I complained at the Infiniti Dealer that my 2007 G35X was riding much rougher after I brought 'er in for a 15k service. I checked the tire pressures with 2 pencil type gauges, it seemed the tires (Goodyears RSAs) were filled to high. They both gave different readings - so I "avereged and kept the pressure cold at 34 pounds. The ride was pretty harsh, harsher than I recall. Just got my car back for a Tranny Valve body replacement - the tech said the tire were filled at 38 pounds according their guages....??? They brought down the pressures to specs of 33 lbs. The car rides better, more like b 4. Now I'm in the market for "quality " maade in the USA tire guage. Any recommendations folks?

 

I've often wondered that myself. Too bad Consumer Reports doesn't do a tire pressure gauge review.

 

Accutire or Snap-On digital gauges are your best bet.

 

Thanks, visited the Accutire site and they actually give +/- % for many of their gauges which is rare. Looks like the best they claim is +/-1% + 0.1 psig which plenty accurate for a tire. I am assuming the +0.1 psig is because of the increments on the gauge. Some others have the 1% + 0.5 psig.

I am a little afraid to visit Snap-On because of $$$. I am sure that they must be good though.

 

Ohh I've got a kick *** Michelin digital Gage. They fill my wheels up here at 28psi, which is nuts, so I always have to drop the pressure down to 34psi and it;s perfect

 

Did the tech say if he checked the psi cold or within a few hours of the car being driven?

Any decent digital gauge should be accurate +/- 1lb psi. I've always had trouble getting consistent and accurate readings from the pencil type gauges, especially the cheapies.

If you don't want digital, try the rotary type. This one also has an available extension for making it easier to check the spare psi.
http://www.autosportcatalog.com/inde...b-000423c27407

 

Not a fan of the digital guages. What happens if the battery dies? This happened to me this past winter. Leave a battery powered guage in a car when the temp drops to zero and you've got no guage when you need it most. A sudden drop from the 40's to 0 can lower tire pressure by 4+ PSI and trip the TPMS sensors. Then you reach for your guage and oops! I only bought the digital guage because it was all I could find one afternoon. Useless.

On the other hand a nice high quality brass dial guage has never failed me. Brookstone sells one with a glass bezel and rubber coated body with a rotating valve and pressure relief switch for about $15. I keep dial gauges in all my cars. The $30 digital guage went in the trash.

 

MoJ: No tech didn't say, but they kept the car overnight (replaced a tranny valve body too). I just bought a new dial guage, checked the pressures and they are now at spec about 33-34 lbs. The ride is better than it was - so the tires were probably filled too high, I guess. It is the tires though, I checked Tire Rack's surveys for the Goodyear RSas, common complaint on the quick dertiorating ride with thread wear. They're only thread rated at 260!!