The mod in action:


After creating several videos of all the new stunts I could find in GTA IV, I wanted to be able to ride otherwise impossible lines. This mod allows tons of new tricks to be performed. Such as: wall rides, easier flips, huge air.

90% of the cars are faster, however most of the development has been focused on fine tuning the handling of the Sanchez, Turismo, Bus, and Jetmax.

Most vehicles have:
faster acceleration
more power
higher top speed

The Sanchez also features:
longer travel on the suspension
stiffer suspension
easier to lean and throw the bike around
lower and further back center of mass

The Turismo also features:
better traction
stiffer suspension
stronger brakes
lower and further back center of mass

The Bus also features:
tank like ability to plow through traffic
more resistance to impact
lower and further back center of mass

The Jetmax also features:
insane power
it naturally sinks to allow for more control before it easily flies in to the air

I have also created custom textures that change the logos and images on the: Sanchez, Turismo, and Bus
These require Spark IV to install

This mod has been tested using the steam version of the 1.3 patch. It should work for other versions. Let me know if it does.

Tools used: GTA IV Handling Editor, Spark IV - Thank you CoMPuTer MAsSteR and Aru respectively.

I would highly suggest using a vehicle spawner like GTA4CarSpawner by Alexander Blade or at least cheating to spawn the best vehicles