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Track day speeds / lack of aero


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Just an idle thought whilst bored at work today,  but at what speeds on a normal track day does aero make a noticeable difference?

For example, the coupe versus a roadster?

Moreso (and in my case) a roadster with race pack - as I understand it a race packed roadster has the same suspension settings as a coupe, or is that not correct?

Going through the permutations -

Roadster with race pack and no roof

Roadster with race pack and hardtop

Roadster with no race pack and no roof

Roadster with no race pack and hardtop

Coupe with no roof

As I say, was a tad bored today... ?


' makes every other roadster look just a little bit cissy...'

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I haven't had the pleasure of driving a Roadster on track but the reality of road car aero is that you're talking about high speed stability not meaningful or noticeable downforce. I doubt anyone could tell the difference between Coupe and Roadster below 120mph in any event. But I would expect the Coupe to feel more 'planted' from there on. The Exige does produce some genuine downforce which is quite rare actually, many sports cars still don't but its in the region of 40kg at 100mph. In percentage terms that's OK as the car is light but in reality could you tell the difference between an Exige carrying an extra 40kg? I doubt many could.

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