PM from Brandons48:
Ok, first step is to open LFS, then open cheat-o-matic.
The cheat-o-matic should have a drop down menu, select "Live For Speed".
In LFS go to the pits and change your lock to say 20.0 , then leave the pits.
Open COM and type in 20.0 , then search.
When the search is complete return to the pits in LFS and change the lock to 21.0 .
Re-open COM and search for 21.0.
Repeat these steps until you get the "Ka-Ching!" Message on COM, then change the value to whatever steering lock you want.
It will change the car's lock in game. Returning to the pits will reset the lock, if this happens simply open COM and press "set" to put the lock back to whatever value you wanted.
45* is probably the best.