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