Is 5000 miles for a Shimano Ultegra 6800 Bottom Bracket reasonable

[Deleted member 35268]

It started making noises a few weeks ago.

I've had it out and greased up all the joints but the issue is inside.

I think 5K is about right??

Or is that a little soon?

 

[DCLane]

It depends on weather and use - I've gone through them in as little as 2000 miles but up to 6000 in some cases.

Unfortunately they don't appear to be long-lasting. As a result I've fitted an Aerozine BB to my commuter bike.

 

[Deleted member 35268]

Oooh, they are a bit sexy! (the Aerozine BB) thanks - I might go that way

 

[ianrauk]

It really is a case of how long is a piece of string.
Go out in a lot of wet weather and crappy winter roads and you'll kill a BB quicker then if you went out in only dry.

Replace with a cheaper alternative. I have found they're all much muchness.

 

[Smokin Joe]

Replace with a cheaper alternative. I have found they're all much muchness.

Not sure about that. I replace a Veloce BB with a Centaur and it outlasted the original a few times over.

 

[ianrauk]

Not sure about that. I replace a Veloce BB with a Centaur and it outlasted the original a few times over.

Fair enough, I was looking at it on the Shimano hierarchy.

 

[Svendo]

FWIW I got a Hope hollowtech II BB which has lasted without complaint through two winters, including this last very mucky gritty one. I guesstimate it’s fine about 6-7000 miles so far.

 

[ianrauk]

FWIW I got a Hope hollowtech II BB which has lasted without complaint through two winters, including this last very mucky gritty one. I guesstimate it’s fine about 6-7000 miles so far.

And what is great about Hope BB's is that the bearings are changeable.

 

[Tenacious Sloth]

FWIW I got a Hope hollowtech II BB which has lasted without complaint through two winters, including this last very mucky gritty one. I guesstimate it’s fine about 6-7000 miles so far.

And what is great about Hope BB's is that the bearings are changeable.

For £90 I'd expect it to pedal for me as well!

 

[Threevok]

For £90 I'd expect it to pedal for me as well!

Don't look at Chris King then

 

[Svendo]

Don't look at Chris King then

Crickey that’s gone up I got mine for about £45 but that was reduced and about 6 years ago. (There was a long delay in fitting it as the previous DA bottom bracket refused to give up)

 

[Threevok]

Crickey that’s gone up I got mine for about £45 but that was reduced and about 6 years ago. (There was a long delay in fitting it as the previous DA bottom bracket refused to give up)

Wow that was a bargain - even then

I wanted a gold BB for the single speed and nearly had a heart attack when I saw the price. In the end I settled for Shimano Saint

 

[Crankarm]

It started making noises a few weeks ago.

I've had it out and greased up all the joints but the issue is inside.

I think 5K is about right??

Or is that a little soon?

It's a sealed BB so you cannot open it up and service it. Need to bin and replace. As others have said longevity is affected by so many factors not least by grotty weather but also by riding style. If you push heavy gears your transmission isn't going to last as long as a rider who is kinder to their transmissions and therefore less grinding forces on the BB.

 

[Deleted member 35268]

It's a sealed BB so you cannot open it up and service it. Need to bin and replace. As others have said longevity is affected by so many factors not least by grotty weather but also by riding style. If you push heavy gears your transmission isn't going to last as long as a rider who is kinder to their transmissions and therefore less grinding forces on the BB.

Well, I do a lot of hills - a 1000 feet every day of the week, then 2000 feet at the weekend. So I guess it's not just miles but climbing that wears them down. thanks

 

[bpsmith]

I am more a grinder than a spinner and my PF30 has done 4,600 on one bike, in all sorts of weather, and still going. Their notorious for not lasting long, if believe online claims.

Personally, the grinding argument doesn’t seem to fit with my experience.