Vehicle model
Alfa Romeo 15 HP
The Alfa Romeo 15 HP represents one of the very first chapters in Italian automotive history and marks the commercial beginnings of the brand that would become a legend. Launched in 1910 under the name A.L.F.A. (Anonima Lombarda Fabbrica Automobili), the Milanese company unveiled its first production model, the 24 HP, quickly followed by the 15 HP in 1911. The latter was designed to meet demand for a more compact and accessible vehicle while maintaining the build quality and sporting performance that would define the brand's DNA. The 15 HP was developed under the direction of engineer Giuseppe Merosi, a central figure in the brand's early years. Merosi, who had previously worked at Bianchi and Fiat, brought his technical expertise and vision of an elegant yet powerful automobile. The 15 HP model positioned itself as a touring car intended for affluent clientele seeking both comfort and dynamism. In the context of the nascent Italian automotive industry, this model allowed A.L.F.A. to differentiate itself from established manufacturers like Fiat, Lancia, and Itala. The design of the 15 HP reflects the automotive aesthetics of the Belle Époque with its high body, imposing spoked wheels, and elongated hood housing the engine. Offered primarily in torpedo and sedan configurations, the car displayed elegant lines typical of the era, with pronounced fenders and a distinctive grille that foreshadowed the Alfa Romeo style. Bodies were often crafted by specialized Milanese workshops, offering a degree of customization to wealthy buyers. Mechanically, the 15 HP is equipped with a 2.4-liter inline four-cylinder engine developing approximately 22 actual horsepower, a figure that exceeds the fiscal designation of 15 HP. This powerplant allows the car to reach respectable speeds for the era, around 90 km/h, making it a genuinely sporty automobile. The four-speed manual gearbox and propeller shaft transmission represent modern technical solutions for the time. Production of the 15 HP continued until 1914, when the outbreak of World War I disrupted the European automotive industry. During these few years, approximately 150 examples were hand-assembled at the Portello factory in Milan, reflecting the artisanal nature of automotive production in this era. Each vehicle represents hours of meticulous work and craftsmanship that established the foundations of Alfa Romeo excellence. The legacy of the 15 HP is considerable despite its limited production. It established the principles that would guide Alfa Romeo for decades: the balance between elegance and performance, technical innovation, and attention to detail. These early cars demonstrated that the young Milanese brand already possessed the qualities that would earn it worldwide renown. After the war, the company would be reborn under the name Alfa Romeo and build upon the experience gained with these pioneering models to construct its sporting legend.
History
History of the Alfa Romeo 15 HP
The Alfa Romeo 15 HP represents one of the very first chapters in Italian automotive history and marks the commercial beginnings of the brand that would become a legend. Launched in 1910 under the name A.L.F.A. (Anonima Lombarda Fabbrica Automobili), the Milanese company unveiled its first production model, the 24 HP, quickly followed by the 15 HP in 1911. The latter was designed to meet demand for a more compact and accessible vehicle while maintaining the build quality and sporting performance that would define the brand's DNA. The 15 HP was developed under the direction of engineer Giuseppe Merosi, a central figure in the brand's early years. Merosi, who had previously worked at Bianchi and Fiat, brought his technical expertise and vision of an elegant yet powerful automobile. The 15 HP model positioned itself as a touring car intended for affluent clientele seeking both comfort and dynamism. In the context of the nascent Italian automotive industry, this model allowed A.L.F.A. to differentiate itself from established manufacturers like Fiat, Lancia, and Itala. The design of the 15 HP reflects the automotive aesthetics of the Belle Époque with its high body, imposing spoked wheels, and elongated hood housing the engine. Offered primarily in torpedo and sedan configurations, the car displayed elegant lines typical of the era, with pronounced fenders and a distinctive grille that foreshadowed the Alfa Romeo style. Bodies were often crafted by specialized Milanese workshops, offering a degree of customization to wealthy buyers. Mechanically, the 15 HP is equipped with a 2.4-liter inline four-cylinder engine developing approximately 22 actual horsepower, a figure that exceeds the fiscal designation of 15 HP. This powerplant allows the car to reach respectable speeds for the era, around 90 km/h, making it a genuinely sporty automobile. The four-speed manual gearbox and propeller shaft transmission represent modern technical solutions for the time. Production of the 15 HP continued until 1914, when the outbreak of World War I disrupted the European automotive industry. During these few years, approximately 150 examples were hand-assembled at the Portello factory in Milan, reflecting the artisanal nature of automotive production in this era. Each vehicle represents hours of meticulous work and craftsmanship that established the foundations of Alfa Romeo excellence. The legacy of the 15 HP is considerable despite its limited production. It established the principles that would guide Alfa Romeo for decades: the balance between elegance and performance, technical innovation, and attention to detail. These early cars demonstrated that the young Milanese brand already possessed the qualities that would earn it worldwide renown. After the war, the company would be reborn under the name Alfa Romeo and build upon the experience gained with these pioneering models to construct its sporting legend.
Technology
Technologies, engines and platforms
The Alfa Romeo 15 HP is based on a technical architecture typical of the early 20th century, with a steel ladder chassis featuring longitudinal members and crossmembers ensuring rigidity and durability. The 2413 cc inline four-cylinder side-valve engine develops approximately 22 actual horsepower and features a three-bearing crankshaft. Transmission is via cone clutch and four-speed manual gearbox, with driveshaft to the rigid rear axle. Brakes act only on the rear wheels according to the standard configuration of the era. Suspension combines semi-elliptic springs front and rear, offering a compromise between comfort and road holding. Magneto ignition and fixed-jet carburetor reflect the mechanical standards of 1911.
Tires and wheels
Tire and wheel compatibility
For the Alfa Romeo 15 HP produced between 1911 and 1914, exact tire and wheel dimensions varied depending on configuration and year. It is essential to verify the original specifications of your particular example before any replacement.
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