good luck on your search and selection!

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14RamHemiSport said:

Thank you. I found one online, but im not sure what i am reading. Seems to imply that it will work fine. Seems like there is plenty of room for a 9.5 wide wheel with 0 offset. its not that crazy. it currently has 22's (which i believe are 9" wide) on it now with no issues.

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The Raven said:

I think it will fit too...but I bet it's going to be real close. My wheels are 18x9 +18 with 275/70/18s and I had to do A LOT of trimming. They fit now with zero rubbing ever, but I can't go any wider in wheel, any lower in offset, or any bigger in tire. I'm maxed out in every dimension. Your tires are quite a bit smaller so that will give you more room, but offset seems to have the most dramatic effect on clearance on these trucks simply because of where the tight spots are.

I had to do a lot of work on the front and rear outer corners of the front fenderwells in order for mine to not rub. That's where your tight spots are going to be so look at your clearance now and do some math to figure out where your new wheel/tire combo is going to sit in relation to your current. That's how I figured it out, and then did the trimming beforehand so I wouldn't get a call from the dealer after they had mounted and balanced all four tires.

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The Raven said:

I think it will fit too...but I bet it's going to be real close. My wheels are 18x9 +18 with 275/70/18s and I had to do A LOT of trimming. They fit now with zero rubbing ever, but I can't go any wider in wheel, any lower in offset, or any bigger in tire. I'm maxed out in every dimension. Your tires are quite a bit smaller so that will give you more room, but offset seems to have the most dramatic effect on clearance on these trucks simply because of where the tight spots are.

I had to do a lot of work on the front and rear outer corners of the front fenderwells in order for mine to not rub. That's where your tight spots are going to be so look at your clearance now and do some math to figure out where your new wheel/tire combo is going to sit in relation to your current. That's how I figured it out, and then did the trimming beforehand so I wouldn't get a call from the dealer after they had mounted and balanced all four tires.

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HiHoeSilver said:

Are you lifted/ leveled?

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The Raven said:

2/1 level.

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HiHoeSilver said:

And still a lot of trimming for the 33s at 275, huh? That might affect my idea.... thanks for the info.

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The Raven said:

Keep in mind i'm running aftermarket wheels that are both wider and lower offset than stock. But yeah i needed to do the Norcal mod on the back outer corner of the front fenderwells, remove the front splash guards, and make significant cuts and modifications to the front outer corners too.

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