BetterTires
Tires lose less grip under load (heavy acceleration, braking and cornering) - LoadSens Grip Multiplier values taken from GTR2.
Tires no longer lose grip at high speed - SpeedEffects fully disabled.
Other minor changes that may or may not help.
The mod applies to all cars, including DLC ones.
Unpacked game is required
If using JSGME, extract the archive into the MODS folder and enable the mod.
Without JSGME, copy the vehicles folder into your game folder and overwrite.
Use BetterTires_vanilla if using the base game.
Use BetterTires_ovh2 if using Overhaul 2 mod.