Supplementary Bag for Wheel Rims, Tires and Wheels: What's Inside

Quick answer

Buy a supplementary bag when your model is already built and only the running gear is missing or worn. Skip it if you need a complete new vehicle, because a bag supplies parts, not a finished model. Check the hole count and the hole spacing on your existing parts first, then order only the bag that matches.

A supplementary bag for wheel rims, tires and wheels solves one specific problem: your construction is finished except for the parts that roll. That is a different job from buying a new building set, and it is usually much cheaper.

The catch is that add-on bags are not interchangeable across every eitech model. Hole count, hole spacing and axle diameter decide whether the parts bolt on without drilling or bending. This guide walks through what to check before you order, and where a small add-on part is the smarter buy than a full kit.

What a wheel and tire supplementary bag actually contains

Supplementary bags are part assortments, not kits. A bag typically holds the rolling components for one vehicle type, so you get the rims, tires and connector parts needed to complete a chassis you have already built. Nothing in the bag is pre-assembled, and no instructions for a full model are included.

That matters for expectations. If your child has built the frame and wants it to move, a bag finishes the job. If you are starting from zero, a bag alone will not produce a vehicle, because the body, axles and structural plates come from the main set.

• Count the wheels your model needs before ordering, including any spare mounted on the rear.
• Keep the original instructions: they show the correct wheel position even when the bag has no manual.

How to check fit before you buy

Start with the hole pattern on the parts you already own. eitech components are sold with defined hole counts and formats, and a wheel carrier only lines up if its mounting holes match the spacing on your chassis plate. Measure the distance between two adjacent holes, not the total length of the part.

Next, check the axle diameter. A rim that is too loose will wobble; one that is too tight will not turn. Because the catalog does not list a universal axle size for every accessory, compare the axle you already use against the rim you plan to order, or ask before purchase if you are unsure.

• Photograph the mounting point on your model and compare it side by side with the product image.
• When a specification is not published, treat that as a decision limit and confirm with the seller rather than guessing.

Small add-on parts that finish a build

Not every finishing job needs a full wheel bag. Sometimes one shaped part is enough to mount a decorative element or close a gap. The Car roof Ferris wheel, yellow is a Manufaktur-line model in yellow, and at USD 0.40 it is the kind of low-cost add-on that changes how a finished vehicle looks without changing how it drives.

For structural work, the Curved flat bar Ø 400 mm 30° is a single curved flat bar in the Manufaktur range. It is useful when a straight bar cannot follow the line you need, for example around a wheel arch or a rounded body panel. At USD 0.27 it is an inexpensive way to test a shape before committing to a larger order.

• Buy one curved bar first and test the fit on the model before ordering several.
• Decorative parts and structural parts solve different problems; do not substitute one for the other.

When a bag is better value than a new set

The economics are simple. If you already own the chassis, plates and screws, a supplementary bag costs a fraction of a new building set and keeps a model in service instead of pushing it to the back of the shelf. That is especially true for models that are otherwise complete.

The trade-off is scope. A bag gives you parts, not a project. If your child wants the experience of building something new from the first screw, a bag will feel like a repair rather than a gift. Match the purchase to the intent, not just the price.

• Choose a bag to repair or upgrade an existing model.
• Choose a full set when the goal is the building process itself.

Buying a supplementary bag as a gift

Bags work well as small gifts when you know the recipient's model. A bag of rods and angle bars extends what a child can build with parts they already have, and the Supplementary bag 11-25 holes, angle contains 14 flat rods and 8 angle bars in the 11-25 hole range, which covers a wide spread of bracing and frame jobs.

If you do not know which model they own, a generic structural bag is the safer choice than a wheel-specific bag, because rods and angle bars are used across many builds. Wheel parts are only useful if the hole pattern matches.

• Ask which eitech model they own before buying anything wheel-specific.
• A structural bag is the safer gift when the model is unknown.

Decision rules for buying a wheel or tire bag

• Match the hole pattern first: Compare the hole spacing on your chassis plate with the mounting holes on the wheel part. If they do not line up, the bag will not fit without extra parts. No match, no purchase.
• Check the axle diameter: A rim that is too loose wobbles and one that is too tight will not spin. If the diameter is not published, confirm it with the seller before ordering. Unpublished specification is a reason to ask, not to guess.
• Decide repair or new build: A bag finishes or repairs an existing model. A full set provides the building experience. Buying the wrong one leads to disappointment even when the parts are good. Buy the bag for the model you already own.
• Start with one part for shape tests: For curved or decorative pieces, order a single unit at the low catalog price and test it on the model before buying several. Cheap parts make cheap experiments.

Product facts worth knowing

• Supplementary bag 11-25 holes, angle: Accessory set of 14 flat rods and 8 angle bars with 11-25 holes, sold as an extension or addition to your own constructions, at USD 7.50. The 11-25 hole range covers long bracing and frame work, so this bag is the flexible choice when you are not sure which specific part a model needs.
• Car roof Ferris wheel, yellow: A yellow Manufaktur-line eitech model, SKU 01848 GELB, priced at USD 0.40, described as a Ferris wheel design intended to be mounted on a car roof. A low-cost decorative add-on that changes the look of a finished vehicle without affecting how it rolls.
• Curved flat bar Ø 400 mm 30°: A curved flat bar from the eitech range, listed under the Manufaktur tag, SKU 01842, with a 400 mm diameter and 30° angle as stated in the product name, priced at USD 0.27. Useful for rounded shapes such as wheel arches where a straight bar cannot follow the line; buy one to test the fit before ordering more.

Is a wheel and tire bag the right buy for you?

Best for

• Builders who already own an eitech model and only need the rolling parts to finish or repair it
• Parents replacing worn or missing wheels on a model that is otherwise complete
• Gift buyers who know the recipient's exact model and want a low-cost add-on

Not for

• Anyone starting from scratch who needs a full building set with instructions and structural parts
• Buyers who cannot confirm the hole pattern or axle size of their model
• Shoppers looking for a pre-assembled or ready-to-run toy vehicle

A supplementary bag is a repair and upgrade tool, not a starter kit. Check the hole pattern and axle fit on your existing model, buy the smallest part that solves the problem, and you will spend a few dollars instead of replacing a set that still works.