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Help! Crack in tires/other advice?

I'm by no means a proficient bicyclist, but recently my friend, who really is in to bicycling gave me his bike from when he was little. (He's now really tall >.>, so it fits me well enough) It is probably a 300 dollar REI bike, which is still waaay nicer than anything I've ever had (39 dollar walmart bikes much :( )

In any case, the tires and tubes were sort of old. But the weirdest thing is that these random cracks started to appear in both front and rear tires. Some are longer than the one pictured below, some shorter. In any case, they all go all the way through. Is it an age problem ,are they inflated too much? What is the problem.

http://imgur.com/RdZ1Q

Secondly, today I had a fairly major hole in the tire. I just went over a small bump at like 30mph, and heard a loud pop. Is it worth trying to patch?

Thirdly, if the tires need to be replaced (do they) What would be a cheap but half reasonable quality replacement? I guess I could go more upscale, but seeing as this bike seems amazingly nice compared to my walmart bicycle shaped object, I think I"ll take it slow before getting to a really nice one >.> The tires are 26" 1.25" hybrids.

(The bike in question: http://i.imgur.com/5U9zq.jpg )

12 comments
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level 1
3 points · 7 years ago

Probably dry rotted if the bike has been siting for a few years. You'll need new tires and tubes. Your LBS can hook you up with something fairly cheap. As far as pressure goes, the side walls will have a range you need to run them at.

level 2
Original Poster1 point · 7 years ago

Yeah, at least I can rest assured that my pressure was reasonable. 75 psi...

What is LBS? Local bike shop?

level 3
[deleted]
1 point · 7 years ago

Yes.

level 4
Original Poster2 points · 7 years ago

Now to convince the parents that OSH is not the LBS.

level 3

Yeah. Performance is a cheap option that is in many towns.

level 4
Original Poster1 point · 7 years ago

thanks. I hope I can make it work. Mostly I'm scared of my parents giving me shit for going to a bike shop instead of a hardware store >.>

level 1
Original Poster2 points · 7 years ago

Went to performance. Went ahead and got two new tires, and two new tubes. Installed both tires and one tube. Leaving the other one in reserve. Surprisingly cheap. Now to figure out what to buy.

level 1

If that's what your tires look like (where is this major hole?), you're fine.

They're usually small cuts that occur from riding.

level 2
Original Poster2 points · 7 years ago

Major hole is tube.

level 1
  1. It's kind of hard to say from that little sample of tire that you show, but if that is representative of the rest of the tire, they probably have quite a few miles left in them.

  2. That 30 mph bump may have caused more than one hole. You may have a snake bite if it pinched at both sides of the rim. In any event, it's hard to say without looking. My own default would be to try to patch it.

  3. You might look here for a replacement if you go that route.

level 2
Original Poster2 points · 7 years ago

thanks. I'm sure it is only one. Just one in the top of the tire.

level 2
Original Poster2 points · 7 years ago

Still wonder what caused the blowout.

There are a couple larger holes than the one that I show, but nothing more than 1.5x the length.

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