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When do you change your tires?(8 posts)

When do you change your tires?Me Dot Org
Nov 5, 2001 8:39 PM
I've got a Continental GP3000 on my rear wheel. It must have close to 2,000 miles on it. No nicks, still a little tread on the sides, but the main contact patch is bald, although no casing is showing yet.

Do you change a tire when it gets bald? Do you wait for a flat? If you change a tires before it goes flat, is that like washing your car to make it rain? Does it guarantee that I'll flat new tire immediately?
Nov 5, 2001 9:58 PM
(Hmm... You're working superstition into this right off. Eeenteresting...)

I personally would just leave it as long as you've still got rubber and your sidewall is doing ok. That's for regular riding of course. If you're going to race on this bike, grab a new tire, but these GP3000s cost enough that you'll want to milk them for all they're worth. Even after it's dead as far as road use goes, it might be ok on the trainer for a little while. Of course if you're Mr. Moneybags, then just get a new tire. I'm thinking through my wallet's perspective here!

ExpensiveKerry Irons
Nov 6, 2001 6:30 PM
GP 3000s are consistently $29 (US) at LaBicicletta. Doesn't seem too expensive to me. BTW, I run them until the casing starts to show through the tread (around 2500 miles on the rear for my 180 lbs) and have NEVER noticed that any tire flats more when the tread is thinner. I suppose it depends on the kind of flats you get, but around here it is all debris/glass chips that work their way through the tread and casing. Unless that debris is longer than the thickness of a worn tire but shorter than the thickenss of a new tire, there is not much argument for tires flatting more near the end of their life from this cause.
Nov 6, 2001 4:15 AM
90% of flats occur in the last 10% of tread life. It must be true, I read it in some tyre manufacturer's publicity somewhere...:)
Nov 6, 2001 9:23 AM
Yeah- when tires start to get down to their last days they tend to flatten more. In my own experience anyway. Bald is O.K., cuts and knicks that are questionable means I trash them. I'd say 2K on a Conti rear tire is getting close to the end of the road. How many more miles do you want to squeeze out of it? I go by any doubt, I chuck it. Then I can ride with the security of new tires and don't have to worry about it.
re: When do you change your tires?LC
Nov 6, 2001 10:07 AM
You can gamble a little with the rear tire and wait until you see casing treads or that flat that first flat. The tread is so minor on a GP3000, that I would not go by just looking at the tread. If you are doing long unsupported rides by yourself then you may not want to gamble as much. Never gamble with a front tire.
When they're shot.Rod
Nov 6, 2001 5:17 PM
That Conti doesn't have much noticable tread on it when it's new, so I don't go by that. I gage my tires by the condition of the casing. When the cuts and nicks in the tread begin to degrade the casing (that's what holds the air that holds you up), then I replace the tire. I rode my last set of Conti Ultra 2000s for 3,500 trouble free miles. YMMV.


re: When do you change your tires?LLSmith
Nov 7, 2001 3:14 AM
I have about 3500 miles on my bike and changed the front at around 2200-2500 miles. It had one small nick and that was enough to make me change it. I use a general rule for many things. If I have to ask myself "should I change this tire" its time for me to do it.If the front tire was newer and showed up with a nick or cut I would do the same thing.Some might consider me to be a wus, but I dont want to be thinking about my tires while going down a hill. I use the Michelin ap's.