Check Those Tires!
You're not the only one under a ton of pressure. Your tires have grown tired of your commute and are showing as much as wear as your three-piece suit.
The Remedies: Give them a once over before your big cross-country excursion. Road temperatures get extra hot during late spring/early summer, so the pressure will rise in your tires. Signs you have a problem? Look for dry rot or large bumps around the joints. Minor issues can get major fast, resulting in flats or blowouts in the middle of a desert straightaway with nary a tow truck in site.
Tire tread depth is also an issue, so consider the penny test to see if you're in trouble yet. Simply turn the penny upside down and insert it between your treads. If all of Lincoln's head is exposed, it's time for some new tires.