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Time to replace new tires ?

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Time to replace new tires ?

Old 04-10-13, 08:33 AM
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Time to replace new tires ?

Running on a pair of Vittoria Zaffiro Pro, clocking around 6300km currently, never a puncture. there's some tiny cuts on the tyre itself which I assume is normal from the mileage itself but not sidewall. Just wondering should I replace them already or continue using it till I got a puncture ?
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Old 04-10-13, 08:47 AM
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now that you've said something you'll probably get a flat. I doubt I'd replace them until I had a problem, just make sure you carry a spare tube/tire with you when you ride.
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Old 04-10-13, 08:54 AM
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If you wonder it is probably time.
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Old 04-10-13, 08:54 AM
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Wait until you start flatting to change them, or if you feel like it get new ones. Myself, I put a new chain, cassette, and GP4000 tires on every 3,000 miles regardless (if they all make it that long). $100 every 3,000 miles is cheap for a hobby, in my opinion.

On the same token, there are people here who will routinely get 5,000 miles on a set of tires, so your budget, and preferences will make the call. It's not a matter of safety or requirement.
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Old 04-10-13, 09:07 AM
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Are you seeing any threads? If so toss them. Otherwise I would probably wait until I started having problems.
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Old 04-10-13, 09:14 AM
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I replaced the standard Zaffiro on my rear wheel when it acquired a squared off profile. That was with about half the mileage on it that your pros have. The front tire from that set is still going strong.
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Old 04-10-13, 09:20 AM
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Originally Posted by kv501
Wait until you start flatting to change them, or if you feel like it get new ones. Myself, I put a new chain, cassette, and GP4000 tires on every 3,000 miles regardless (if they all make it that long). $100 every 3,000 miles is cheap for a hobby, in my opinion.

On the same token, there are people here who will routinely get 5,000 miles on a set of tires, so your budget, and preferences will make the call. It's not a matter of safety or requirement.
I'd like to know where you get a chain, cassette, and new gp4ks for only $100
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Old 04-10-13, 09:23 AM
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Originally Posted by seymour1910
I'd like to know where you get a chain, cassette, and new gp4ks for only $100
was kinda wonderin that myself
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Old 04-10-13, 09:24 AM
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Originally Posted by kv501
Wait until you start flatting to change them, or if you feel like it get new ones. Myself, I put a new chain, cassette, and GP4000 tires on every 3,000 miles regardless (if they all make it that long). $100 every 3,000 miles is cheap for a hobby, in my opinion.

On the same token, there are people here who will routinely get 5,000 miles on a set of tires, so your budget, and preferences will make the call. It's not a matter of safety or requirement.
If you are good about changing your chain every 3k, there should be little need to replace the cassette each time.
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Old 04-10-13, 09:29 AM
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Originally Posted by LowCel
Are you seeing any threads? If so toss them. Otherwise I would probably wait until I started having problems.
ya, pretty much...
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Old 04-10-13, 09:30 AM
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I never replace new tires.
I replaced used ones when I see cords.
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Old 04-10-13, 09:35 AM
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Originally Posted by Yo Spiff
I replaced the standard Zaffiro on my rear wheel when it acquired a squared off profile.
The profile on a tire will square off, long before the useful life of the tire is up. The squared off profile isn't a problem, particularly on a rear tire.

If you're particularly risk adverse, you can take squared off tires off the front and put them on the back.

Personally, I run tires until the cord shows.
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Old 04-10-13, 10:08 AM
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why replace?
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Old 04-10-13, 10:17 AM
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Originally Posted by LowCel
Are you seeing any threads? If so toss them. Otherwise I would probably wait until I started having problems.
Originally Posted by merlinextraligh
The profile on a tire will square off, long before the useful life of the tire is up. The squared off profile isn't a problem, particularly on a rear tire.

If you're particularly risk adverse, you can take squared off tires off the front and put them on the back.

Personally, I run tires until the cord shows.
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Old 04-10-13, 11:16 AM
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I run em until I see the cords.
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Old 04-10-13, 11:31 AM
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Agree with others - ride them till you see the cords or other major damage.
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Old 04-10-13, 11:40 AM
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I get flats on new tires and flats on well worn tires. I replace when the cords start showing (or if there's structural damage/cut to the cords). Move good front tire to rear and put new on front.
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Old 04-10-13, 12:45 PM
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Originally Posted by Looigi
I get flats on new tires and flats on well worn tires. I replace when the cords start showing (or if there's structural damage/cut to the cords). Move good front tire to rear and put new on front.
+1
Funny thing: The first year I ran a new pair of Gatorskins on one bike, I had a flat aprox every 6 weeks all year. The next year I had a flat on the first ride in early spring, then no more flats all year. Late that fall I saw cords showing, and discarded the rear tire. So in my experience, I had more flats in the first half of the tires life than in the second. Just shows how arbitrary one persons data point can be.
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Old 04-10-13, 12:47 PM
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Random question, does tire wear affect performance? Like let's say will a squared off tire cause any extra drag or increase rolling resistance? And hard cornering like let's say in a race? (Asking because I replaced my old tires which had about 3k miles and 0 flats only because the profile was squared off and was told to replace before a race, they still rolled fine without any problems or wires showing)
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Old 04-10-13, 12:52 PM
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Originally Posted by cvall91
Random question, does tire wear affect performance? Like let's say will a squared off tire cause any extra drag or increase rolling resistance? And hard cornering like let's say in a race? (Asking because I replaced my old tires which had about 3k miles and 0 flats only because the profile was squared off and was told to replace before a race, they still rolled fine without any problems or wires showing)
Thinner tread == less rolling resistance.
Thinner tread == less weight.

Every tire is going to get squared off unless you stop spending most of your time riding a straight line.

I've never seen any data about cornering grip with a squared off tire. But bear in mind physics dictates your contact patch will *always* have the same area.

Last edited by Shimagnolo; 04-10-13 at 06:20 PM.
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Old 04-10-13, 03:19 PM
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Originally Posted by seymour1910
I'd like to know where you get a chain, cassette, and new gp4ks for only $100
I have to apologize. I looked back and see I was under by $17.

The last time I ordered 4 GP4Ks from PBK on sale @ $38 each, KMC 10 speed chain on eBay for $18.39, and an unused 105 cassette for $23.39 (I always get LBS take-off cassettes). Grand total $117.78.
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Old 04-10-13, 05:35 PM
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Originally Posted by kv501
I have to apologize. I looked back and see I was under by $17.

The last time I ordered 4 GP4Ks from PBK on sale @ $38 each, KMC 10 speed chain on eBay for $18.39, and an unused 105 cassette for $23.39 (I always get LBS take-off cassettes). Grand total $117.78.
But even then, I thought cassettes were supposed to last a lot longer than 3,000 miles.
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Old 04-10-13, 06:07 PM
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Originally Posted by cvall91
But even then, I thought cassettes were supposed to last a lot longer than 3,000 miles.
They are.
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Old 04-10-13, 06:50 PM
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Replace 1 ride before it looks likes this. Small cut on Vittorias are normal.
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Worn tire 2.jpg (65.6 KB, 46 views)
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Old 04-10-13, 07:07 PM
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Originally Posted by cvall91
But even then, I thought cassettes were supposed to last a lot longer than 3,000 miles.
If chains are replaced properly you should get at least 10-15k miles out of a cassette. I always do anyway.
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