2005 Lexus GS III Dimensions, Size & Specs

The curb weight of the Lexus GS III ranges between 1620 kg and 1875 kg (approximately 3571 to 4132 lbs), depending on the trim and equipment installed. The maximum allowed weight, which includes passengers and cargo, spans from 2060 kg to 2355 kg (roughly 4540 to 5192 lbs). This weight variation reflects differences in engine options, drivetrain configurations, and available features, influencing fuel consumption and driving dynamics.

The Lexus GS III offers a flexible luggage capacity ranging from 229 liters up to 430 liters (about 8.1 to 15.2 cubic feet), depending on whether the rear seats are upright or folded down. This capacity allows for moderate cargo space typical for midsize sedans, making it practical for everyday use and longer trips where extra storage is needed.

The Lexus GS III has a ride height or ground clearance ranging between 130 mm and 140 mm (approximately 5.1 to 5.5 inches). This ground clearance provides a good balance between sporty handling and practical usability, allowing the vehicle to perform well on smooth roads and minor obstacles but may be less suited for rough off-road conditions.

The Lexus GS III typically comes with rims sized between 7J x 17 inches and 8J x 18 inches. Tire sizes vary accordingly, with common options including 225/50 R17 and 245/40 R18. These sizes contribute to both ride comfort and road grip, supporting the GS III’s luxury and performance characteristics.

Yes, the Lexus GS III with its length of 4825 mm (189.8 inches), width of 1820 mm (71.7 inches), and height up to 1435 mm (56.5 inches) generally fits comfortably within a standard residential garage. Standard garages typically have widths around 2400 mm (94.5 inches) and lengths over 4800 mm (189 inches), so parking and maneuvering the GS III indoors are manageable, although attention should be given to mirror folding and door opening space in tighter garages.

Compared to the predecessor GS II generation, the GS III was designed to be slightly larger and heavier. The length increased to 4825 mm from prior dimensions around 4750 mm, offering more interior space and a more commanding road presence. Weight also rose due to added safety and luxury features, with curb weight increasing toward the upper 1800 kg range compared to lighter earlier models. These changes deliver improved ride comfort and occupant protection, but can result in a slightly less agile feel.

The Lexus GS III competes closely with contemporaries such as the BMW 5 Series (E60) and the Mercedes-Benz E-Class (W211). Dimensionally, the GS III’s length of 4825 mm and width of 1820 mm place it slightly below or in line with these rivals, which often exceed 4850 mm in length. In terms of weight, the GS III tends to be competitive, balancing luxury features and performance with a curb weight similar to that of the BMW and Mercedes sedans. The Lexus emphasizes reliability and comfortable ride quality, while the BMW focuses more on dynamic driving and the Mercedes on luxury and refinement. Overall, the GS III holds its own within the midsize luxury sedan category both in size and premium features.

The Lexus GS III, produced from 2005 to 2007, is characterized by a refined, yet sporty design language with smooth, aerodynamic lines and a bold front grille. The interior combines high-quality materials, advanced technology for its time, and spacious seating, emphasizing comfort and luxury. This generation introduced enhanced safety features and improved handling dynamics through better suspension tuning. Powertrain options typically include V6 engines with the hallmark Lexus smoothness and reliability. Overall, the GS III aims to deliver a balanced blend of performance, luxury, and everyday usability.

Upgrading tires and rims on the Lexus GS III should consider the original specifications to maintain optimal driving dynamics and safety. The stock sizes, such as 225/50 R17 and 245/40 R18 tires, offer a balance between ride comfort, road grip, and performance. Choosing larger rims or lower-profile tires may enhance sporty handling but can compromise ride quality and increase road noise. It's also important to ensure the rims’ width and diameter match the GS III’s suspension and brake components to avoid issues with fitment, speedometer accuracy, or tire wear. Maintaining recommended tire pressures and using quality tires will ensure the Lexus GS III performs as intended.