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Calibrate tire gauges
- Thread starter johninct
- Start date
I think snap on has a racing tire gauge that's supposed to be accurate within +/-1% around $70
Seems like a waste. When you're serious about tracking a car you take temperature readings across the tire with a probe. You're looking for even temps outside, inside and center. That means your alignment and pressure is good. Maybe for drag racing raw psi is a useful piece of info? I have no clue about that stuff, drag racing is all Greek to me.
RCStocker
Well-known member
The cheap ones can be 5 pounds off. Any gauage will be ok because it will give you the same reading on all 4 tires. I always over inflate by a few pound. It makes for a stiffer ride in my Town Cars but I get better gas and ware milage. When it is snow and ice out I drop the pressure a couple of pounds under. I have never had snow tires. I do have chains but I seldom use the. I use them when going up in the mountians in California. They are manditory at times. I never get stuck. Just lucky.
sberry
Banned
Iwas wondering wtf,,, how does a tire gain air,,, well my brother can seem to find some old pc of **** gage vs one I have set for all to use, I nearly had to hit him with 2x4, quit using that junk. Use the one I provide which I have calibrated.
signcrafter
Well-known member
- Joined
- May 9, 2012
- Messages
- 12,469
I went through this a couple weeks ago. I made a fitting that I plug into my regulated shop air. It has a schrader valve on it and I set the shop air to 30 PSI and put the different gauges on it. Here is the thread and I am going to try and upload some pictures to the thread. http://www.garagejournal.com/forum/showthread.php?t=162851
mayday0017
Well-known member
Seems like a waste. When you're serious about tracking a car you take temperature readings across the tire with a probe. You're looking for even temps outside, inside and center. That means your alignment and pressure is good. Maybe for drag racing raw psi is a useful piece of info? I have no clue about that stuff, drag racing is all Greek to me.
This doesn't make sense.... Middle of tire will heat up fast from being heavy on the gas or brakes, outside of tire heats up from turning, but then the WHOLE tire heats up from carcus flex (most important thing) and surface heat isn't accurate and drops off QUICK so you better come flying into hot pit and have someone there with probe to get your work done.
I will point out I don't have experiance in the car racing world but I do own a race school and teach & licence people to race sport bikes on road course tracks. There in motorcyle world PSI is king, temps can be useful to identify issues but mostly everything can be identified by reading the tire and looking at your tire gauge so it better be a good one....
My 2 cents