What's the ideal wheel size for sportscars?

What's the ideal wheel size for sportscars?

at what point are wheels "too big" ?

I recently saw a boxster S with fucking 20" wheels from the factory, with a tiny profile tire almost painted on.

I personally think any wheel size above 17" is unnecessarily big.

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17 or 18s.

Fifth gear or someone tested it

But desu, you can't fit a Brembo big brake kit inside tiny 17" wheels

19's... r-r-right guys?

From an aesthetics standpoint I wouldn't ever go beyond 21's, and that would have to be on a suitably big and ludicrous car too. Seeing shit like 21" rims on an Audi A7 kills so much of the class a car like that has. Speaking solely from practicality, 18" seems like the reasonable maximum to avoid frequent scratching/curb rash.

It varies car to car. IMHO, they'd be the the closest middle ground between the factors of being just as small as possible while still clearing the brakes while also being just large enough that a 40 or 45 sidewall'd tire fits fits naturally. 17's on a Miata would be way too big while putting 18's on a modern Porsche would be way too small.

depends on the car and application.

20's look just fine imo

too much rim make the ride too hard

After actually having driven sports cars with multiple wheel/tyre sizes I can say that the bigger wheels/slim profile tires combos are shit for sports cars, especially older ones that don't have the suspension tuned for them, plus if you go to far over stock it not only fuck's with the speedo, but the gear ratios as well, the sweet spot is either 16"-17", with preference to 17"