Originally Posted by
FBinNY
Rim straps technically aren't part of a wheel. As Andrew pointed out, they're a lagniappe included with many higher wheels.
It's sort of like when you pick up a new car at the dealership. They don't have to, but many will deliver it with a full tank, and the Lexus dealership is more likely to than the Yugo deslership.
Filling up the tank could easily double the value/price of a Yugo.