Wheel Hardness: The Setup Detail Older Skaters Get Wrong

When I bought my first board back at 46, I spent a week agonizing over deck width and maybe ninety seconds thinking about wheels. I grabbed whatever came stock on the complete I liked the graphic on. Six weeks later my knees were barking after every session, and it took a friend at the shop pointing at my wheels — hard and small, clearly built for smooth street skating rather than the rough neighborhood pavement I was actually rolling on most days — to tell me why.

Deck width gets all the attention in gear conversations because it’s the thing you see and feel most obviously. Wheel hardness is the variable that actually decides how a session feels in your joints afterward, and it’s the one most returning older skaters get wrong first, because nobody stocking a shop’s front wall is optimizing for a 47-year-old’s ankles.

The durometer scale, briefly

Skateboard wheel hardness is measured on the “A” durometer scale, printed right on the wheel — something like 99a or 83a. Higher number, harder wheel. One wrinkle: a few brands, Bones most visibly, print a “B” scale instead, which reads about 20 points lower for the same hardness — an 83b is roughly a 103a, not a soft wheel. Otherwise that’s the whole system, and the range that matters for returning older skaters is roughly 78a to 101a:

• 99a–101a (hard): Fast, slides easily, transmits almost every crack and pebble straight into your legs. This is what most street-oriented complete boards ship with, because it’s what teenagers doing technical tricks on smooth ground want.
• 90a–97a (medium-hard): A middle ground some park skaters use — faster than soft wheels, more forgiving than full-hard, but still transmits real vibration on anything but clean concrete.
• 78a–87a (soft): Absorbs vibration instead of transmitting it, grips rougher surfaces better, and rolls over small debris that would stop a hard wheel cold. This is the range most returning older skaters are happiest on, and it’s what shows up as the default recommendation across nearly every gear guide on this site.

The tradeoff is real, not imaginary: softer wheels are typically a little slower at top speed and wear down faster than hard wheels, especially with aggressive slides. For almost everyone reading this, that tradeoff is worth making.

Why this matters more than deck shape

A deck that’s slightly too narrow or too wide is annoying. Wheels that are too hard for the surface you actually skate on are a repeated, cumulative jolt through your ankles, knees, and hips, session after session, whether or not you notice it in the moment. It’s the same logic behind why softer wheels do more for aching joints than almost any other gear change — you can feel the difference between 99a and 85a on the same rough patch of asphalt on your very first push.

That’s also why wheel hardness deserves its own decision, separate from whatever deck you end up on. You can put soft wheels on a narrow street deck or hard wheels on a wide cruiser deck — they’re independent choices, and getting the wheel half right while nailing the deck half doesn’t save your knees.

Matching hardness to where you actually skate

The honest answer depends less on your age and more on your terrain, though the two often point the same direction for returning older skaters:

Rough asphalt streets, cracked plazas, imperfect neighborhood pavement: Go as soft as you reasonably can — 78a to 82a. This is the surface where hardness makes the most dramatic difference, because every seam and pebble is a small impact your body absorbs instead of the wheel.

Well-maintained skatepark concrete: You have more room to go harder — 83a to 90a still rolls comfortably and gives you a bit more speed and slide control on smooth, purpose-built terrain, without dropping to street-hard levels.

A mix of both, which is most people’s reality: Split the difference around 82a–85a. It’s the setup that costs you the least regardless of which surface you end up on that day, and it’s the range I’d point any returning older skater toward if they only want to own one set of wheels.

Size matters too, but less than hardness

Diameter (measured in millimeters, usually 52mm–60mm+ for skateboard wheels) affects how much momentum you carry and how well you roll over cracks, with bigger generally meaning smoother and faster. It’s a real factor, but it’s secondary to hardness for comfort — a big hard wheel still hammers your joints on rough ground, while a smaller soft wheel still absorbs plenty. If you’re prioritizing one variable to get right, make it durometer first.

One caveat before you size up: a 60mm+ wheel needs clearance to match on a standard street deck with low trucks, or it can hit the underside of the deck when you turn or lean — catching hard enough to stop the board and throw you. If you’re going bigger on an existing setup rather than a purpose-built cruiser or longboard, pair it with higher trucks or riser pads and check for wheel bite by leaning the board hard on all sides before you ride it.

When to replace what you have

Wheels wear unevenly and lose their round shape (“coning”) well before they’re visibly bald, and a coned wheel changes how your board turns without you necessarily noticing why. If your setup has felt off lately — grabbier turns on one side, more chatter than usual — check the wheels before you blame your technique. And if you’re still riding whatever came stock on a complete built for street skating, that’s worth checking today, not after your next sore-knee session.

One caveat, because it matters: softer wheels take the vibration out of a session, but they don’t fix a joint that’s already hurting. If your knees are still sore after the swap, or the pain is new, sharp, or one-sided, that’s a body question rather than a gear one — our guide to skating with joint pain covers when to rest and when to get it looked at.

If you’re building or upgrading a setup from scratch, our board size guide covers deck and truck choices alongside wheels, and concrete vs. wood vs. asphalt goes deeper on how surface interacts with all of it. But if you only change one thing on an existing board this week, make it the wheels. It’s the cheapest gear upgrade on a skateboard, and for most returning older skaters, it’s the one that actually changes how your body feels the next morning.