What Is 1999 Lime Rock Grand Prix

Overview

The 1999 Lime Rock Grand Prix was a pivotal event in the American Le Mans Series (ALMS), showcasing top-tier sports car racing during the series' second season. Held on July 18, 1999, at Lime Rock Park in Lakeville, Connecticut, the race spanned two hours and attracted a diverse field of prototypes and grand tourers across multiple classes.

As the fifth round of the 1999 ALMS season, the event highlighted Porsche's dominance in endurance racing, with factory-backed entries from Porsche Motorsports leading the charge. The tight, 1.5-mile road course tested handling and driver precision, making it a fan favorite for close racing and technical challenges.

• Event Date: The race occurred on July 18, 1999, marking the mid-season point of the ALMS calendar.
• Track Location: Lime Rock Park is situated in Lakeville, Connecticut, and has hosted sports car races since 1958.
• Race Duration: The event was a two-hour timed race, consistent with ALMS endurance formats of the era.
• Winning Team: The #15 Porsche 911 LMR, run by Porsche Motorsports, claimed overall victory.
• Winning Drivers:Ralf Kelleners and Emmanuel Collard drove the full race distance, completing 133 laps to secure first place.

How It Works

The American Le Mans Series followed a multi-class endurance format, allowing different types of sports cars to compete simultaneously under a unified set of rules. Each class had its own championship, but all cars raced on track together, creating strategic overtaking and fuel management challenges.

• LMP Class:LMP (Le Mans Prototype) cars were the fastest, with open-cockpit designs and advanced aerodynamics. The 911 LMR used a 3.5L V8 engine and hybrid chassis.
• GT1 Class:GT1 featured modified production-based supercars like the Chrysler Viper GTS-R and Corvette C5-R, with engines exceeding 500 horsepower.
• GT2 Class:GT2 included slightly less powerful grand tourers such as the Porsche 911 GT2, aimed at privateer teams and closer to street versions.
• Race Strategy: Teams used pit stops for fuel, tires, and driver changes, with timing critical due to the two-hour limit.
• Scoring System: Points were awarded based on finishing position within class, contributing to season-long ALMS championships.
• Track Layout: Lime Rock’s 1.5-mile, seven-turn circuit emphasized braking zones and cornering precision over top speed.

Comparison at a Glance

Below is a comparison of key entries and results from the 1999 Lime Rock Grand Prix across different classes:

The table illustrates Porsche’s class dominance, with the factory LMP entries finishing first and second overall. The close lap counts reflect Lime Rock’s short length, where endurance required consistency over raw speed. GT1 and GT2 entries lagged slightly due to performance balancing, but still delivered competitive racing.

Why It Matters

The 1999 Lime Rock Grand Prix was significant for cementing Porsche’s engineering prowess during a transitional era in endurance racing. It also highlighted the growing popularity of the ALMS in the U.S., bridging European Le Mans traditions with American motorsport culture.

• Manufacturer Showcase: Porsche’s 1-2 finish demonstrated the 911 LMR’s reliability and speed, boosting brand prestige.
• Endurance Innovation: The race tested hybrid chassis designs and fuel-efficient V8 engines under sustained load.
• Driver Development: Young talents like Emmanuel Collard gained exposure on the international stage.
• Series Growth: ALMS attendance and TV ratings grew, partly due to events like Lime Rock’s summer weekend format.
• Track Legacy: Lime Rock continued to host ALMS through 2003, maintaining its status as a northeast U.S. racing staple.
• Historical Record: The event is documented in ALMS archives and IMSA historical databases as a benchmark for 1990s sports car racing.

Overall, the 1999 Lime Rock Grand Prix remains a notable chapter in American sports car history, reflecting technological evolution, competitive spirit, and the global reach of endurance racing.