Time Trial Wheels are getting into the expensive end of TT equipment spectrum, but they do provide some good time savings and look very PRO. Having an aero front wheel will make the most significant difference and will cost the least of the two. Most of you probably already have a set of deep dish aero wheels for racing anyway. A rear disc wheel is one of the last items you should spend lots of money on if you’re looking for big savings. However, if you want to look cool this should be the first item on your list.