18x9.5 +12

Yes it’s a +12, are the tops of the fender arches different on your Demon/Dart fenders than my regular Duster fenders?
That’s the exact roller I borrowed, I played around with it for a few minutes. Seems to work a lot better than a hammer or the “baseball bat” method.

That's crazy! But if it works it works! Mine are +30 compared to stock 73+ disks, so, that's 18mm further out on the rim, plus the extra tire width from the 285.

As for the Duster vs Dart/Demon fenders, I don't think so. I have actually run my 18x9's with 275/35/18's with both my Duster and my Demon fenders. The Duster fenders were more limiting at the rear corner of the fender opening though, so I was more concerned with that than I was with the top of the fender. The heights of the opening are the same. The Duster fenders do have that little factory flare to the lip, but I don't think it adds much if anything. To be honest, the bigger clearance issues I've had have been at the front corner of the opening.

The only thing is that my Duster sat a little higher when it had the Duster front end, since I've been running the Demon front end I have lowered it some which has necessitated the fender lip roll. Initially I went from Duster fenders to Demon fenders with no rolling, and only the treatment on the lower front corner with the extended fender brace and lip trim.

I'll be interested to see if any minor rubs come up on the street. The only place mine ever hit now are the rear of the frame at full steering lock, they just kiss the frame there with the lack of steering stops on my QA1 LCA's. I did get a couple of squeaks on the body after I lowered it a bit more before I rolled and pushed the fenders.

Here's the same wheel combo on with the Duster fenders, you can see the clearance compared to the pictures above with the Dart fenders. Not 100% fair because I did push the fenders when I rolled the lips on the Dart fenders.

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