Carbon Fiber Motorcycle Wheels by BST vs. Stock Metal Rims at Brock’s Performance

[@reubinthornton]

I have about 55,000 miles on a set of BST CF wheels mounted on my BMW K1600GT. Absolutely no issues, Significant performance difference when compared to stock wheels. I tell fellow K1600 owners there are 2 things you can do increase the performance of the big K1600GT; e.g. BST wheels and Brembo Corta Corsa Master Cylinder.

[@mechanickiwi4116]

Should be compared with a modern alloy sportsbike wheel.

[@exothermal.sprocket]

The 1:7 static weight thing Brock was talking about when the video closed, has to do with equivalent weight effects. In other words, 1 pound of mass in a wheel has the equivalent bulk effect of 7 pounds of mass up in the motorcycle (all the stuff that isn't rotating or moving) by way of what it takes to accelerate it, stop it, move it. Reason for this is due to the wheel spinning at speed, the small amounts of wheel mass magnify effects on acceleration, braking, and handling due to gyroscopic and centrifugal forces. The motorcycle is only in linear motion, while the wheels are sending themselves on a much higher velocity journey (in rotation, or displacement in space/time) than the rest of the motorcycle. Obviously for a given speed like 60 mph, a larger diameter wheel is traveling much faster in the rim section than a smaller diameter wheel making the effects worse. Incidentally, the engine and transmission parts have similar effects when running at higher RPM.

[@mauricewhite9149]

Well..I am sold. That demo is legit

[@cycledrag]

Very cool! Did you get a set?

[@uwish351]

Great video. Based on the video, the lighter the wheel the less the gyroscope effect, which is obviously a huge advantage in cornering or changing direction. My concern is that on a big heavy Harley touring bike that gyroscope effect helps to stabilise the bike at high speeds. So having a very light wheel would reduce the gyroscope effect. Does that mean that the bike will be less stable at high speeds?

[@Nick-dz4ml]

Somewhat, yes. It Will be easier to change direction so less stable

[@isumairuchiru]

Since it's carbon. Any maintenance on it. Expose to UV and heat it could deteriorate eventually right?

[@cycledrag]

I'll see if we can get Brock to check in. Please subscribe to this channel and get your motorcycle friends to do the same and I'll keep it coming.

[@jakeshort1401]

@@cycledrag Any update on this

[@rituljoshi7458]

@@cycledrag update?

[@carbonconnection2480]

I know people scream about the price but if they ever tried a set I think they would save up and get some. They will turn it into a new bike 💪

[@cycledrag]

How would you describe the way they feel?

[@Enonymouse_]

Longevity/Durability of these wheels is a big question mark. Can you afford to have these fracture when doing highway or above speeds? The biggest question between myself and my other riding buddies is how long do these last before age causes them to rot or crack.. When you put these on a sport tourer capable of quarter mile times of 10-11 seconds stock, you can't afford to gamble. Metal rim longevity always wins that discussion.

[@adamcuttler9665]

I don't know about longevity but MotoGP uses them so performance-wise I say they're good

[@TRU_Lunchy]

Seen brock mention 500 launches on a drag bike they have. That's some quite a bit of torque.

[@quanwick4516]

GT350R has carbon fiber wheels so I think these can last.

[@judawikana3329]

@@adamcuttler9665 That is far from true. MotoGP uses Magnesium forged wheels. Not Carbon. BSB might be another story.

[@adamcuttler9665]

@@judawikana3329 you are correct

[@mikebush3288]

I've been communicating with Brock's and def getting a set for my '19 H-D EGS.

[@yannpaquet73]

I can't justify spending 4 grand on them though

[@cycledrag]

Please subscribe to this channel and get your motorcycle friends to do the same and I'll keep it coming.

[@05EVORS]

dudes do x2 that for diamond rings and get divorced alll the time lol

[@cycledrag]

@@05EVORS lol. Thank you for the feedback. If you have not already, please subscribe and share this channel with some friends who appreciate fast motorcycles. I'll keep it coming! Thanks!

[@justindilworth8385]

I’m with ya. You could get another bike for 4K🤣🤷‍♂️

[@elduderinoakahisdudeness]

What wheels should we run if we're concerned we may exceed the static load? I was thinking of getting Marchesinis, what is recommended?

[@cycledrag]

Thank you for the question. I would call Brock's Performance directly and mention this Cycledrag video. Sometimes Brock is available, if not somebody else can help you. Let me know how it goes. Thanks a lot for the comment. Please also subscribe and get some motorcycle loving friends to do the same!

[@noahaguiar9549]

Would switching to a wheel that light sacrifice stability at all?

[@gump90210]

Are those yellow decals on the wheels a sticker? Also can they be removed or are they under the clear coat?

[@cycledrag]

They can be removed so you can customize.

