Cwerdna,
I live in the UK and my leaf have done over 112,000 miles.
Mwalsh,
The original brushes size are
2mm thick, 6.5mm hight, length not sure as it had worn down to 6mm. My guess is it's about 10-15mm.
I brought the brushes from eBay. The smallest size I can find
4.5, 6.5, 20mm. I have to...