Moroso 89570 Tire Pressure Gauge, Dial Type, 0-100 psi Review

I have the Moroso 89560 (0-60 psi) gauge, which is fine for my day-to-day needs (regular auto tires, 30-35 psi).My compact spares, however, operate at 60 psi.Since you can damage a gauge by exposing it to excessive pressures, I wanted a gauge with a higher range.The compact spare pressure doesn't need to be spot on, and I didn't want to shell out $40, so I bought a $16 unit.I had to return it for a leaky valve and noxious fumes.I looked at other gauges for <$20, and their reviews expressed similar complaints (I suspect several of the gauges are the same, just branded and packaged differently.).So I've reluctantly shelled out $40.I have a separate review on the model 89560.Here are some additional comments.

(1) Range.The 89560 reads from 0-60 psi.Tick marks are in 1 psi increments.Moroso gauges have slightly larger faces (~2-1/4" diam reading area) than most gauges (~1-7/8" diam reading area); you can estimate readings to the nearest 1/2 psi.The 89570 reads from 0-100 psi.Tick marks are in 2 psi increments; you can estimate readings to the nearest 1 psi.Many high pressure gauges range from 0 to 120, 150, or 160 psi.With the larger ranges and smaller dials, you can estimate only to the nearest 2 psi or so.

(2) Comparison of readings.I compared the Morosos 89560 and 89570 and Accutire MS-5510B (digital gauge) for pressures in the ~30 psi range.All three read within 1 psi of each other.The 89570 works well as a backup gauge for regular auto tires.

(3) Construction quality.The mechanical construction of the 89560 and 89570 are the same. Hose, bleed valve, and fittings are heavy-duty industrial grade. In the 89560,the hose was too stiff and the socket was too tight in the beginning (got better with use). In the 89570, the hose and socket were "just right" right out of the package.Probably due to manufacturing variation.No leakage at fittings or bleeder valve. As mentioned in my 89560 review, the gauge (especially the plastic dial cover) is a bit flimsy, especially for this $.

(4) Rubber boot. Get the rubber boot for sure. Even if you don't bang the gauge around,the plastic dial cover tends to pop off; the boot will keep it in place. Others have mentioned installing the boot without removing the hose and bleed valve assembly. This may be dicey.The cutout in the boot is only about 1/2" square.The hose and bleed valve assembly is about 1" diam at the grip and at the bleed valve.The rubber is tough, but I'd be concerned about tearing it. You need to unscrew the hose and bleed valve assembly from the gauge very carefully.This unit was also way over-torqued. Don't grab the gauge body and twist, you'll break it. Use two wrenches. Be patient.

(5) Hold reading. The gauge does not hold the pressure reading when the socket is removed from the valve stem.This is OK.Holding the reading is important only if you can't read the gauge when it is seated on the tire.This gauge has a hose and a full-swivel socket fitting...no problems reading the gauge regardless of the position and angle of the valve stem.

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Product Description:
Moroso tire gauges are the air pressure gauge of choice for racers worldwide. Each Moroso tire pressure gauge is individually calibrated for accuracy within 2%. The dial face is easy to read, while the hardened swivel chuck rotates 360° for positive valve stem attachment. And the finger operated air-bleed valve allows you to release pressure quickly for precise settings and to get you back on the track and staged for your next lap.

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