[@cycledrag]

Are you going to get a set?

[@ericperkins9198]

This video would have been way cooler without the over the top acting...

[@cycledrag]

ouch. We tried our best to get the point across. Check out some of my other videos. We seriously are not acting, just being us.

[@shaheershukri]

What typer of that wheel...its look really small and i like it

[@steelmilkjug]

Just curious what kind of torque those can handle without cracking.... I guess potholes are way worse than any torque a current bike will put out.... so...

[@WHITEHEADTJ71]

they are used on some of the fastest street harleys so I imagine quite a bit.

[@muhammadsteinberg]

Thanks for that question. I'm wondering same thing. Especially over time with hole shots.

[@orionmobile6545]

They can handle 800hp turbo gsxr

[@chrissmith7669]

What kind of weight are we talking?

[@nikolaiownz]

Yeah tobad Carbon wheels are so insane priced. They are so cool

[@2dmnserious102]

nikolaiownz not too bad actually. You just have to find the right site and discount code.

[@ashyxt]

@@2dmnserious102 introduction please?

[@cycledrag]

@@2dmnserious102 Very true, check out Brock's! Mention Cycledrag.com

[@reasnunown2333]

Just damaged my carbon rim on my s1000rr Any place that could repair them

[@briangc1972]

Non repairable. Have to buy a new rim.

[@jasongato7809]

What model bst is better for drag racing?

[@dikxy6266]

any models for small bike R17 like yzr r125/15 - gsxr125/150 etc?

[@2HotWheels]

650 iB “ Brock from Brock exhauussstt

[@rolandkeith5322]

Some thing to think about...🤔

[@cycledrag]

Sure is

[@vladak8289]

def. too much acting

[@cycledrag]

No BS, we were just being ourselves and trying to relay the information in the best way possible. Please subscribe to this channel and get your motorcycle friends to do the same and I'll keep it coming.

[@element-ki3gz]

I ENDED UP WITH A ZX14R THAT HADE THESE ON IT I DIDNT EVEN KNOW IT AND OWNER DIDNT KNOW SCORE BIG TIME

[@goldstinemedia7167]

any leads where i can get a set for a 2018 fxbb

[@jeromybenavides5625]

Uhhh... yeah, you can order them from the source. The guy on the left has a shirt with the name on it.

[@briangc1972]

Carbon fiber rims are not as durable as any commercially available metal rim. There are videos of street riders whose carbon fiber rims failed midway through a corner simply due to the repeated flexing of the rims. Metals have a higher fatigue cycle failure rate (higher is better- more cycles vs lower). All materials eventually fail due to fatigue. Metal gives you a warning, carbon fiber fails catastrophically without warning.

[@Taste_Budz]

I only use them on track - they will break if I daily them living in Quebec😂

[@charltheron2769]

BST => Proudly South African

[@ToastyClam]

Why did you guys not use an alloy wheel. No one with a spiked wheel is changing it to carbon fiber

[@diamondheat9]

That would eliminate the need because forged alloy wheels are a little heavier than CF but have longevity where carbon will crack/shatter for street use. Gotta push the carbon fiber sales

[@WHITEHEADTJ71]

I'm actually considering it and there's others that have. thanks for speaking for us though lol

[@brattpark790]

Is it possible i can order of carbone wheel for my new 2020 road king special 21" or 22" or 23" and also for rear?

[@sb-cy1dn]

How many pounds I can save on my 2020 kawasaki ninja 400?

[@justinburtonracing5135]

The wheels would be more expensive then the bike lol

[@connor3288]

I don't think carbon fiber wheels should be street legal. They are very sensitive to any cracks, way more so than steel/alloy wheels, and can fail spectacularly. Look up bmw s1000 carbon wheel failure. If you need to have wheels ultrasounded for cracks, probably not the best for regular use...😮

[@keithewen5818]

Try them against magnesium! That’s why all rally cars use carbon fibre! 😂😂

[@johnnyanonymous582]

Last thing he says is UTTER rubbish. Here's some facts,.... a carbon rear is 3 lbs lighter than stock,...a carbon front is 2 lbs lighter than stock. The question is......is saving 5 lbs worth $4000.........to most, it's not.

[@johnjones5977]

You obviously know nothing about rotational mass. It is definitely worth 7:1 compared to unsprung weight. Please study up before spewing your ignorance on here.

[@briangc1972]

Add to the fact that carbon fiber is not as durable as any commercially available rim. There are videos of street riders whose carbon fiber rims failed midway through a corner simply due to the repeated flexing of the rims. Metals have a higher number of cycles before fatigue failure. All materials eventually fail due to fatigue. Metal gives you a warning, carbon fiber fails catastrophically without warning.

[@keithewen5818]

Full steel wheels against carbon fibre 😂