jmimac351 3 things JM First off do you know that those tires you are driving on without a balance are PER WEARING out your drive train?
If the worst of the vibration is in the front end, wheel bearings, tierod ends, the rack and pinion itself,( internal gears ) the steering system up to your hands.
If its in the rearend, depending on the rearend if solid axle both rear axle bearings, the axle tubes, over time the spider gears in the carrier. If a jag rearend the outter hub bearings, and the u joints to them.
2 nd thing is that you are dangerous enought to drive a car with this problem at high speeds, you said you drove 80 mph and the problem is worse. If you are on a race track at this time, Fine. If you are out on a street or highway with other people around you, and cobras are people magnets, doing 70 mph. It's very possible the a tire could seperate and you have one hell of a ride to look forward too, I just hope that you take no one with you. Not sure what you are worth to your wife and kids, your car is worth from 40-60k dollars and all the time and work you put into it. The worst part is you are only worth 1,000.00 dollars. This is the cost of a TOP set of tires for your car.
I am not so worried about you but someone else that ends up in the wrong place at the wrong time.
As far as stenciling tires that a choice, I do think the safety factor comes into play, or maybe a class action suit again GY for maken poor tires may change there way of thinking. This kind of thing requires the DEATH of about 5-10 people before anything is done. The last thing Man rules, a statement where some men with small brains, big balls, and going through there middle age adjustments have as an excuse for being dumb.
I have 2 out of the 3 things listed above, small brain and middle age, I am just not foolish enough to risk someone elses life for $1,000.00 dollars.
Have a good day JM. Ps I have seen over the last 10 years more people get hurt from the don't worry about it thinking. 1 dead, 1 burnt over 20% of his body, mostly hands feet, arms, face and neck, 3 others ending up in hospitals for weeks. 1 guy was in traction for 8 weeks. Broken back. Have a nice day JM Rick L. New rule, get smarter everyday. I at lease try.