JHZR2
Staff member
I just got rid of my old pair, bought in 2002, only because the newer ones nest inside one another and take up half the space.
Mine were always kept in the garage so no exposure to uv, etc. if one kept them outside the outcome could be vastly different.
I'd anticipate that they would get brittle and shatter. Even then, it's unlikey they would do so all at once or whe. Sitting statically under load. I'd be more afraid of weak metal undergoing a collapse due to a variety of metallurgic, weld, and design factors, than plastic ramps. Metal ramps typically have no structure underneath. Plastic ones have a lot, so a failure would transfer forces in various ways.
Mine were always kept in the garage so no exposure to uv, etc. if one kept them outside the outcome could be vastly different.
I'd anticipate that they would get brittle and shatter. Even then, it's unlikey they would do so all at once or whe. Sitting statically under load. I'd be more afraid of weak metal undergoing a collapse due to a variety of metallurgic, weld, and design factors, than plastic ramps. Metal ramps typically have no structure underneath. Plastic ones have a lot, so a failure would transfer forces in various ways.