That's strange, so like a unmolested scte that is legal width got a DQ because of a camber setting? Or sloppy scte suspension links?
I would have at least protested the call or maybe even not run that series again if my truck was 100% legal. There's a variance between tires, even the same manufacturer, different model... not sure how you could measure width any other way but with only the rims on. All major sct tires are roar compliant, but sidewall width varies between all of them.
I bet if you put your truck at ride height the sidewall bulge is past 296... even with the +0 tekno hex. Measure the rim and you're fine.
Maybe barcodes your fine but panther rattler or aka's with wide insert you DQ? Hopefully that was a little series race using 100% roar rules in a militant way and not a roar race.
Anyway, again... make no difference to me as long as I am hitting the mark with just rims and I feel I am being a fair racer. I'm just curious about how it is handled in other parts of the country.