My thinking was to buy 2 new tires and use the one that has the cut for a tire swing or something. Sell it to a competitor. LOL!!!
Just doesn't make sense to me to use a bad tire as a back up. For trailering the car... Good use for it.
Just buy 2 tires and use the good tire as a spare race tire. Put that tire with the cut in it on a stock wheel so that it doesn't accidentally get put on the car as a race tire.
As far as buying your tires camber cut... Some folks claim a lot of tire wear with the Federals. Makes me wonder if it is worth doing. Your call I guess.
Steve
PS,
Yes, I was being sarcastic.