Many roads are no go zones for me with the front splitter and lowering caps, also petrol stations where the kerb drop to the road is the wrong angle. Sometimes I have to reverse out the same way I entered!
I removed my OEM shocks and put in spring lowering caps after adjusting the shocks to stiffen them up. I run 18 inch wheels with Pilot sport tires
Steep driveways are impossible.
A couple of months ago I got thrown out of a park in London as the road had 7 speed ramps between the entrance and the car park, because I had to drive the car at a crawl and at an angle using both lanes of the road to get over the humps. The park police turned up and told me to get the hell out! Its great holding up traffic in London
As for the chin guard, its a great help but as of today I only have the central finger left, the other two fingers have worn away!