ALWAYS a good idea to check tire pressures, AND tire condition!
IF YOU TEND TO MAINTAIN NOTHING ELSE ON YOUR VEHICLE always make sure you have good tires AND good brakes!
It is a bad day when your truck won't run, or if it breaks down mid-trip.
It is a VERY BAD DAY when you can't stop or you lose control of your vehicle while at speed!!
IMHO the thump check is a good 1st check (looking for flats) & probably good enough for a mid-trip check (to ensure that all tires still have air), but I ALWAYS use a guage to check and ensure accurate pressures in all tires prior to any road trip. That's what the tool is designed for & I'd have to guess that the guage will be more accurate that even the most experienced tire mechanic! (I'd put $$ on it!)
ALSO be sure to frequently do a visual examination of all tires. Inspect the tread, as well as the outside, inside, & middle sidewalls of all tires. Outer sidewalls are usually more vulnerable to checking/cracking from sun exposure and curb rubbing, but middle & inner sidewalls can be easily damaged by debris & road/trail hazards too! You DON'T want to ever have to try steering a Deuce that blows a front tire doing 55+!!!
As with any large tire equipped vehicle, a blown front tire at speed is very hard to recover from! Not having power steering doesn't help this situation. I always make sure that I have my newest & best tires mounted on the 2 front wheels!
I've never lost a tire on a Deuce, but I have experienced a front tire failure (caused by debris on the track) on one of my race cars while at speed. That car took off in a direction that I had very little control over, and after hitting a tire wall it became a parts donor for my next race car... THANK GOD I had a strong cage, racing harness, helmet, & a little LUCK!! (I managed to walk/limp away from the mangled mess...)
"Cheers!"
-Bear-