A couple of weeks ago I had tires mounted for my GS. I took my 2 gauges to have Derek test and calibrate them. Come to find out that both of my gauges read 6.5 pounds low! I was expecting to be off a little but not this bad. This would explain some odd front tire wear that I have been experiencing.

Handle your gauges with care and have them tested regularly. I bought a new gauge and reads about 6 pounds higher than the old gauges, so it is about right.

btw.......all the gauges used are all made by Accugage

So who is Derek, where does he work, or what type of place does he work at? So that those of us who have guages can go to a similar place near us to have them calibrated.

When I got an Accugage, the first thing I did was collect all the various cheap pen guages from the cars and house, and compared them all together.  I was surprised to find that 4 out of 5 pen guages pretty-much agreed with the Accugage.  I don't really trust cheapo guages, but I'll trust 3 of them if I buy them at different shops, and they all agree.

My thought was that I should keep about 4 cheap guages; every year, I should buy a new one, then compare all 5 and throw-out the one that disagrees the most.  That way, I can have a cheap guage on the bike, and still trust it, for about $2/year.

The Accugage is nice and easy to use, and great for dialing-in (say) 33.5psi, but you wouldn't want to carry it on the bike, and you would still want to cross-check it every year.  I'm a klutz, so I keep mine wrapped in rubber on the floor, next to the air pump.  I rarely pick it up more than a few inches to check the tires, so I can't drop it very far .

Quote from: scratchSo who is Derek, where does he work, or what type of place does he work at? So that those of us who have guages can go to a similar place near us to have them calibrated.

Derek is a Bridgestone dealer, but not his full time job. Races WERA and pimps tires whenever he can. Always has to have an accurate gage with how picky some racers can be.

He can get any tire Bridgestone makes but mostly stocks race compounds.
//www.dbmotorsportsracing.com

A tire dealer. Makes sense. Thank you!