Pneumatic tires with a 45 degree valve require a valve extension so that you can pump up the tire on the M24Pro electric mountainboard rims (in this case the hubcap). In addition, the valve and valve cap always stick out too far.
“It was a bit like a Roman chariot with blades on the side” 
but the solution was so simple:
put the extension on the inside!
I can get by well with the electric pump, nothing gets in the way and the valve rests on the inner rim.
It’s also an advantage if you lay the board on its side. I’ve been testing it for 4 weeks now and I’ll keep it that way
—Mark Rockshock
