Hey Dyna Bead users
Road Captain
Joined: Sep 2008
Posts: 723
Likes: 2
From: Nc
Tourer
Joined: Oct 2009
Posts: 270
Likes: 2
From: West Palm Beach, Florida
I work as a Toyota Tech. My boss (owner of the dealership) decided to test out Nitrofill. He had two tires on his personal car filled with Nitrogen and the other two filled with normal compressed air from our shop compressor. Ran that way for six months, checking the pressures every two weeks. No difference found after six months.
The air we breathe is 78% nitrogen, 21% oxygen and 1-2% everything else. As for the pressure change from temperature, think about it. The pressure changes in the average tire (car or motorcycle) is about 20-30 degrees. There are three places where extreme temperature changes can make a real difference in pressure in tires. Aircraft, where extreme altitude changes can equal 50-60 degrees change or more. The space shuttle for the same reason, and NASCAR, where a very slight change in air pressure can have a major impact on the handling of a vehicle.
How many of us are out there doing 197 MPH? Meanwhile places are charging $40 and more to fill your tires with nitrogen. And what about the air that is already in the tire when they fill it with nitrogen? They don't vacuum the air out before filling it. The basic principle of nitrogen in tires is scientifically sound, but realistically unsound.
The reason shops that sell nitrogen push it is that they can then offer free refills and top ups, thereby getting you to return there once a month so they can inspect your vehicle and up sell more maintenance and repairs.
The air we breathe is 78% nitrogen, 21% oxygen and 1-2% everything else. As for the pressure change from temperature, think about it. The pressure changes in the average tire (car or motorcycle) is about 20-30 degrees. There are three places where extreme temperature changes can make a real difference in pressure in tires. Aircraft, where extreme altitude changes can equal 50-60 degrees change or more. The space shuttle for the same reason, and NASCAR, where a very slight change in air pressure can have a major impact on the handling of a vehicle.
How many of us are out there doing 197 MPH? Meanwhile places are charging $40 and more to fill your tires with nitrogen. And what about the air that is already in the tire when they fill it with nitrogen? They don't vacuum the air out before filling it. The basic principle of nitrogen in tires is scientifically sound, but realistically unsound.
The reason shops that sell nitrogen push it is that they can then offer free refills and top ups, thereby getting you to return there once a month so they can inspect your vehicle and up sell more maintenance and repairs.
Grand HDF Member
Joined: Oct 2004
Posts: 3,842
Likes: 502
From: Northern WV
In the latest issue of Motorcycle Consumer News Dyna Bead company took issue to MCN's negative evaluation of their product. DB said something to the effect that MCN's Honda 599 had vibration issues and Dyna Beads won't work under those conditions, the beads wont help an out of round tire, and that over time the beads find the lightest spot. Also that perhaps MCN didnt install them correctly and their evaluation really didnt prove they dont work. And Dyna Beads website has proof the beads work.
MCN responded saying they bought the beads and installed them as instructed and they arent beholding to the manufacturer. That Hondas 599 isnt a real smooth motorcycle, but many other motorcycles arent either. They also said the beads would be moving around to different locations during braking and stopping and stood by their recommendation to not use them and instead get a proper weight balance. They advised Dyna Beads websites anecdotal evidence did not prove they worked at all. Instead they challenged them to provide prove to their statement Dyna Beads can up to double tire life claim.
MCN responded saying they bought the beads and installed them as instructed and they arent beholding to the manufacturer. That Hondas 599 isnt a real smooth motorcycle, but many other motorcycles arent either. They also said the beads would be moving around to different locations during braking and stopping and stood by their recommendation to not use them and instead get a proper weight balance. They advised Dyna Beads websites anecdotal evidence did not prove they worked at all. Instead they challenged them to provide prove to their statement Dyna Beads can up to double tire life claim.
Elite HDF Member
Joined: Feb 2008
Posts: 3,817
Likes: 2
From: Novi MI
Road Master
Joined: Jul 2008
Posts: 771
Likes: 0
From: Edmonton, Alberta
I work as a Toyota Tech. My boss (owner of the dealership) decided to test out Nitrofill. He had two tires on his personal car filled with Nitrogen and the other two filled with normal compressed air from our shop compressor. Ran that way for six months, checking the pressures every two weeks. No difference found after six months.
The air we breathe is 78% nitrogen, 21% oxygen and 1-2% everything else. As for the pressure change from temperature, think about it. The pressure changes in the average tire (car or motorcycle) is about 20-30 degrees. There are three places where extreme temperature changes can make a real difference in pressure in tires. Aircraft, where extreme altitude changes can equal 50-60 degrees change or more. The space shuttle for the same reason, and NASCAR, where a very slight change in air pressure can have a major impact on the handling of a vehicle.
How many of us are out there doing 197 MPH? Meanwhile places are charging $40 and more to fill your tires with nitrogen. And what about the air that is already in the tire when they fill it with nitrogen? They don't vacuum the air out before filling it. The basic principle of nitrogen in tires is scientifically sound, but realistically unsound.
The reason shops that sell nitrogen push it is that they can then offer free refills and top ups, thereby getting you to return there once a month so they can inspect your vehicle and up sell more maintenance and repairs.
The air we breathe is 78% nitrogen, 21% oxygen and 1-2% everything else. As for the pressure change from temperature, think about it. The pressure changes in the average tire (car or motorcycle) is about 20-30 degrees. There are three places where extreme temperature changes can make a real difference in pressure in tires. Aircraft, where extreme altitude changes can equal 50-60 degrees change or more. The space shuttle for the same reason, and NASCAR, where a very slight change in air pressure can have a major impact on the handling of a vehicle.
How many of us are out there doing 197 MPH? Meanwhile places are charging $40 and more to fill your tires with nitrogen. And what about the air that is already in the tire when they fill it with nitrogen? They don't vacuum the air out before filling it. The basic principle of nitrogen in tires is scientifically sound, but realistically unsound.
The reason shops that sell nitrogen push it is that they can then offer free refills and top ups, thereby getting you to return there once a month so they can inspect your vehicle and up sell more maintenance and repairs.
Road Captain
Joined: Jun 2009
Posts: 696
Likes: 1
From: NYC
...No difference found after six months... The pressure changes in the average tire (car or motorcycle) is about 20-30 degrees...
Elite HDF Member
Joined: Aug 2007
Posts: 4,265
Likes: 99
From: Northern VA
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Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
yeah, okay. not doubting that. but don't you check your tire pressure more often than once every 6 months?