Mileage or actual costs? What are the pros and cons of each? My first two years I've been using mileage bacause it's easier and seems to cover everything. But this year I am driving less business miles and now need new tires and front end work which will be pushing $1500. If I deduct strictly by mileage this year I won't be able to cover everything. What do you guys think. Is it time for me to switch to the actual costs deduction? How big of a PITA is that?