Why the difference between offline and online tuning?

[ionstriker]

So i was tuning my cerbera speed 12 for top speed.I was able to make it touch 429km/h but offline in speed test it only does 423km/h Why this difference?

 

[GTP_CargoRatt]

Short answer: physics.

 

[Tvensky]

which one is better Online or Offline "physics" ?

 

[symustafa1996]

No.

 

[Vendrah]

At online the car is more unstable but it does the corners fast, so its the better one.