To what pressure do I inflate my tires? Support November 04, 2020 15:09 Updated Follow The maximum approved tire pressure is 30 PSI (2.07 bar). DO NOT OVER-INFLATE Related articles Who can I contact for support with my gas powered pressure washer? Can I use different voltage batteries in my tools? Where can I find manuals, part lists, and diagrams? The valve stem on the tire of my pressure washer won't stay out and I cannot put air in my tire. How can I get air into the tire? Can I see a list of DEWALT Built in USA products? Comments 0 comments Please sign in to leave a comment.