No Entry Fee or Racing License Required for LRDC Members to Participate in Club Races.

Every Lime Rock Drivers Club  member becomes a really good high performance driver, many members want to take it further and go racing. This can be achieved in various ways, but the start for everyone is to get a racing license. 


The LRDC Race Series was created for those that want a fun, lower cost, less time consuming format that doesn’t require a formal license, just a sign off by the Club Director.  Wherever they end up racing our mission for our rookies and existing members is to elevate them to be the best racers that they can be. 

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     Spec Miata Safety 

     Rules and Regulations 

  • Helmets must have a Snell or FIA 2015 rating or later

  • Hans device required

  • Fireproof suits, gloves, shoes and socks

  • Fire bottles & fire systems up to date & full

  • Harnesses & seats up to date with proper functioning releases

  • All body panels secure & tight

  • Wheels & tires in good condition

  • Brake lights working

  • No holes between the engine compartment and the driver's cabin

Spec Miata Racing Regulations 

Grid position for race 1 determined by qualifying (all groups). Grid position for race 2 will be determined by qualifying. Overall winner will be determined like golf; lowest score over the two races. Points to be awarded by finishing position.

  • All Mazda Miata race engines will be checked on a portable rolling road dynamometer at some point in the racing calendar. The top 3 cars in each class plus any other cars that show abnormal HP will be measured.

  • Restrictor plates will be inspected and sealed during scrutineering

  • All Mazda Miata’s will be subject to random weigh-ins.  

  • Spec Miata’s are to use the SCCA mandated Hoosier race tire.

  • All competitors may use a maximum of two sets of tires per race weekend

  • Proper SCCA Stamped Restrictor Plate (SM only, 38mm for cars 99-00 / 40mm for cars 01-05)

  • OEM Intake and Exhaust Manifolds


  • SCCA Legal Springs and Dampers must be used

Tortoise & Hare Time Trials (T&H) Rules

All member cars are welcome!  

  • Street cars are eligible

  • No race suits or HANS device required

  • Tire choice is free

  • Start time will be determined by qualifying times while factoring in your sandbagging quotient

  • Cars must meet the muffled day decibel requirement. Specifically, 88 dB or less

  • Stop and go penalty will apply for any car that initiates any contact, tbd by race director

  • No blocking allowed (rule explanation in drivers meeting)

  • Stop and go penalty for ignoring command flags

  • Exclusion for dangerous driving or repeated non-compliance with command flags

  • Cars will be required to pass safety tech prior to racing.

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