Hello all. I recently purchsed a tire pressure monitoring blue tooth system from FoBo Bike. I pressurized my tires according to specs. When I put the FoBo transmitters on the reading is 3 pounds lower than what my pressure guage says.
Now according to FoBo that three pound difference is due to my being a altitude of 6,000 feet.
Any input?

 

We will assume your tire pressure gauge is accurate. FoBo was correct.

Here is a more scientific explanation.

http://www.tirerack.com/tires/tirete...jsp?techid=167

 

Bone Doc,, Excellent link!! I hope kilo and others can grasp the concept.

Karl,, The system you installed is kind of a nice thing to have, but in reality +/- 3# of spec isn't the real issue as folks will run a desired tire psi in a gamete of ranges suited to the individual by any number of factors that can boggle the mind.
What is key to it all,, is to maintain your selected tire pressure, observe tire wear and tire performance at the pressure that suits you best. Where I live at 1005ft elev in northern climes is the temperature swing!
There's a huge difference in 40° mornings and 70° mornings and that can vary in 2 weeks!!
I don't adjust my tire pressure on a daily basis but I do check my tire pressure regularly.
The tool you have makes it easy to monitor tire pressure right?,,
My point is don't sweat about a couple pounds each day until you have an opportunity to see what happens with the average swing in daily ambient temps, riding cold/hot along with your style of riding.