Tech Inspection Checklist for HPDE & Track Days

Tech inspection is the safety check every driver goes through before they're allowed on track. An inspector reviews your car and gear to confirm you meet minimum safety requirements for that event. Failing tech doesn't mean your car is dangerous — it usually means one thing wasn't in order. Most failures are completely preventable. After years of attending and instructing at HPDE and autocross events, I've watched the same issues come up over and over.

The Most Common Tech Failures

In my experience across dozens of events, these are the top reasons drivers get turned away:

1. Battery Not Properly Secured

This is the single most common reason I've seen drivers fail tech. The battery must be secured with a factory-style mount bracket — not zip ties, not a bungee cord, not wedged in place. At speed and under hard braking, an unsecured battery is a fire and electrical hazard. If you've relocated your battery, used an aftermarket battery, or done any engine bay work, verify the mount before you show up. Inspectors check this every time.

2. Play in Rod Ends or Ball Joints

Inspectors will grab your wheels and check for play. Any detectable slop in ball joints, tie rod ends, or wheel bearings is an automatic fail. This one catches people off guard because the car may feel fine on the street — but track driving puts significantly more load through suspension components. Check your front-end components before every event season, not just before tech.

3. Racing Harness Without Rollover Protection

Running a harness without adequate rollover protection is one of the most dangerous things a driver can do, and tech inspectors know it. If you've installed a harness, inspectors will look at your rollover protection. If you have an aftermarket roll bar or cage, expect a closer look — there are often class-specific requirements around bar diameter, mounting points, and padding. This is especially true at local club events where the rules aren't always written down. Ask in advance what they need to see.

Car Inspection Checklist

Engine Bay

• Battery secured with factory-style bracket — this is the #1 fail; zip ties don't pass
• No fluid leaks — oil, coolant, power steering fluid
• Brake fluid reservoir full and cap secure
• No cracked or deteriorated hoses
• No loose items left in engine bay

Suspension and Steering

• No play in ball joints or rod ends — inspectors will physically check this
• No play in wheel bearings
• Steering responsive with no binding or excessive play

Brakes

• Brake pedal firm — pump it 3x, should not go to the floor
• Minimum brake pad thickness (typically 3mm — varies by event)
• No severe rotor wear visible through the wheel

Tires and Wheels

• No cords visible — automatic fail
• No sidewall bubbles or bulges
• Lug nuts present and properly torqued
• No cracked or bent wheels

Interior

• All floor mats removed — loose mats can jam under pedals
• No loose items in the cabin (water bottles, bags, anything in footwells)
• Fire extinguisher mounted securely with a bracket if required
• If running a harness: rollover protection must be present and inspector-approved
• Seat secure — no play or movement

Exterior

• Hood latches properly
• No bodywork panels that could detach at speed
• Mirrors present and operational
• Headlights taped (NASA and many HPDE events require this)

Gear Inspection

The order of inspection varies — sometimes inspectors check gear first, sometimes car first. Either way, have everything ready.

Helmet

• SA2020 minimum at most HPDE and road course events — SA2015 is no longer accepted
• Certification sticker visible and legible inside the helmet
• No visible cracks or deformation
• M-rated helmets are not accepted at road course events

Driving Suit, Gloves, Shoes (if required by run group)

• Meets the required rating for your run group
• Certification label intact
• No major damage — tears, melted fabric, compromised zipper

Autocross Tech vs. HPDE Tech

Autocross tech varies more than HPDE tech. I've been to autocross events where the inspector checked only the battery and helmet — that was it. I've also been to local club events where the inspector torqued my lug nuts without asking whether I'd already done it. You genuinely don't know what level of scrutiny you'll get until you're in line.

HPDE tech at organized events like NASA and GridLife is more standardized — they follow a published checklist and the inspectors are trained consistently. Local club HPDE events, like local autocross, can range from thorough to cursory depending on who's running it that day.

The answer to both is the same: show up with everything in order and you won't have to worry about how thorough the inspector is.