[QUOTE=HPJeep;8477498If I back out of my driveway in my vehicle and run over my bike I think it would not matter what kind of steel is used if the bike is mangled. Thanks![/QUOTE]if the objective is running over the bike with a car and mangling it, your best bet is to go to the dump and get a pre-mangled bike. The reason that bikes made high tensile steel are heavier is that they are afraid it will fall apart at the joints. So they make it heavier