Some airspace is necessary in a gas tank to allow for expansion. If there is not enough airspace on a hot day, some gasoline may be expelled through the vent, instead of air. Air compresses, liquid does not.

 

I'd rather fart my tank.

 

I will agree that on the bikes with larger tanks that are more capable of going longer distances on a tank of fuel it (burping) is not needed as much as it is on the smaller tanks.

Even when I went to AK (2000) the longest distances between gas stations as about 100 miles.
However, there used to be a stretch of RT 50 (I believe) in Nevada where the distance between gas stations was 160 miles and that would be pushing the limit for some bikes and totally out-of-range for others.

In most areas of the U.S. there appears to be more and more 24/7 fuel stations popping up so even those who ride or drive at night usually have no problems finding fuel. I just found the "burping" thing interesting.

 

Where do you put your gas cap while burping the tank?

 

And how the he11 do burp a tank on a trike? S'pose it's not necessary since the tank is level?

 

OOh OOh, changed my mind. I never burp my tank and never have.

I wanna be part of the cool club.

NOT!!!!

Bozos....

 

I heard of riders who baby their bikes, but to burp them too?

 

 

When I'm at the pump, too busy finding a place to put my gas cap, hang my helmet, removing my finger-less gloves, covering my a$$-less chaps, checking messages on my smartphone, wondering if the fuel is correct octane, digging for my wallet, getting out my "jiffy" stand protector, covering the tank with rags...so I don't spill a drop of fuel on the sweet/freshly waxed paint & then going in to take a whizz. Adding a tank burp just made my fuel stop at least 30-45 minutes...dammit!