How can i squeeze the last few mph in F&F Expansion 360 speed traps?

Hello everyone…so one thing i tried doing was getting some superb speeds in the Fast & Furious expansion for the 360…I got to top 50 for all of the traps and zones, but I want to try to get into the top 25 for all of them…any tips or tricks i could try? Also this is for the Xbox 360 version. My speeds are currently:

Docks Speed Zone-----6th-----McLaren P1-----172.90mph
East Nice Speed Trap-----26th-----McLaren P1-----152.86mph
Nice Center Speed Trap-----49th-----McLaren P1-----218.33mph
West Nice Speed Zone-----1st-----Nissan GTR ‘12-----153.17mph
North Docks Speed Trap -----12th-----McLaren P1-----173.80mph
Nice Harbor Speed Zone -----14th-----McLaren P1-----158.54mph
South Sisteron Speed Trap-----50th-----Bugatti Veyron-----206.21mph
North Sisteron Speed Trap-----14th-----Nissan GTR ‘12-----245.67mph
Nice Shoreline Speed Trap-----17th-----Nissan GTR ‘12-----248.81mph
Sisteron Speed Trap---------------34th-----Nissan GTR ‘12-----250.34mph
Sisteron Highway Speed Trap-----39th-----Nissan GTR ‘12-----262.68mph