Ron, you only need to see the aftermath of one wreck at highway speed caused by a wheel failure---especially if it happens in a turn (and the one I saw did). Fortunately---if there is a fortunately about it---the one I saw involved only one vehicle and the driver. But it was just as gruesome as you would imagine a sideways rollover wreck to be. This was in the early 70s and there was no retaining rail to keep the vehicle on the road...no poles, no rail, nothing as it was a smaller state road. The speed limit was still 70. Whether it was a Dexstar wheel, I don't know but I recall the patrolman saying it was caused from using unsafe wheels.
And not that I saw it personally but a few years ago a friend in NM lost a relative to a wheel failure. Vehicle was a Jeep and wheel was not stock. Same thing...wheel broke and Jeep rolled over. This time it went through a barbed wire fence and ended up in a rocky field. Driver was wearing a seat belt but the Jeep was open and it didn't matter. The fellow told me the state patrolman said it would have been quick...maybe 5 to 10 seconds. No time for regrets there.
One of the folks here (Bill Hanlon) had a wheel fail not long ago. He posted pictures of it. It was not a trailer wheel but a wheel designed and made by a reputable firm as I recall. Seems the inside broke loose from the rim and I want to say he heard it making noise as he was driving. Maybe he'll show up and fill in the blanks.