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