BT021 - opinions?
Thread Starter
|
Senior Member
Joined: Jun 2006
Posts: 320
Likes: 1
From: Surbiton, Surrey, UK
Thanks for your replies. Just to clarify...
The tyre has a few thousand miles on it.
I use it for London commuting, 35 miles a day, ten miles fast riding but the rest through traffic, through one-way systems etc.
It began to feel skittish about 150 miles ago and is now scary.
Like my last BT021 front tyre it seems to have cupped all the way round on both sides.
Where the cupping is the rubber is really rough.
The centre of the tyre is slightly flat but tread in the middle is good.
Please see my drawing for a cross-section (slightly exaggerated).
Think I'm going to leave Bridgestone and try something else.
The tyre has a few thousand miles on it.
I use it for London commuting, 35 miles a day, ten miles fast riding but the rest through traffic, through one-way systems etc.
It began to feel skittish about 150 miles ago and is now scary.
Like my last BT021 front tyre it seems to have cupped all the way round on both sides.
Where the cupping is the rubber is really rough.
The centre of the tyre is slightly flat but tread in the middle is good.
Please see my drawing for a cross-section (slightly exaggerated).
Think I'm going to leave Bridgestone and try something else.
Senior Member
Joined: Feb 2011
Posts: 223
Likes: 0
Thanks for your replies. Just to clarify...
The tyre has a few thousand miles on it.
I use it for London commuting, 35 miles a day, ten miles fast riding but the rest through traffic, through one-way systems etc.
It began to feel skittish about 150 miles ago and is now scary.
Like my last BT021 front tyre it seems to have cupped all the way round on both sides.
Where the cupping is the rubber is really rough.
The centre of the tyre is slightly flat but tread in the middle is good.
Please see my drawing for a cross-section (slightly exaggerated).
Think I'm going to leave Bridgestone and try something else.
The tyre has a few thousand miles on it.
I use it for London commuting, 35 miles a day, ten miles fast riding but the rest through traffic, through one-way systems etc.
It began to feel skittish about 150 miles ago and is now scary.
Like my last BT021 front tyre it seems to have cupped all the way round on both sides.
Where the cupping is the rubber is really rough.
The centre of the tyre is slightly flat but tread in the middle is good.
Please see my drawing for a cross-section (slightly exaggerated).
Think I'm going to leave Bridgestone and try something else.
Administrator, MVN / ROTM NOV 2012
Joined: Aug 2008
Posts: 11,003
Likes: 3
From: Republic of Boon Island
Another few thoughts , is your front wheel alignment correct ? (inrelation to the rear)
Are the front bearings kaput ? Are the forks themselves slightly out
of alignment as in not dead "square" / "parrallel" to each other ??
All issues than can produce the ride and wear issues you mention.
But as I may have mentioned or alluded to previously , when my forks
were leaking .... cupping of my front tire came about fairly quickly and
the ride was best described as being totally squirrely ! and had that
very unplanted feeling up front as with cupping of the tire in my opinion
make it (the tire) become unbalanced !
Are the front bearings kaput ? Are the forks themselves slightly out
of alignment as in not dead "square" / "parrallel" to each other ??
All issues than can produce the ride and wear issues you mention.
But as I may have mentioned or alluded to previously , when my forks
were leaking .... cupping of my front tire came about fairly quickly and
the ride was best described as being totally squirrely ! and had that
very unplanted feeling up front as with cupping of the tire in my opinion
make it (the tire) become unbalanced !
Last edited by Sprock; May 26, 2011 at 04:33 PM.
Senior Member & Lord of the Odometer (300,000 Mles) & Counting
Joined: Oct 2005
Posts: 812
Likes: 0
From: Rebel Cave in the Carolinas
Hey:
out of balanced front tire, out of alignment rear wheel, loose steering stem, uneven fork fluid, or bent wheel, all can give this symptom or cause the tire to wear quickly and cup. please check all of these 1st before new tires or you will be buying another new set before you should be.
From my experience Michelins, Metzelers, Avons and Contis all wear and perform well in the UK weather. Also if your on a budget Shinkos work well and last very good, wet or dry but not as good as the other 4 mentioned. I have had poor luck with Bridgestones and Dunlops over time as they both used to be my preference in the UK, but they would wear funny and not the most fun in the rain. After leaving the UK and Europe to move to the US in the Carolinas I have steered clear of them as they tend to dry rot more so than the others when in stowage for me.
Dub
out of balanced front tire, out of alignment rear wheel, loose steering stem, uneven fork fluid, or bent wheel, all can give this symptom or cause the tire to wear quickly and cup. please check all of these 1st before new tires or you will be buying another new set before you should be.
From my experience Michelins, Metzelers, Avons and Contis all wear and perform well in the UK weather. Also if your on a budget Shinkos work well and last very good, wet or dry but not as good as the other 4 mentioned. I have had poor luck with Bridgestones and Dunlops over time as they both used to be my preference in the UK, but they would wear funny and not the most fun in the rain. After leaving the UK and Europe to move to the US in the Carolinas I have steered clear of them as they tend to dry rot more so than the others when in stowage for me.
Dub
Last edited by CBR1988; May 27, 2011 at 08:06 AM.
Senior Member
Joined: Apr 2011
Posts: 102
Likes: 0
From: Live Oak , Fl
CBR1988
I would have some serious thought at getting at the problem of what's causing the tire to wear like that and get it fixed before you get hurt .
I wouldn't even ride a bike doing that ,, wow,, scary stuff there.
I don't even think Steve-o would ride a bike doing that on jack-*** (the movie) ,, then again ,, I think he would . LOL! But he makes big bucks doing crazy stuff. LOL!! Be Careful hmm.
Hey:
out of balanced front tire, out of alignment rear wheel, loose steering stem, uneven fork fluid, or bent wheel, all can give this symptom or cause the tire to wear quickly and cup. please check all of these 1st before new tires or you will be buying another new set before you should be.
out of balanced front tire, out of alignment rear wheel, loose steering stem, uneven fork fluid, or bent wheel, all can give this symptom or cause the tire to wear quickly and cup. please check all of these 1st before new tires or you will be buying another new set before you should be.
I wouldn't even ride a bike doing that ,, wow,, scary stuff there.
I don't even think Steve-o would ride a bike doing that on jack-*** (the movie) ,, then again ,, I think he would . LOL! But he makes big bucks doing crazy stuff. LOL!! Be Careful hmm.
Thread Starter
|
Senior Member
Joined: Jun 2006
Posts: 320
Likes: 1
From: Surbiton, Surrey, UK
Thanks for all the suggestions folks.
I replaced the bearings a year or two ago, the forks and general ride felt OK (until last week), the tyre was running at 36psi. Today I had a pair of Michelin Pilot Road 2s fitted and the bike now feels fine again. I can ride no-hands at 30, 40, 50, 60mph without a wobble.
I might get round to overhauling the forks soon but in the meantime (after 20 miles on the new rubber) she rides fine once again.
I replaced the bearings a year or two ago, the forks and general ride felt OK (until last week), the tyre was running at 36psi. Today I had a pair of Michelin Pilot Road 2s fitted and the bike now feels fine again. I can ride no-hands at 30, 40, 50, 60mph without a wobble.
I might get round to overhauling the forks soon but in the meantime (after 20 miles on the new rubber) she rides fine once again.
Thread
Thread Starter
Forum
Replies
Last Post
ffingers
Off Topic
17
Jan 13, 2008 10:22 AM
