A PU tire is a tire made from polyurethane (PU), a type of durable, lightweight synthetic material.

PU tires are widely used for wheelchairs, mobility scooters, carts, trolleys, and other small vehicles. They come in two main types:

Solid PU tires – Made entirely from solid polyurethane.

Pros: Puncture-proof, low maintenance, long-lasting, good load capacity, quiet operation.

Cons: Less cushioning compared to pneumatic (air-filled) tires.

PU-filled tires – A rubber outer tire filled with PU foam.

Pros: Combines the puncture resistance of solid tires with some of the comfort of air-filled tires.

Cons: Slightly heavier than pneumatic tires.

In short: PU tires are designed to be puncture-free, maintenance-free, and durable, making them popular for applications where reliability is more important than maximum shock absorption.

Whether PU (polyurethane) wheels are better than rubber wheels really depends on what you’re using them for.

Here’s a side-by-side breakdown:

Rule of thumb:

Choose PU if you need puncture-proof, long-lasting, low-maintenance wheels for mostly smooth or indoor use.

Choose rubber if you need better cushioning, traction, and outdoor versatility, especially on rough or uneven surfaces.

Yes — polyurethane (PU) tires are generally considered very good for certain uses, but they’re not perfect for every situation.

Why they’re good:

• Puncture-proof – No flats, no air leaks.
• Low maintenance – No pumping, patching, or pressure checks.
• Durable – Resist wear, cuts, and cracking.
• High load capacity – Handle heavy weights without deforming.
• Quiet – Roll smoothly and quietly on hard surfaces.

Where they’re less ideal:

• Less cushioning – They feel harder and transmit more vibration than air-filled tires.
• Less grip on rough/wet terrain – Rubber (especially pneumatic) grips better outdoors.
• Not great for extreme off-road – Designed more for smooth/controlled surfaces.

Best suited for:

• Indoor and smooth-surface use (warehouses, hospitals, malls)
• Mobility scooters and wheelchairs that prioritize reliability over ride softness
• Industrial carts, trolleys, and robots needing heavy-duty, maintenance-free wheels

If comfort is more important than zero-maintenance, pneumatic rubber tires might be a better choice — but if you value durability and no flats, PU tires win.

A PU tyre means a tire made from polyurethane — a strong, durable synthetic material.

Depending on the design, it can be:

• Solid PU tyre – Made entirely from polyurethane. Puncture-proof, long-lasting, and low-maintenance, but less cushioned.
• PU-filled tyre – A rubber outer tire filled with polyurethane foam. This keeps the “no flat” benefit but gives a softer ride than solid PU.

In short:
When you see PU tyre in a product description (like on a wheelchair, mobility scooter, or cart), it means it’s puncture-proof, durable, and maintenance-free, made using polyurethane instead of being an air-filled rubber tire.

A PU wheel is a wheel whose tire is made from polyurethane, a durable synthetic material.

PU wheels are used in everything from shopping carts and office chairs to (electric) wheelchairs, mobility scooters, industrial trolleys, and skates.

Key features of PU wheels:

• Durable – Resist wear, chipping, and cracking.
• Puncture-proof – If solid or foam-filled, there’s no air to leak.
• Smooth & quiet – Roll quietly on hard surfaces.
• High load capacity – Handle heavy weights without deforming.
• Non-marking – Don’t leave black streaks like some rubber wheels.

Common types:

• Solid PU wheel – Entire tread is polyurethane molded onto a rim.
• PU-coated wheel – PU is bonded to a metal or plastic core for extra strength.
• PU-filled tire wheel – Rubber outer tire filled with PU foam for a softer ride.

In short: a PU wheel is strong, low-maintenance, and designed for smooth rolling, especially on indoor or flat surfaces.

Here is the structure of PU solid tire under the scanning Electron Microscope (SEM)