Hint: Get to top speed faster:

To get to your top speed faster, go into your garage then go to "Tune up/Dyno". After that, go to "Circuit" and select the ECU. Make levels 3, 4, and 5 as low as possible; with 3 the lowest. Do a dyno run and look at your speed. Compare this to the first time you did it. It should increase a lot, helping in all your races.