tyre's durability

"Stefan Recke" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

How long is a roadbike tyre likely to live, I mean how many Kilometers approximatly!

Depends on the tyre and other factors.

Quoted message said:

Because I cannot see the tread becoming less???

Have ridden my current one about 900 Kilometers...

Do I already have to be afraid of doing the next "Street Downhill" or will it take a few
more trips?

Sounds as though you have a lot of life left in this tyre. They can go for 1000's of kilometres
sometimes. A tyre is worn out either when it has picked up a big cut, or number of tiny cuts that
lead to frequent punctures, or when the canvas starts to show through.

--
Dave...

"Stefan Recke" <[email hidden]> wrote in news:bcc4mn$stl$1 @ns2.fe.internet.bosch.com:

Quoted message said:

How long is a roadbike tyre likely to live, I mean how many Kilometers approximatly!

Varies with tire make and model. Racing tires may get 2000km or less. Touring tires may get several
times that.

Stefan Recke said:

How long is a roadbike tyre likely to live, I mean how many Kilometers approximatly!

Quoted message said:

Because I cannot see the tread becoming less???

Quoted message said:

Have ridden my current one about 900 Kilometers...

Quoted message said:

Do I already have to be afraid of doing the next "Street Downhill" or will it take a few
more trips?

It is shot when you see the cords showing through the rubber. Rear tires will wear at least twice
as fast as fronts. Actual mileage depends on the amount of tread the tire had when new, your
weight, etc.

You should certainly get more than 900 km. For a rear tire 3000 km would be reasonable for
some tires.

Art Harris

Stefan Recke said:

How long is a road bike tyre likely to live, I mean how many Kilometers approximately! Because I
cannot see the tread becoming less??? Have ridden my current one about 900 Kilometers... Do I
already have to be afraid of doing the next "Street Downhill" or will it take a few more trips?

Tires have a broad range of durability and riding conditions have a range of influence on that
durability. Assuming that you haven't chosen the lowest quality tire (good casing) you can safely
ride the tire until casing cords begin to show and then some. From the first sign of cords in a rear
tire, there are usually about 150km before the tire might burst, not that you should try this but
that is only to give an indication that cords showing is not the end of the tire but still a safe
time to make a replacement.

Carbon black tires, in contrast to colored (non carbon) tires with touring in mind usually last
for close to 5000km, such as the smooth tread Avocet, Michelin, Continental and others with 25mm
cross section.

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Jobst Brandt [email hidden] Palo Alto CA