B-G Racing 4" Analogue Tyre Pressure Gauge BGR517

B-G Racing 4" Analogue Tyre Pressure Gauge BGR517 gives race teams, workshops and track-day drivers a large, battery-free dial for tyre-pressure checks. The dual PSI/BAR scale, quick-bleed valve and flexible hose support a straightforward checking routine at the car.

Harris Race Radios™ is an authorised B-G Racing dealer sourcing genuine equipment directly from B-G Racing, with NZ and AU stock. Contact us for current availability and dispatch location.

Why Choose a Large-Dial Motorsport Tyre Pressure Gauge?

The 4" dial offers a larger viewing area than the compact 2.5" models. For pit-lane checks, endurance-racing preparation and workshop tyre-pressure checks, choose the BGR517 when clear analogue readings and battery-free operation matter more than a compact gauge body, selectable digital units or session logging. It is a practical race-car tyre pressure gauge for crews who want to read and record pressures without managing batteries.

Our selection advice is straightforward: choose the large dial for visibility, not because dial size guarantees greater accuracy. Read the pointer square-on to minimise viewing-angle errors, use suitable lighting at night, and compare instrument accuracy separately from scale resolution. For track-day use, follow the same cold and hot checking routine described below.

Features and Specifications

• Part number: BGR517.
• Large 4" analogue dial, listed as 100 mm.
• Dual scales: 0–60 PSI / 0–4 BAR.
• Listed accuracy: 0.5 PSI / 0.03 BAR.
• Listed scale resolution: 1 PSI / 0.1 BAR.
• Quick-bleed button valve for controlled pressure reductions.
• 457 mm (18") flexible black rubber hose.
• 360° swivelling quick-press chuck.
• Ergonomic handle and protective rubber bumper.
• Listed net weight: 550 g.
• Battery-free operation.

Repeatable Tyre-Pressure Checks

Tyre pressure is part of the setup baseline alongside tyre condition, temperature, vehicle load and suspension geometry. Start with your tyre supplier's recommended cold and hot targets, then use recorded measurements and driver feedback to refine the setup for your car and conditions.

Use the same gauge, units and wheel order for consistent comparisons. Record cold pressures before running and hot pressures promptly after sessions. Note the timing, weather and setup changes because tyres cool between checks. Seat the chuck properly, wait for a stable reading and recheck after bleeding pressure.

Accuracy and scale resolution are different specifications. A larger dial helps readability, but does not automatically make a gauge more accurate. If readings become questionable, compare the gauge with a trusted reference and inspect the hose and chuck.

Compare the B-G Racing Gauges

Compare each instrument's accuracy separately from its display type. The BGR517 is a pressure gauge, not a tyre-temperature probe or session logger.

Who Is It For?

Professional pit crews, endurance teams, circuit racers, club competitors, track-day drivers and motorsport workshops wanting a large analogue dial. Confirm that your required working pressures and measurement needs suit the listed range and accuracy.

Practical Motorsport Expertise

Every B-G Racing product at Harris Race Radios™ is personally selected and used by our team. Aaron Harris is a professional race driver and race engineer: Barcelona 24 Hour class winner in 2013, Bathurst 1000 and 12 Hour competitor, BMW Race Driver Series champion, and race engineer for Earl Bamber Motorsport, Porsche Carrera Cup Australia, Asia-Pacific and NZ, Toyota Gazoo Racing NZ, Matt Stone Racing and TekworkX. Read Aaron's motorsport career.

Rex Harris is a qualified Radio Telecommunications Engineer and Approved Radio Certifier for New Zealand and Australia, with motorsport radio experience dating from 1975. For practical gauge advice, call Aaron on +64 27 449 9654 or email aaron@harriscomms.co.nz.

About B-G Racing

B-G Racing equipment is developed by Brown & Geeson, combining engineering experience with motorsport knowledge. Its setup range serves professional teams and club racers.

Frequently Asked Questions

Why choose a 4-inch gauge over a 2.5-inch gauge?
The larger dial provides a larger viewing area for tyre-pressure checks. Choose the BGR517 for readability or a compact model where gauge size matters more.

Does the BGR517 need batteries?
No. It is a battery-free analogue tyre-pressure gauge.

Is analogue less accurate than digital?
Not automatically. Compare the accuracy specification and condition of each instrument. Display resolution and measurement accuracy are different.

How often should I check pressures at the track?
Record cold pressures before running and hot pressures promptly after sessions using a consistent wheel order. Recheck after adjustments or significant condition changes, following tyre-supplier guidance.

Does it measure tyre temperature or record sessions?
No. It measures pressure. Compare the wider range for temperature probes and logging equipment.

Where can I buy genuine B-G Racing equipment in NZ and Australia?
Harris Race Radios™ is an authorised B-G Racing dealer sourcing directly from B-G Racing, with NZ and AU stock. Contact us for current availability and dispatch location.

Related Equipment and Advice

Compare gauges, pyrometers and loggers in our Motorsport Tyre Pressure Gauges collection, browse Tyre & Setup Tools or explore the B-G Racing equipment range.

Read our motorsport wheel-alignment and car-setup guide and browse the alignment equipment collection. Contact Harris Race Radios™ for advice tailored to your car, discipline and setup goals.

Expand Your Tyre-Management Kit

For tyre-wear checks alongside pressure readings, add the B-G Racing Digital Tyre Tread Depth Gauge. If you need recording or additional measurement functions, compare the RaceSense gauge and optional needle-pyrometer configurations, Alfano TyreControl 2 pressure-and-temperature gauge and Prisma HPM5 pressure gauge with app. Check the exact probe and package configuration before ordering.