I think the basic design is the same on most trucks built in the last 20 years. No large space around the engine so stick it behind the front wheel arch. Manufacturers don`t give a stuff and what is the significance of a £200 bill for a lump of plastic on a money earning vehicle ? The fact...
Were they as a result of damage by the same rock letting water into the steel braces on the adjacent tyre causing rusting and delayed failure? The worst damage on modern trucks is usually fronts blowing the air filter housing to pieces.
To hasten the natural process you enhance friction by the following physical factors--abrasive property, pressure and speed. Gritty, light soils don`t work as well some with body to provide pressure and the faster you travel the degree of friction increases.
There never was unless you paid them cash. Try rounding up the migrants in Calais and give them a job. You just want to give them assisted passage to come here and scrounge off our benefits. France is the worst black economy in Europe . The Greeks cannot hold a light to your lot.