Wheels are the single biggest thing you can change to make your skates feel different. The same pair of skates can feel slow and sticky or fast and slippery depending on the wheels. Here’s how to decode the numbers.
Durometer: wheel hardness
Wheel hardness is measured on the durometer “A” scale. You’ll see it printed on the wheel as a number followed by “A,” like 78A or 95A.
- Lower number = softer wheel. More grip, smoother ride, absorbs bumps. Wears faster and feels slower on smooth floors.
- Higher number = harder wheel. Less grip, faster on smooth surfaces, slides more easily. Rougher ride outdoors.
General guide
| Hardness | Best for |
|---|---|
| 78A–85A | Outdoor skating: sidewalks, paths, boardwalks, rough surfaces |
| 85A–90A | Hybrid: smooth outdoor surfaces and grippy indoor floors |
| 90A–95A | Indoor rink skating, derby on sport court |
| 95A–103A+ | Slick rink floors, dance and jam skating, slides and spins |
Different rink floors have different grip, so local skaters often have strong opinions about the “right” wheel for their home rink. Ask around.
Wheel size (diameter)
Wheel size is measured in millimeters.
Quad wheels usually run about 55mm–65mm. Smaller wheels accelerate faster and feel more agile — good for dance, derby and tricks. Larger quad wheels roll over cracks better and hold speed for outdoor cruising.
Inline wheels range from about 55mm (aggressive) to 110mm or more (speed and marathon). Many recreational inlines use 76mm–84mm wheels; fitness and urban skaters often go 90mm–110mm for speed and smoothness over rough ground.
Width and profile
For quads, wheel width affects stability and maneuverability:
- Wide wheels (about 38mm+) feel stable and grippy. Good for beginners and outdoor skating.
- Narrow wheels (about 30–35mm) feel quick and agile. Popular with dance and jam skaters and some derby skaters.
Inline wheels have a profile — rounder profiles turn more easily, flatter profiles grip more and last longer.
Hub material
The hub is the plastic or aluminum core that holds the bearings. Nylon hubs are light and affordable. Aluminum hubs are stiffer and transfer more power, popular in derby and speed skating.
Indoor vs outdoor: the quick answer
- Skating mostly at the rink? Go harder — about 88A to 95A or higher, depending on the floor.
- Skating outside? Go softer and bigger — about 78A to 85A, and larger diameter.
- Both? Many skaters keep two sets of wheels and swap. It takes about 15 minutes with a skate tool.
When to replace wheels
Replace wheels when they’re coned (worn at an angle), chunked, flat-spotted or noticeably smaller. On inlines, rotate wheels regularly so they wear evenly and last longer.
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