Convertibles & roll bars
Can you bring your Miata, Boxster or Z4? It depends on the track and the organizer. Most groups use the "broomstick test."
| Track / organizer | Rule | Per |
|---|---|---|
| Atlanta Motorsports Park | Street convertibles that are equipped with some form of factory roll protection can be accepted, only in novice or intermediate categories. For an advanced driver to use a convertible in "red" group, the car must have aftermarket roll-bar and harnesses. | Chin Track Days |
| Barber Motorsports Park | Street convertibles that are equipped with some form of factory roll protection can be accepted, only in novice or intermediate categories. For an advanced driver to use a convertible in "red" group, the car must have aftermarket roll-bar and harnesses. | Chin Track Days |
| Circuit of The Americas | Must have factory roll-over protection or aftermarket protection on all convertibles. | Chin Track Days |
| Daytona International Speedway | Experienced solo qualified drivers may drive convertibles after signing an additional waiver. Novice drivers in OEM convertibles are NOT ACCEPTED. If novice, the car must be either OEM hard-top, or equipped with 4-point or better roll bar. | Chin Track Days |
| Homestead-Miami Speedway | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Lime Rock Park | Open cars must be equipped with a roll bar meeting the following specifications: (i) the roll bar must be of sufficient height to ensure that the top of the driver’s helmet sits below the line from the top of the roll bar to the top of the windshield (commonly referred to as the “broomstick test”) and; (ii) the roll bar must be fixed and visible at all times when the vehicle is on the track. | Chin Track Days |
| Mid-Ohio Sports Car Course | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| NCM Motorsports Park | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Nelson Ledges Road Course | Street convertibles that are equipped with some form of factory roll protection can be accepted, only in novice or intermediate categories. For an advanced driver to use a convertible in "red" group, the car must have aftermarket roll-bar and harnesses. | Chin Track Days |
| Ozark International Raceway | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Pittsburgh International Race Complex | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Road America | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Michelin Raceway Road Atlanta | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Sebring International Raceway | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Summit Point Motorsports Park | Convertibles must be equipped with roll bars or hoops, either OEM or aftermarket. Convertibles without some form of roll protection will NOT BE ACCEPTED . | Chin Track Days |
| VIRginia International Raceway | Generally, VIR does not permit street-stock convertibles. Convertibles must be equipped with a fixed roll-bar or fixed structural hoops behind the seats on roadsters/cabriolets. Please email if unsure of your car compliance. | Chin Track Days |
| Watkins Glen International | Convertibles/roadsters may be driven in OEM configuration, no modification necessary. An additional waiver is required. | Chin Track Days |
| Lime Rock Park | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| Palmer Motorsports Park | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| New Hampshire Motorsports Park | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| Watkins Glen International | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| New Jersey Motorsports Park | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| Thompson Speedway Motorsports Park | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| VIRginia International Raceway | All convertibles require a fixed, visible roll bar that passes the broomstick test (deployable bars only if locked up at all times). | SCDA |
| Track Night in America (SCCA) | Roll bar to SCCA Time Trials Safety Level 2 strongly recommended. Up to 2005 MY: documented factory rollover protection or SCCA-TT-compliant aftermarket bar ("style" bars not OK). 2006+ MY: no bar needed if OE engine and ≤4 cyl (stock turbo OK) or naturally aspirated 6 cyl; otherwise rollover protection required. T-tops/Targas are not convertibles. Some tracks (VIR, NJMP) require more. | Track Night in America |
| SCDA (Sports Car Driving Association) | All convertibles require a fixed, visible roll bar that passes the broomstick test. | SCDA |
| NCRC (American Racing Club) | No open-top cars (convertible, t-top, sunroof) without roll protection that passes the broomstick test; failures removed with no refund. | NCRC |