27 1 1/8 Tire on 27 1 1/4 Wheel
07-13-14, 05:30 PM
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27 1 1/8 Tire on 27 1 1/4 Wheel
This is driving me nuts. I am trying to put new tires on an 80s Univega Nuovo Sport. The rims are 27 1 1/4 and the tires are Vittoria Zaffiro 27 1 1/8. No matter what I do I can't get the tire on woithout pinching the tube. They are so hard to get on. I have plenty of eperience changing tires. Should I give up and m0ove to 27 1 1/4 tires which is what was on the bike before? Do these tires have unusually hard bead?
07-13-14, 05:37 PM
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How wide are your rims? You might want to access Sheldon Brown's website for a tire/rim compatability chart.
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07-13-14, 05:38 PM
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Some tires are just harder to mount than others.
Try these tight tire tricks.
1- inflate tube until round but not stretched to stuff into the tire, and after stuffing move over onto the rim so the 2nd side of the tire lies flat against the rim with no tube trying to pull down.
2- start mounting the 2nd bead opposite the valve, working both sides to the valve and ending there.
3- when you meet some resistance bleed the tube and push the bead to the center of the rim where it's deepest, pushing the slack forward toward the valve on both sides.
4- hopefully you can push the final bit over at the valve without tools. If not consider a tire jack made by Koolstop or Var.
5- finish by pushing the valve deep into the tire to pull up any tube that might be trapped under the bead, then pull back down to seat both the valve and tire.
Try these tight tire tricks.
1- inflate tube until round but not stretched to stuff into the tire, and after stuffing move over onto the rim so the 2nd side of the tire lies flat against the rim with no tube trying to pull down.
2- start mounting the 2nd bead opposite the valve, working both sides to the valve and ending there.
3- when you meet some resistance bleed the tube and push the bead to the center of the rim where it's deepest, pushing the slack forward toward the valve on both sides.
4- hopefully you can push the final bit over at the valve without tools. If not consider a tire jack made by Koolstop or Var.
5- finish by pushing the valve deep into the tire to pull up any tube that might be trapped under the bead, then pull back down to seat both the valve and tire.
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Just because I'm tired of arguing, doesn't mean you're right.
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07-13-14, 06:20 PM
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A couple things to add to FB's suggestions:
1) in step 3 (pushing the bead to the center of the rim) it helps if the rim tape is as thin as possible. If yours is standard cloth or plastic tape you might try replacing it with either thin tape or veloplugs.
2) spraying a bit of soapy water on the rim where you're trying to get the last bit of tire bead over the edge can make it slide over easier.
1) in step 3 (pushing the bead to the center of the rim) it helps if the rim tape is as thin as possible. If yours is standard cloth or plastic tape you might try replacing it with either thin tape or veloplugs.
2) spraying a bit of soapy water on the rim where you're trying to get the last bit of tire bead over the edge can make it slide over easier.
07-13-14, 06:23 PM
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there have been plenty of "hard to mount tire" threads on this forum and plenty of advice that, IME, has been of little help. what i have finally done is to learn how to mount a tire with tire irons, without pinching the tube.
it took me about five tubes to up my batting average from about 200 to 900.
it took me about five tubes to up my batting average from about 200 to 900.
07-14-14, 03:24 AM
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Thanks guys for all the great advice .. my tape is standrad cloth .. next time I will try with thinner tape to give the tube some room. I will report back when I have had another opportunity.
07-19-14, 09:25 PM
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I have returned the Vittoria Zaffiro tires. They are known to be hard to mount. I have ordered simple Kenda tires and I am hoping mounting those will be easier. Thanks for all the help.
07-20-14, 06:36 PM
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Soapy water works. Find an old small bottle, make a solution of water and dish soap, and keep it in your tire changing kit.
07-20-14, 08:16 PM
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Another approach: Have your local bike shop mechanic mount them just this once. They will stretch, and they'll get easier to dismount and remount.
I'm an expert mechanic, but a couple of years ago, I brought a difficult tire to my LBS, just because.
I'm an expert mechanic, but a couple of years ago, I brought a difficult tire to my LBS, just because.
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Tom Reingold, tom@noglider.com
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“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
