Lately i have been trusting the HD gauge with the tread depth I cant get a pencil gauge to give me the same reading twice in a row esp when it gets cold

 

Accu-gage is the only company I trust to be consistent. Get a dial one with a hose and a psi max not too much over where you need it but do not over pressure the gage as the air chamber is brass and if you put too much pressure in the gauge it can bend over time and the needle won't return to zero. They used to be made in USA and absolutely the best, you'd see them in all the best teams pits, don't know anymore though.

 

+1 the autometer gauge is the one we trusted for the race car tire, bought one for use with the bike, when at the indy shop he has two of them and between his two and mine they are all with in a pound of each other.

 

That's a good point. I have a racing tire guage that I've used on the couple of Corvettes that I've owned and, if they're good enough for the Vettes, they'er good enough for my HD.

 

I use the Harley-Davidson gauge with the tread depth indicator and use it exclusively and carry it on trips.

 

Just thought are you comparing apples to oranges. Meaning to always test them the same way. Check in the cool morning one time, after a ride, parked in the sun, you will never get consistent readings.

Also have you used all four gauges at the same time?

 

Garage kept bike (yeah, it's pampered!).

And, yeah, they were all taken within just a couple of minutes of each other this morning when the tires were cool.

 

I use ONE gauge. Don't know if it is accurate or not. Makes ME feel good though.
For you? Take all four readings, add them together and devide by four.
Use the gauge that is closest to the average.
(You ever worry that the octane level in you fuel is not quite right?)

chuck

 

+1 on accugage. Mine seems to be pretty close. I check once a week.

 

This works well.............Advance auto parts