Parts for your 1999 Daihatsu Gran move-Coil springs

1999 Daihatsu Gran Move coil springs — fitment, purpose and service advice

Technical sources confirm coil springs are absolutely relevant to the 1999 Daihatsu Gran Move (also sold as the Pyzar, chassis codes G301/G303). The factory workshop manual (JPNZ reprint of the Daihatsu Service Manual, Suspension section) specifies a front MacPherson strut with a coil spring, and a rear torsion-beam axle with separate coil springs. Autodata’s vehicle specs for the 1999 Gran Move state the same layout, and the Daihatsu Electronic Parts Catalogue lists coil spring part numbers for both front and rear. So yes—this model is fitted with coil springs at both ends.

On the Gran Move, the coil springs carry the vehicle’s weight and set the ride height, while the shocks (struts up front) control the bounce. Together they keep tyres planted, protect the body from bottoming out, and give that tidy little wagon its predictable handling—handy on bumpy Kiwi back roads and Aussie suburbia alike.

They don’t have a set replacement interval, but age, kilometres, corrosion, and heavy loads can fatigue them. Common clues they’re on the way out include a sagging stance on one corner, a harsher or bouncy ride, clunks over speed humps, scraping under the car, or uneven tyre wear. If a spring is cracked, rust-flaked, or has lost height, it’s time to sort it.

When replacing, it’s best practice to do springs in axle pairs to keep balance side to side. Match the correct spec for your VIN (there were different rates depending on engine and market) and check colour codes or load ratings. While you’re in there, inspect related bits: front strut top mounts and bearings, bump stops and dust boots, rubber isolators, and of course the shocks. If the shocks are tired, pairing new springs with fresh dampers will make a huge difference.

A couple of workshop tips that save dramas:

• Use a proper spring compressor on the front struts—these springs are under serious tension.
• Tighten suspension arm bushes at normal ride height to avoid preloading and premature bush wear.
• Get a wheel alignment after front spring or strut work, ride height changes affect camber and toe.
• For WOF/roadworthy peace of mind, replace any cracked, sagged, or mismatched springs immediately.

If the Gran Move regularly carts tools, bikes, or does the school run with a full load, consider heavy‑duty springs matched to quality dampers. Done right, the little Daihatsu will sit level, ride comfortably, and steer true for many more kilometres.

Does the 1999 Gran Move use leaf springs at the rear?

No. It runs a torsion‑beam rear axle with separate coil springs. That setup offers compact packaging, a comfortable ride, and predictable handling—ideal for a small wagon.

How can someone tell if their Gran Move’s coil springs need replacing?

Look for a low ride height on one corner, visible cracks or heavy rust on the coils, a thump over bumps, or frequent bottoming out with passengers or gear. Uneven tyre wear and a bouncy ride after speed humps are other giveaways.

Should shocks be replaced at the same time as the coil springs?

Often, yes. If the shocks are weeping, have lost damping, or the car still bounces after pushing down on a corner, pair new springs with fresh dampers. It restores control and protects the new springs from over‑working.