Well I did say it took me longer to attach them to the forums than it did to create them, and also offered to do a tutorial showing everyone how to do similar sort of textures using Photoshop.
Edit: Have done a snowy ground for you wheel gator. Wasn't too sure exactly what you wanted but this one should be okay for dirty snow packed roads.
If anyone wants me to do an easy to follow tutorial on how to do things like this with Photoshop then just give me a shout and it's done!
Duncan Edwards is the one person who, even today, I really felt inferior to. I've never known anybody so gifted and strong and powerful with the presence that he had - Sir Bobby Charlton