In racing, car numbers often don't really seem to matter much unless of course you happen to be one of the superstar drivers that have become identified by that numeral on your door.
But for virtually every driver out there, they started their racing career with a number of choice. It could have been a number used by their father or grandfather, or it could be a number that just seemed to fit with their personality.
I know as a kid, whenever I dreamed of climbing aboard a racecar at Toledo Speedway, it always was a No. 16 car. That number is my birthday, so it just seemed to be a perfect fit. Plus it seems to be a pretty good choice as it's won a lot of races in the Camping World Truck Series and four championships with Ron Hornaday, Mike Bliss, and Travis Kvapil. Oh, and Greg Biffle seems to do pretty good with it in the Sprint Cup division too.

Eventually the No. 88 went to the DiGard team -

After 30+ years, a Keselowski again ran a No. 88 car when Brian's younger brother Brad was hired to drive the JR Motorsports Nationwide Series car in 2007. Brad had some great success with that number, winning a handful of races and contendending for a championship in both of the full-time seasons he used the number.
Now, it's time to go back in time to 1982. After ten successful years with the No. 88, the DiGard team had acquired a new sponsor. This was just before the era when a team would simply add another team, so their previous sponsor Gatorade was free to move to another team. The DiGard team had a good relationship with the Gatorade executives and when the company requested to take the No. 88 along with them to a new team, DiGard said goodbye to the number and chose another, this time going with the No. 22 to use on it's newly sponsored Miller High Life cars.
In the first season using the No. 22, Bobby Allison won six races and scored his only NASCAR Winston Cup Series championship.
I think you can see where I am going with this...
After departing JR Motorsports at the end of the

Some people might not believe in the numerology, and I'm not quite sure I buy into it completely either. But Darrell Waltrip surely did when he won the Daytona 500 in his 17th try on February 17, 1989 while driving the No. 17 car. The numbers surely are aligned for Brad Keselowski to drive to his first Nationwide Series championship in 2010.