Originally Posted by Trickster
The most comprehensive analysis I have ever seen on the subject,
It says as I have always suspected of washable filters
Hope this helps
I'll stick with paper
Yep got to agree with Snowbum again......not the first time I got good info out of his website!
I'll stick with paper too , but I screened the air intake, so less bug parts on the filter and inside the air box!
BMW's recommendation of replacing the filter at 20,000Km......
But it depends on where and how you ride too.....faster means more air and possibly dirt going through your filter! My K100RS, only replaced the filter twice in 130,000 Km.......my R100GS, once in 90,000+. Never noticed any ill effects either.....!
But I do look at them every once in a while, shake out the dust and very very very lightly
blow through them with compressed air!
But I am considering using them Pre-filter sacks the off road guys use, will look into them next time I am in "Town" and see if I can fit them on my bike.
And if I can avoid the PITA of removing,washing and oiling the filter on my bike....that means a couple more hours on the road.....!