The phrase "high curb" refers to a raised edge or barrier at the side of a road or street. It is used as a reference to the elevated part of the pavement that helps prevent vehicles from veering off the road onto the sidewalk. Full definition
Partly that's down to a combination of slightly higher curb weight — at 5,128 pounds, it's around 300 pounds heavier than the B7 — and BMW's AWD tuning; however, it's also a side - affect of the Alpina's twin - turbo V8. (slashgear.com)
Although body - on - frame yields slightly higher curb weights than the near - universal unibody approach - where the frame rails are integrated with the body shell - it can be more durable. (articles.orlandosentinel.com)
That's plenty to lug around the extra weight of the Guard version, as this specially prepared S - Class is fitted with all sorts of reinforcements to the structure, the body shell, and the glass, contributing to a significantly higher curb weight. (automobilemag.com)