That's a front wheel, but still...I agree with sch911 that they may not be fully seated, or you have some sort of a wheel spacer, or something like that. Perhaps they're different or aftermarket wheels with a thicker center section.
This should have nothing to do specifically with the tire per se; it's just the wheel and the hub. On my '98 Ford E-SuperDuy, the studs extend a good bit further beyond the end of the lug nuts than this when the wheels are properly seated, and there's plenty of thread left to put on the wheel simulators. I think the wheel sits a little further on the hub, too, comparing the inner sleeve, but I can't verify that until this evening. I can post a couple snapshots if that would be helpful.
I would not be entirely saddened if my wheel simulators suddenly stopped attaching properly and I had to get rid of them. They look kinda pretty, but they are a bit of a pain when doing anything with the wheels or tires.