Here is some pictures of what treads look like dirty and clean.
Tiger 1:



Pershing:



too bad i forgot the camera till i got done the bulldog...

more pics http://s15.photobucket.com/albums/a3...RC/04-06-2008/

Looks good. tracks are pretty much self cleaning except when you have to load the tank on a rail car or back in the motor pool. Looks like you also have some mud in the Pershing wheels which a lot of guys forget. Mud also accumulates on the sprocket housings (as you have it) and on the swing arm housings, shocks stc. Your Tiger really looks good.

I cleaned up the road wheels on the tiger a bit. not clean clean but nothing on the outsides of the wheels to gunk up etc. Also good news is the bulldog is not dead. I thought i smelt fried board but it works okay now! still got a couple days of assembling etc to go.

I run mine over wet pavement or a 1/4 " of standing water to get the mud off..clean enough for me

Last time I run the PzIII on mud, had to wait 24 hours for the mud to dry, then washed the tracks using the shower with warm water.

I could have built a bonsai garden with everything which came off the tracks...

I do pretty much what arachna does, run them in very shallow water, running gear is neat and clean in a couple of minutes

I drove my son's Tiger1 in a spot of semi soft wet clay one Saturday afternoon
the track marks left was had great effect I thought [8D]
like driving in fresh snow & leaving your track marks behind except in mud

spent the next 3 hours cleaning it with a used tooth brush to remove all the small stones & caked on clay before he noticed it missing
- never again [&o]

Super-spin on a brush 'welcome' mat works well too!

I simply don't clean the tracks....but only lubricate the tension arms.

I have some old shag pile carpet in the shed and I spin the tank on that

See i normally do not clean them. but when the tank refuses to move anymore, i take them apart. also I store them on my dresser... not a place to have sandy tanks on it.

You could also put them in the top rack of a dish washer. I know of a couple 1/6 tankers that have done this when moving to different countries. Customs will impound it if theres too much dirt on the vehicle.