Real Racing 3 Hints for iPhone/iPad
If your vehicle has been damaged you will notice a decline in it's performance, the only way this can be fixed is to put the car in for repairs.
Look for corners in the track that you can drive across to flatten out the curve so you can go through it faster than you normally would.
To improve your overal times try to race with the braking assist on at least low as it will make a huge difference in your speed when cornering.
Ignore the resprays as they are expensive and do not improve the performance of the car. Just leave your cars the default, random colours.
You can sometimes save a little money by not repairing or postponing maintenance. There are plenty of races that don't require that a car be at full strength to win.
Only upgrade when it is necessary so you conserve your money. If you do have to upgrade, just upgrade one car fully in each circuit.