I bought some Formula Fours 99 two years ago and really loved them
now that I have burned like 5mm off them I bought another set, Formula Fours 99 also, and I have to say these new wheels feel a lot harder than my old ones (mind you, both sets are 54mm)
the difference in hardness is very notable to me, so did the formula change or something? did anyone notice a difference between older/newer f4's?