Most new energy vehicles no longer ship with a spare tire. Carmakers drop it to save weight and space — but roads are rarely that forgiving. A flat tire in a remote area means waiting for a tow truck, not a quick fix. If you want the safety of carrying a spare, the question becomes: where do you put it?
For the BYD Atto 2 (also sold as the Yuan Up), the answer is the space under the rear trunk floor. That well is sized for the spare tire but normally sits unused — which is exactly where the Maremlyn spare tire storage box earns its place. It tucks the spare out of sight, turns the area into organized storage, and keeps the cargo space you actually use. No cutting, no drilling, no special tools.
This guide walks through the installation shown in our installation showcase video, step by step.
What you get
- Storage box molded to the exact contours of the Atto 2 / Yuan Up rear spare tire well
- Fits the spare tire securely while leaving organized compartments for tools and cargo
- OEM-matched structure for stable fixation, waterproof and dustproof
Installation steps
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Clear the rear cargo area. Fold up the trunk floor and remove anything sitting in the spare tire well.
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Place the spare tire. Lower the spare tire into the well first, making sure it sits flat and centered.
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Align the storage box. Position the box over the tire, lining it up with the OEM mounting points. The box is built from vehicle scan data, so alignment should be effortless.
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Press down to seat. Press the box evenly around the edges until it clicks into place. The structure integrates with the vehicle body, sitting flush with no gaps and no rattling.
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Check fixation, then restore the trunk floor. Push on the box from different angles — a properly seated box holds firm. Lay the trunk floor back down and the spare is stored out of sight.
Why it matters
A spare tire only helps if it is actually in the car — and it only makes sense if it doesn't eat your cargo space. The Maremlyn storage box solves both: the spare stays safely in the factory well, the box above it keeps tools and cargo organized, and the trunk floor closes flat. You carry peace of mind without giving up a centimeter of usable space.
Related accessories
Looking for more rear-area protection? Explore the full BYD Atto 2 accessories and BYD Yuan Up accessories ranges, or check the spare tire storage box product page for full specs.
Need the storage box in bulk?
Maremlyn supplies global distributors, EV accessory retailers and modification shops with wholesale pricing and private label options. Contact us for the product catalog, compatibility list and price sheet.