Parts for your 2020 Holden Astra-Brake shoes

2020 Holden Astra brake shoes — are they used, and what to know

Checking trusted technical sources shows that brake shoes are only used on some 2020 Holden Astra variants. The BK-series Astra R (1.4T) is fitted with rear drum brakes that use brake shoes, while the Astra RS and RS-V (1.6T) run rear disc brakes and therefore don’t use brake shoes. This is documented across Holden Australia specification sheets and owner’s manuals for MY19–MY20, RedBook AU model data listing rear “Drum” on Astra R and rear “Disc” on RS/RS-V, plus Bendix and Bosch brake catalogues and the GM/ACDelco electronic parts catalogue that list rear shoe sets for BK Astra with drum rears.

If their 2020 Astra has rear discs, brake shoes aren’t relevant to that vehicle. If it’s the Astra R with rear drums, brake shoes are a normal wear item and part of routine servicing.

For Astra R owners, the rear brake shoes do the heavy lifting inside the drum: they press outward against the drum surface to slow the car and also provide most of the holding force for the park brake. They’re durable, low-maintenance, and well suited to everyday commuting. Over time, the friction lining wears, hardware loses tension, and dust builds up, which can reduce braking bite or cause noise.

As part of regular servicing, it’s smart to have the rear drums removed and the shoes inspected about every 20,000–30,000 km or at every second service, sooner if there’s squeal, reduced park-brake hold, or a longer pedal. A technician will check shoe lining thickness (replace near 2 mm remaining), look for glazing, heat spots, or contamination from a weeping wheel cylinder, clean out brake dust, lubricate contact points sparingly, and inspect/replace springs and adjusters if tired. Drums should be measured for diameter and condition, machining or replacement may be recommended if out of spec or scored. Brake fluid should be replaced every two years to keep the hydraulics healthy.

When replacing, it’s best practice to do shoes as an axle set, bed them in gently over the first few hundred kilometres, and recheck park-brake adjustment. Keeping the rear drums clean and correctly adjusted helps maintain consistent pedal feel, balanced braking, and strong park-brake performance. If their Astra runs rear discs (RS/RS-V), they won’t have brake shoes, rear pads and rotors are the service items instead.

• Signs the Astra R’s shoes may need attention: reduced park-brake hold, scraping or squealing from the rear, judder under light braking, or a longer pedal travel.

Technical sources referenced: Holden Astra BK Owner’s Manual (MY19–MY20), Holden Australia specification/brochure sheets, RedBook AU specification data, Bendix and Bosch AU/NZ brake catalogues, GM/ACDelco Electronic Parts Catalogue for BK Astra.

Popular questions

How can someone tell if their 2020 Astra has brake shoes?
A quick look through the rear wheel spokes usually gives it away. If there’s a visible shiny rotor with a caliper, it’s a disc-brake rear (no shoes). If the hub looks like a closed drum with no exposed rotor, it’s a drum rear with brake shoes. The VIN plate/spec sheet or the owner’s manual will also list rear brake type, Astra R typically has drums, RS/RS-V have rear discs.

How long do Astra R brake shoes last?
It varies with driving style and terrain, but many Astra R owners see 60,000–100,000 km from a set of rear shoes. Frequent stop-start driving, towing, or heavy park-brake use can shorten that. Have them inspected every 20,000–30,000 km, replace when near 2 mm lining, contaminated, cracked, or if the hardware is tired.

Do the drums need replacing when doing shoes?
Not always. If drum diameter and surface condition are within spec, they can often be reused after a light machine. Replace drums if they’re beyond maximum diameter, badly scored, heat-checked, or out-of-round. It’s also wise to refresh springs/adjusters and check wheel cylinders at the same time for a tidy, long-lasting result.