Tech Inspection

Once you arrive at the track, the safety or tech inspection should be a simple formality because you or your mechanic will have thoroughly inspected your car before leaving home. A tech sheet is provided online.   A special sticker is placed on a car after inspection to assure that the car has passed tech. Schools usually place a non-removable sticker on your windshield that can be scraped off after the event. A smaller sticker is also placed on your helmet, to show it has cleared tech.  Insurance waivers must be signed at the entrance to the track and at the registration area. HPDE officials will check again at the drivers meeting to ensure everyone has signed waivers. You must cooperate, as the insurance carrier backing the event requires this.

HPDE Tech Inspection List

Tires should have at least half of the original tread and no less than 3/32-inch of tread. They must clear the suspension and fender edges and be "S" rated (112 MPH) or better. Sidewalls must be in good condition with no foreign objects lodged in the tread. Plugged or patched tires are not recommended. No bias-ply tires are allowed. 
Brakes must have at least 50 percent of original material. Semi-metallic pads are recommended. Brake calipers, hoses and lines must be undamaged. Rotors should be within specifications. Flushing lines with fresh brake fluid before each event is recommended. A minimum Dot 4 brake fluid is also recommended.
Steering should not have excessive play. Power steering should be free of leaks. Front-wheel drive cars should check CV joints for leaks, and CV joint boot damage.
Wheels must be free of cracks or damage. Torque wheel lugs must meet the proper specifications. No hubcaps or trim rings allowed.
Original seatbelts or race harnesses are required in good condition, with no cuts or frays, and mounted securely. Your passenger/instructor will also need belts and must match the driver's belts. Shoulder harnesses are recommended. 
Battery terminals must be tight, in good condition, and taped. The battery must be securely mounted and have no leaks.
Have at least one rearview mirror - two are recommended.
The engine compartment must be free of leaks, including antifreeze, fuel, and oil. A radiator catch can is required (factory containers are acceptable).
Trunk: Spare tires and jacks may be removed or securely tightened down.
No loose objects are allowed in the interior. Remove anything that could shift if your car is upside down. A fire extinguisher is recommended but not mandatory.
Window glass should not be cracked or broken.
The entire exhaust system must be in good condition and securely mounted. Most events do not allow open exhausts. Tunable mufflers are normally allowed and should not exceed 89db at Lime Rock.
Open cars/convertibles: Will require roll bars at certain tracks while others want the top up or down. Factory installed roll over bars are generally acceptable in the lower run groups.