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GeoBrakes stocks OEM-grade brake drums confirmed to fit the Ram Promaster City, the cast-iron components that form the friction surface for the Promaster City drum brake shoes. Available in standard and corrosion-coated configurations for your Promaster City, every drum is manufactured to the correct inner diameter, wall thickness, and surface finish for the Ram Promaster City
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The brake drum on the Ram Promaster City is the rotating cast-iron bowl that the Promaster City drum brake shoes press against to slow your vehicle. Mounted to the rear axle hub of your Ram Promaster City, it spins with the wheel and provides the friction surface that the shoes contact under braking. Unlike brake rotors, which can be visually inspected from outside the wheel on many Promaster City vehicles, Ram Promaster City brake drums fully enclose the shoe assembly, which means wear and damage often goes unnoticed until braking performance on the Ram Promaster City is noticeably affected.
Standard OEM-Grade Drums for the Ram Promaster City
Standard OEM-grade cast-iron drums for the Ram Promaster City are manufactured to the original equipment diameter, wall thickness, and surface finish specification for your Promaster City. They are the direct replacement for the factory Promaster City drum with no modification required.
Coated Brake Drums for the Ram Promaster City
Coated Ram Promaster City brake drums feature a corrosion-resistant coating applied to the external drum surfaces of your Promaster City, the hat section, outer wall, and wheel mounting face. Surface rust is a common issue on Ram Promaster City drum brake vehicles in US, particularly during periods of non-use in winter when moisture and salt collect inside the Promaster City wheel well. A coated drum on your Ram Promaster City resists surface rust that can transfer to the wheel mounting face, making future drum removal significantly easier at the next Promaster City brake service.
Ram Promaster City brake drum replacement requires matching the correct inner diameter, wall thickness, bolt circle, hub bore, and drum offset for your Promaster City. Errors in any of these dimensions produce incorrect shoe-to-drum clearance, uneven wear, and braking problems on the Ram Promaster City. Our vehicle selector eliminates those risks by confirming the correct drum for the Ram Promaster City exact year, make, model, and axle. Coated Promaster City drum options are available for vehicles with heavy salt exposure.
How long do brake drums last on a Ram Promaster City?
Ram Promaster City brake drums typically last 150,000 to 200,000 kilometres with periodic resurfacing, significantly longer than disc brake rotors on the Promaster City. Each resurfacing removes material from the Promaster City drum and reduces wall thickness. Once the Ram Promaster City drum reaches its maximum allowable inner diameter, it must be replaced rather than turned again.
Should I replace brake drums on my Ram Promaster City in pairs?
Yes. Replace both Ram Promaster City drums on the same axle to maintain balanced braking. Drums of different inner diameters on the Promaster City create uneven friction forces, causing the Ram Promaster City to pull to the fresher-drum side during braking.
Should I replace drums and shoes at the same time on my Ram Promaster City?
Yes, it is strongly recommended for the Ram Promaster City. New shoes on a scored or out-of-round Promaster City drum wear unevenly from day one. New Ram Promaster City drums with old shoes that have worn to match the old drum surface will contact the new bore incorrectly. Replacing both together on the Promaster City ensures proper break-in and maximum service life from both components.