Bones STF Wheels Q

[RooR]

Already tried the search function, but no luck. Right now I'm riding on Bones STF 52 mm the Fire Hydrant ones. My question is, what's the difference between the different Bones STF formulas: the Hydrant, Tagger, Padlock, and Pro Series?

And what is the hardness of the ones I'm ridin on now the Hydrants 52 mm? I'm practicing my powerslides and I can see where the bumps on the asphalt are tearin up my back wheels. I wouldn't exactly call em 'flatspots' but they are cuttin up my back wheels pretty bad. Are the wheels I got hard enough, or is this somethin I shouldn't worry about?

Thanks in advance.

[Greenday]

The difference is the graphic on the wheel.

The bones wheels are "stf" hard.

[TrAnCe]

STF stands for street/tech formula. Apparently, they should be hard enough, but ashphault? cmon man. If you like sliding, go to a flat carpark on a dew-ey morning, and turn just a little bit. (make ur wheels slip out.. soo much fun) But any wheel u ride on ashphault will die fast.

hydrant, padlock, etc are all exactly the same, bar the picture.

[Ramp]