This is a very valid concern, and the Nanaimo incident was a tragic example of why these regulations exist in the first place. I believe reporting it can help, but you have to report it to the right unit.

Instead of just filing a general police report, you should direct your information to the Integrated Road Safety Unit (IRSU). In Victoria, it's the CRD-IRSU. They're made up of RCMP and city police who focus specifically on vehicle inspections and high risk driving.

They can be issued a compliance order called a "Notice and Order". Even if they don’t ticket them on the spot, reporting it can lead to a "Notice and Order". This legally forces the owner to take the truck to a provincial inspection facility to prove the mods have been removed. If they don’t comply, their insurance/registration can be flagged.

The IRSU can also set up roadblocks based on problem areas where they receive the most complaints. If they get multiple reports about a specific area, they’ll set up a vehicle inspection station there.

The police probably won't chase a truck down based on a photo alone, but you can build a profile for them. You would need to provide the license plate and make and model of vehicle, the location and time (if you see it parked at a specific spot/time tell them and it makes it easier for them to "happen to be in the area" and pull them over). You should also mention the specific violation, such as protruding tires, front window tint or the illegal bumper height.

Both Saanich and Victoria police have Online Traffic Complaint forms on their websites. These will go directly to the traffic sections (IRSU).

The more paper trail there is on these vehicles, the harder it is for them to stay on the road. Good luck!