Has anyone ever had a whisper wash leave tire tread marks on concrete? I have noticed the tread marks for a while. The area under the tire looks like it is getting hit by the spray bar. I generally run at about 200 degrees. I have been using the same whisper wash for about 3+ years. I didn't check the tips on the spray bar to see if something is wrong. Other than the tires it seems balanced and cleaning well. Anyone run into this before?
