Have your little wheels stopped turning? Replace them with Brompton part QEZWSET-NR. Comes with rubber stop to prevent unwanted rolling.
On Versions E/L, EZ Wheels are effective but for fully functional, smooth rolling, nothing beats a full-set with rack.
If your Brompton has a rack, we recommend getting the full set of four wheels
Looking to try something new? Take a look at Brompfication Eazy wheels