I spent 25 years maintaining larger aircraft. We didn't get flat
spots because they have anti-skid systems, but the right brakes and
tires always seemed to wear faster on my company aircraft. The reason
- most of our pilots were right handed. A right handed pilot will
have a stronger right leg and that is the side that got pushed first
and the hardest. You can watch the brake pressure gauge in the
cockpit and tell on the first landing if he is a lefty or not.