I'm sure there is a reasonable explanation for this but just got done with a long trek and filled up. DIC said I spent 16.6 gas pump said I put in 18.14. Someone is lying to me!

Although I must say my milage has been off since I put new tires on. Figured that was due to them being slightly taller then the old set though. On this tank I made it 411 miles and DIC said I averaged 24.4 when normally on this kind of trip it should have been more like 26-28. Any thoughts?