Thanks. I have never seen a pair of legit Backflip 4S tyres, but these are definitely not thin. I bought them because someone on Facebook said they weren't thin. Bending the tyre back to glue it really required a good amount of force.
They use adaptors to alter the wheel hex size, so I have my doubts how long they're going to last.
I got them from
here. At the time they were the cheapest including shipping that I could find.
I weighed one, and it was 305 grams. How does that compare with legit Backflip 4S?
EDIT: I've just found
this list that someone put together. Looks like the Backflip LPs are 280 grams. Is that correct?