Hoyt 5" tires are ~125mm IIRC. If you really like pneumatics, those would be a good match to keep the original ride height on the M1.
I’m stoked to try the M1 at esk8con. Everything looks beautiful. Nice work Radium team!
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Lotsss more info TBA in a few days. Exciting times!
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Does these wheels fits to normal plastic kegal adapter like meepo hurrican , evolve headen kegal adapter ?
Its a kegel pattern so they should fit other kegel pulleys yes. You’d want 44T + tho, not sure how many options are around like that.
They’re the same as onsra pulleys.
Hey, got a question for ya @Tony_Stark
If i order a crapton of belts (like, 20 or 30) and the new SR125 wheels, will the belts ship now or in july with the wheels?
Also, i noticed that the SR125 wheels are distinctly different from the R-Zero wheels in both appearance and composition, are the R-Zero wheels still happening as they were initially teased, or are the SR125’s replacing them? (I really preferred the looks and form factor of the R-Zero wheels) From what i can tell, the SR125 is a solid rubber wheel with holes through it, whereas the R-Zero wheels were rubber over a foam under layer. I’m assuming the SR125 wheels are a fair chunk heavier than the R-Zero wheels.
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Hey Tommy, if you want the belts to ship first you need to place two seperate orders.
As for the wheels there never really was an R-zero, we were just playing with graphic designs. That was the V2 wheel which was solid rubber weighing 820g per wheel.
The V4 “SR125” is the first Radium wheel you can actually buy. Our form follows function philosophy has resulted in this wheel significantly outperforming the V2 wheels in every way. Despite having a metal core and being 5mm wider and bigger in diameter the weight is under 750g.
The turning radius is better, high speed stability is amazing, comfort and grip also way better. We applied a lot of knowledge learned from testing and designing wheels and the SR125’s totally exceeded our expectations.
That said we still intend to develop a V5 wheel with a foam core, but not until 2025.
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Just sharing my short experience on the radium 125 here. I rode them around the track a few times at esk8con, and they feel fantastic. So smooth with perfect balance.
If I had a board right now that could run 125mm wheels, I’d definitely be buying a set.
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Any vibration at lower speeds? I know MAD wheels were succeptible to it which has me slightly wary
How long will the SR125’s be on preorder sale for?
i didn’t feel any while going around the track. they actually felt really nice, more so than the hoyt 5in tires which i rode right after the mach 1.
also @Tony_Stark yall should definitely release these as a track kit so we can run brp’s on the mach 1
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As far as I felt on them when testing at esk8 con they feel perfectly balanced especially when I was hitting the track hard at esk8 con on the turns especially when they heat up they feel pretty grippy and not like it’s gonna slide out from under you
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Man I till you those brp on the track feel buttterrrr on the Mach 1 and with the rts torque vectoring in it Ouff pretty wild and excited to see what else radium comes up with 
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I didn’t notice any vibrations. It was just silky smooth.
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you get the WHOLE wheel here. Not a HOLEY wheel. smooth. get yerr money’s worth
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Wait, are those billet BRP hubs with pulley bolt pattern built in? What pattern is that, MBS? Also, what bearing size and spacing?
ya they threw it on their cnc machine, the rest would have to be an answered by @Tony_Stark tho. i can tell you for sure that the bearing width is less than the rear brp hubs
pic of the rear brp hubs on the r6 trucks above. they’re probably 22mm od bearings since i think Dylan’s board is on 8mm axles (iirc)
it’s also probably mbs pattern cause that’s what their 20mm wheel pulleys are
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@Tony_Stark Do have any data on longevity of the wheels yet?
I know its quite a variable metric, but would be nice to have a ballpark.
While we’re asking for data. I’m also very curious about consumption data, specifically as compared to large urethane wheels. Extremely high consumption (compared to similarly size urethane) has always been the major drawback of rubber wheels.
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