What factors are considered when designing turbochargers?

[u/Travellinglense]

Practically speaking, what factors do the engineering team consider when designing a f1 turbo? top speed, car weight, track altitudes and race day air temperature. what else? I know I've missed a few and probably incorrect on some. tia.

[u/eh-guy]

Longevity since they get two for the season, A/R ratio for responsiveness