New 32" tyres - is it what 32" unicycles need to become mainstream?

I ride with 42 psi on my 32”. A compromise between preserving my back and manageable camber sensitivity.
Oh, I forgot, I weigh 75 kg, Nimbus oracle, night rider tire. Don’t know if it is the light or standard tire.
Interestingly Davejh in the following post indicates that lower pressure results in better camber sensitivity. I had the opposite advice and experience. Maybe there is a sweet spot that I did not discover?

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At a smidge over 100kg :sob: i’m riding a 32" Nightrider at 32-35psi. Things start to wallow a bit too much at 30psi and 40 starts to get harsh.

Riding is pretty much entirely tarmac/concrete or hard packed paths. Camber steer wise, it could be better but i’m pretty sure it was worse when i was riding around 40psi.

I’d be a bit leery on hookless rims, I don’t really think there’s a benefit to the consumer as you’re trading tyre security for maybe a marginal cost and weight saving.

On my 36" I find affect of camber much worse at lower tire pressures.

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I was riding my 32 night rider at 35 psi that was my sweet spot. with the Aspen I’m riding at 25 psi .

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It’s interesting to hear that. On the two Kent 32" tires I’ve worn out (they really aren’t very good tires), I tend to ride them at 55 - 60 lbs. They’re soft and squirmy otherwise. (If you search for 32" tires, the Kent tire still shows up – at $40! still a bargain!)
I just ordered one of the maxxis aspen tires, it will be interesting to see the difference.

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Please let us know where you end up on tire pressure, I’m very curious to see if we are on the same page. . I’m riding hard packed limestone assault and some chunky gravel.

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I ride about everything at 32PSI, only recently changed the 24 muni to 27-ish PSI and the 24 freestyle to 36 PSI.
The 32" with 32PSI gives me enough stability as well as momentum to easily do my 10km rides on it.

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I think big wheels are more affected by camber than smaller wheels and it does make sense that with a lower pressure, the effect will be worse. The friction will pull the wheel away from you.
Aside from that I can handle more camber when the high side is to the left of the uni, so when Im riding on the right side of the road, as opposed to the left side. Occasionally there are pedestrians that refuse to walk on the other side of the cambered bike path and it takes a lot of concentration to safely pass them. Still a 32" is then easier than a 36".

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I think big wheels are more affected by camber than smaller wheels an

That comes as a surprise to me. Camber is my enemy number one and I have far less problems with the 27,5x3.25 / 148mm cranks setup than with the 24x2.8 / 148 cranks.

I am even tempted to buy a 29’’ with road tyre, hoping that this would further reduce camber trouble. I guess the only way to find out is to try.

I think it’s just massively dependent on tyre choice and pressure, and the NR tyres are somewhat affected by camber, although the newer lite versions are less bad.
I’ve ridden loads of smaller tyres that are worse than my Aspen 32" or NR Lite 36"

I can’t wrap my head around why larger would fundamentally be different to smaller aside from contact area, which makes sense, but then different pressures presumably affect it significantly more.

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Couldn’t that be down to the different tyres? Chances are that @Setonix has the same model on both his 32" and 36", whereas you obviously have different tyres on your two unis. And that can make a huge difference, in my experience.
Also, if you like to tinker, I encourage you to switch the drive direction of the 24" tyre (if you don’t have a disc brake you can just swap the entire wheel for a short test. Pedals should only unscrew themselves after a certain period of use. Heck, you can just turn the seat 180° to test it out; it’s a uni after all). I had one tyre that was barely rideable when mounted the indicated way, whereas it was quite nice when mounted the other way. Other times the difference wasn’t that big, or things got worse - it’s a bit like roulette.

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I just tried to ride my 32” Nimbus with night rider tire on a path with a lot of camber. When I measured the camber angle it was only 7 degrees - about half of the camber angle in JimTs video.
I tried from 50 psi to 25 psi in 5 psi intervals. I was leaning terribly at every pressure and it did not get less with lower pressure. So no actual sweet spot found. At 40 psi it felt best. Less squirrely and not so rigid as 50 psi.
It could also just be me being more used to the pressure around 40 psi and if I rode for a week at another pressure, that would become my favorite pressure…
I need to get my hands on some alternative 32” tires but I have not found any in Denmark yet.

Both size uni’s have “Nimbus Nightrider” printed on the tires, so yeah, the same tire.
So for me I do feel more comfy with cumber on a smaller wheel, but Im not sure of muni-tire vs freestyle tire. As for low or high psi. I have this road on my 10km trip, which has a bend in it with an extreme camber where the right side of the road is very high and the left very low. I’ve only been able to ride through it with the 24" muni after I had set the PSI to about 27.
With the 24" I feel I am being pulled downward very much and eventually I have to lean and twist so much that I tumble off.

Would there be a difference in riding fast or slow? I tend to slow down, which might make it worse.

How do you measure it? I don’t carry a spirit level around normally (ever).

The 36" could feasibly be a non-lite version and still have Nightrider printed on it (as could the 32" actually IIRC). I certainly felt that the older NR was worse on camber than the lite version owing to it being stiffer and therefore a slightly squarer profile. There’s also an assumption being made that the 32" and 36" tyres are being made the same. They probably are if they’re bot the lite versions being made by innova but there’s no guarantee.
Are you using the same width rims and style of tubes as well as both of these can affect how the tyre inflates and rides.

My gut feeling says that faster is better. You’ll certainly get slightly more of a gyroscopic effect going faster at least but probably not to a level that’s significant.

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I’m also curious about building a nice 32" wheel.

I tried the 32" wheel from Walmart, but the tire was shot and the new 32" tires weren’t compatible. I threw out the tire and rim a few months ago.

The 32" tires and carbon rims look really good. However, double-butted spokes and TPU tubes seem harder to find. I read that Sapim Race spokes go up to 310mm, but finding them… Does anyone already have a 32" wheel with double-butted spokes and a TPU tube?

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Any sign of this yet? I see the website now says late June.

Did these long PSR spokes arrive?

Both uni’s are stock models. I haven’t changed anything to them. Oh I might have replaced the 36" tube, because I got a flat. Just ordered a new tube from municycle.com.

Berd and Alpina Ultralite are so far confirmed to be available in lengths long enough for a 32". Maybe PSR but no sign yet.

Alpina from earlier discussion which look pretty good.: Alpina Ultralite Aero 14G - Black - J-Bend - Spoke - Wheel-Parts.shop

Specs have changed over the years, and there are also variations in different regions at times.

But Foss TPU tube on both, Nimbus Dominator rim on both (42mm wide), and tyres that are assumed to be similar (both the lite version if you bought them relatively recently - I think the 32" lite version will also have the IA coding on the side)?

Sure, it has arrived a few weeks ago! Sorry for the lack of news. Sadly, I haven’t been able to test it yet… When bolting the rotor on the Schlumpf hub, one of the screw heads broke. Since then, I have tried to extract it. As I have failed to do so, I brought the wheel to a workshop where specialist have extracted it this morning! I should be able to finish the work on next week and finally test this wheel :smiling_face_with_three_hearts:

No sign of a TPU tube yet - although Tubolito has announced such tubes for Spring 2026 - so, should be out soon!
Regarding double-butted spokes, is there a reason why you’d like to use such spokes? I believe simple spokes should work out if you don’t plan on landing big jumps.

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