Average Carbon rim life?

Everything about building wheels, glueing tubs, etc.
maxice
Posts: 80
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

I'm considering disk vs rim brake options for a new bike build.

How many miles would a set of rim brake carbon rims last (for something like a Bora one or Zipp 303?

67kg rider, would mainly be used in the dry or wet only if caught out in the rain.

Marin
Posts: 3412
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

67kg, mostly dry: basically forever.

I sill don't have any significant wear on my 2013 Farsports rims, which are my most ridden set.

by Weenie


bm0p700f
in the industry
Posts: 4721
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
Contact:

by bm0p700f

How long is a price of string. It depends on pads used, weather conditions, how well you clean your pads....

You might as well ask how long will you live. Who knows.

maxice
Posts: 80
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

bm0p700f wrote: ↑
Wed Sep 12, 2018 1:14 pm
How long is a price of string. It depends on pads used, weather conditions, how well you clean your pads....

You might as well ask how long will you live. Who knows.
Dry weather, proper carbon pads cleaned well after each use

Asking on average as i have no idea....1k miles, 10k miles??

User avatar
Calnago
Posts: 7991
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

Can’t speak for the zipps, but for the Boras.... 67kg, dry weather.... ha... at 10,000 miles they will just be getting warmed up. You may find it difficult to distinguish them from new.
The rim wear argument for disc brakes is a red herring as far as I’m concerned. Get discs for other reasons if you want, but not rim wear. Unless perhaps, you’re commuting daily in extreme foul weather all year long and grinding sand and muck into the rims.
Colnago C64 - The Naked Build; Colnago C60 - PR99; Trek Koppenberg - Where Emonda and Domane Meet;
Unlinked Builds (searchable): Colnago C59 - 5 Years Later; Trek Emonda SL Campagnolo SR; Special Colnago EPQ

joejack951
Posts: 516
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE

by joejack951

Far more important than any other factor, IMO, is the local terrain and traffic controls. By the latter, I am referring to how often you encounter stop signs or red lights at the bottom or in the middle of steep hills. Steep hills on their own don't pose any brake issues assuming you don't drag your brakes, but if you are repeatedly going from 50-70 kmh down to 15 or 0, that will take a toll on your rims. It gets much worse if you combine rain with that type of use.

On flat roads in mostly dry weather, I wouldn't worry too much about it.

Marin
Posts: 3412
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

maxice wrote: ↑
Wed Sep 12, 2018 2:24 pm
Asking on average as i have no idea....1k miles, 10k miles??
My guess is that at 20k miles you'll look at your brake tracks and wonder whether there's any wear at all.
Last edited by Marin on Thu Sep 13, 2018 8:20 am, edited 1 time in total.

User avatar
silvalis
Posts: 604
Joined: Mon Sep 07, 2015 1:02 am
Location: Aus

by silvalis

Meanwhile, you’ll probably have to replace your rotor when it gets too thin before the 10k mark. Not that that’s an issue.
Chasse patate

alcatraz
Posts: 1956
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

It's a combination of:

Pads (hard or soft)
Rider weight
Terrain (climbing a lot?)
Braking technique
Cleaning intervals
Brake track quality
Thickness of braketracks
Overheating

At 67kg if you aren't doing something very wrong you can expect the rims to last many many maaany years. :lol:

robertbb
Posts: 865
Joined: Thu Jul 23, 2009 3:35 am
Location: Melbourne, Australia

by robertbb

Calnago wrote: ↑
Wed Sep 12, 2018 2:38 pm
Can’t speak for the zipps, but for the Boras.... 67kg, dry weather.... ha... at 10,000 miles they will just be getting warmed up. You may find it difficult to distinguish them from new.
The rim wear argument for disc brakes is a red herring as far as I’m concerned. Get discs for other reasons if you want, but not rim wear. Unless perhaps, you’re commuting daily in extreme foul weather all year long and grinding sand and muck into the rims.
I know you love your Bora's. As I do mine (which I ride sparingly). But I've seen plenty of Bora's with braking surface well worn. Over time (a few years of regular use) it goes from that matte grey-ish finish towards a gloss/transparent finish. Run your finger over it and you can feel a difference in the surface. That's on 3diamante rims. We've also seen plenty of accounts from people who have Ac3 surface and the grooves have all but disappeared in a single season indicating that they do wear.

So yeah, love your kit - and you should, you have great taste in your equipment - but it aint made of unobtanium :beerchug:

User avatar
Calnago
Posts: 7991
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

The thing is, some people seem to be so afraid of wearing out carbon rims when in fact it is really hard to do. An alloy rim is much softer and much more prone to wear than carbon, so if you are wearing through a few alloy rims each season then sure, maybe your conditions are pretty darn harsh and you should consider this. Any time there is contact between surfaces there will be some wear, but for this lightweight user riding in dry conditions he’s not going to have to worry about it, at all, for many seasons and miles. And 10,000 miles imo would be on the very very low end of what he could expect.
Also, those light semicircle “grooves” in the AC3 track of the new Boras are simply an artifact of the production process. They are also present in the older Boras, just not easily visible.
Colnago C64 - The Naked Build; Colnago C60 - PR99; Trek Koppenberg - Where Emonda and Domane Meet;
Unlinked Builds (searchable): Colnago C59 - 5 Years Later; Trek Emonda SL Campagnolo SR; Special Colnago EPQ

LionelB
Posts: 1586
Joined: Sun Oct 05, 2008 8:09 pm
Location: Aix en Provence

by LionelB

Bora ultra II campy pads used year round in Aix en provence 85kg, 60000 km, 2 crashes. Brake track looks very good.


Sent from my iPhone using Tapatalk

alcatraz
Posts: 1956
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

There you go.. 60.000km and still going on strong..

Very impressive

Now not to forget that campy carbon wheels are top of the line quality wise. Other wheels will most likely not amount to the same, but should be reasonably close.

Surface treatments however are only temporary, they wear and sooner or later everyone will be down to bare carbon eventually. So I don't see much disadvantage in just getting a normal cheaper untreated brake track and just get used to it's initial unimpressive braking. Braking performance is going to stay the same through out the life of that wheelset. After a while you will have found the brake pads that you like the most. Everyone likes different because we live in different climates, weigh different, have different brake calipers and ride different terrain.

If you like climbing and descending then just get the high temperature resin wheels. If you're light you can use some old carbon wheels but don't take that chance if you are heavy and intend to do some steep descents on an older wheelset. Both big brand and chinese wheels carbon technology has progressed far in the last 5-10 years. A chinese wheel might today perform like a 3-5y old big brand carbon wheelset.

/a

bm0p700f
in the industry
Posts: 4721
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
Contact:

by bm0p700f

it really depends on conditions. my first set were doing fine until I rode them in march on the strada bianca course. it as wet and the grinding paste wore eveything out including my rims. They did 20,000km in shity conditions as well a nice dry days.

Give them to me and I'll wear them out for you. Its a service I provide. No charge either.

by Weenie


User avatar
Matt28NJ
Posts: 103
Joined: Tue Jul 14, 2009 3:16 am

by Matt28NJ

Calnago wrote: ↑
Thu Sep 13, 2018 12:31 pm
if you are wearing through a few alloy rims each season then sure, maybe your conditions are pretty darn harsh and you should consider this.

It surprises me to hear people talk about wearing through an alloy rim; I've got front wheels (which take the brunt of braking force) with over 25k miles on them that look new.

@Cal agree on the individual's conditions being the driver for any decision making on wheel life.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post