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Anyone running stock sized 245/75/16's on a 8" wide wheel instead of the stock 7" wide ones? Any pictures? I really don't want a larger tire and I'm trying to decide if the stock size is going to look funny on an 8" wide wheel.... Thanks guys. jscheu
 

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The stock size will look silly on a 8" rim.
I disagree... although it's a matter of personal opinion, like anything else.

As long as the offset/backspacing is correct on the 16x8 rim, it would look fine with 245/75R16's. You'd probably want rims with offset somewhere between +30mm (stock offset) to +15mm (which would move your tires out about 1/2-inch on each side).

Jeep Rubicons, through 2006, came stock with 245/75R16 tires on 16x8" rims, and I don't think the 8-inch wheel width looks silly on that tire size...

 

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^ agreed. this site, which I found via another TN thread, says the CounterSteer OffRoad offset is 0mm on the 16x8" rim.

jscheu, this means your Taco stance would move out almsot 1.25 inches on both sides... which would "show off" your skinny tires. With 0mm offset, I agree with menacekustoms that you'd want to go with a wider tire.
 

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^ agreed. this site, which I found via another TN thread, says the CounterSteer OffRoad offset is 0mm on the 16x8" rim.

jscheu, this means your Taco stance would move out almsot 1.25 inches on both sides... which would "show off" your skinny tires. With 0mm offset, I agree with menacekustoms that you'd want to go with a wider tire.
If I am not mistaking, then these rims would move out the tires by more than 1.5" on each side (1.68" to be exact). The stock wheels (at least the alloys) are +30mm offset and 7" wide, correct? That means the offset alone moves it out by 30mm (that's a little over an inch), and then there is another 1/2 inch because of the 1" greater rim width, right?
 

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No, sechsgang, that's not true. The wheel offset ultimately determines whether the wheel moves in or out from the vehicle, regardless of the wheel width or backspacing. In other words, a 7-inch wide rim with 0mm offset and an 8-inch wide rim with 0mm offset will both "stick out" the same distance because the wheel mounting pad/surface is directly in the vertical center of the wheel. The backspacing of those two rims are different, of course, at 4.0 inches and 4.5 inches, respectively... but that makes no difference.

In jscheu's case, he would be going from a rim with +30mm offset to 0mm offset, which is a 30mm change. Since 1 inch = 25.4mm, his stance would be 1.18 inches wider on each side of the truck (2.36 inches overall). IMO, that would look great on a lifted truck with wider tires. But on stock height and skinny tires, it would look a bit odd.
 

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sechsgang, your logic is true if you're only focusing on the outer lip of the rim... which moves out the extra 1/2 inch you mentioned. however, the inner lip of the rim also moved in by 1/2 inch (a direct offset, no pun intended). so the position of the tire itself, as far as overall stance/width is concerned, is decided solely by the wheel offset.
 

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sechsgang, your logic is true if you're only focusing on the outer lip of the rim... which moves out the extra 1/2 inch you mentioned. however, the inner lip of the rim also moved in by 1/2 inch (a direct offset, no pun intended). so the position of the tire itself, as far as overall stance/width is concerned, is decided solely by the wheel offset.
Well, I was looking at the outer lip, as anything else will be difficult to look at.
The section width of a tire varies depending on what wheel width they are mounted on, that's why you can really only look at the lip of the wheel IMO. The manufacturer specified section width for a tire is for a given (fixed) rim width.

The wheel offset ultimately determines whether the wheel moves in or out from the vehicle, regardless of the wheel width or backspacing. In other words, a 7-inch wide rim with 0mm offset and an 8-inch wide rim with 0mm offset will both "stick out" the same distance
I disagree, the 8" rim will stick out exactly 1/2" more than the 7" rim. Note that I said "rim". It's difficult to calculate for the tire. The tire also will stick out more on the 8" rim, just not the full 1/2". The outer edge of the thread should be at the same position for both the 7" & 8" wheel if offset and tire are the same.

At least that's my understanding of this. I could be wrong.
 

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okay, sechsgang, now I understand your point. I agree that the tire section width will change slightly if he goes from a 7" rim to an 8" rim. Here is how Tire Rack explains section width, and the impact of different rim widths.

My logic assumed no significant change in tire width, which obviously isn't 100% accurate. But the extra width of the tire is equally distributed to the inside & outside edges of the tire... which means the vertical center is unchanged. Your logic assumes the 1" extra rim width will produce 1" extra tire section width, which obviously is not true, either. According to the TireRack page above, he'd probably see approximately 0.4 inches increase in section width... which would be 0.2 inches on the inside edge of the tire, and 0.2 inches on the outside edge of the tire.

I know offset & backspacing have been beaten to death many times before, on this site and countless others. So rather than drag this out further, I'll concede to your forthcoming rebuttal. ;)
 

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I disagree... although it's a matter of personal opinion, like anything else.

As long as the offset/backspacing is correct on the 16x8 rim, it would look fine with 245/75R16's. You'd probably want rims with offset somewhere between +30mm (stock offset) to +15mm (which would move your tires out about 1/2-inch on each side).

Jeep Rubicons, through 2006, came stock with 245/75R16 tires on 16x8" rims, and I don't think the 8-inch wheel width looks silly on that tire size...

Either those MTRs are 265s on a 16x8, or that really is a 16x7 rim. My tires look exactly the same as that on my 16x8s.
 
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