>>1754190tires are annoyingly lumpy in my experience, especially one of my gp 5000 that came in like 10+ grams overweight, so the wheel would have to be balanced as a whole including the tire. it would be absurdly impractical to get weight tucked under the tire since you would have to take the tire on and off between adjustments. maybe with high end carbon rims they could make some sort of covered slots to add balancing weights without ruining the aero and aesthetics. but there's still the weight/stiffness tradeoff. external tacked on weights are ugly and affect aero.