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PostPosted: Fri Dec 18, 2009 2:03 pm 
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Joined: Wed Oct 03, 2007 10:05 am
Posts: 36
wheels: zipp 303 clincher 2008

tyres: GP4000S

no matter how much I tried, the bead has like 10cm outside the rim and cannot be forced in

tyres are 25-622

I can fit those tyres on fulcrum rim 622-15 though

anybody know wassup with the zipp? what size are they?

how can I avoid this in future when buying tyres for zipp

TIA :)


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Posted: Fri Dec 18, 2009 2:03 pm 


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PostPosted: Fri Dec 18, 2009 2:17 pm 
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Joined: Tue Sep 26, 2006 12:37 am
Posts: 5752
Location: Phoenix Arizona
It's snug, but I have used that exact combination...

There are a few wheel and tire combinations that are just a pain. Zipp build to a full 700 and the fitting is pretty close (and varies almost none as they have to fit carbon to the metal hoop). Conti build to the tight side...

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charles@pezcyclingnews.com


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PostPosted: Fri Dec 18, 2009 3:35 pm 
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Joined: Sat Jun 23, 2007 5:40 pm
Posts: 107
You may want to try some talcum powder, or soapy water. I had the same problem with neutron ultras and conti tires.


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PostPosted: Fri Dec 18, 2009 3:47 pm 
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Joined: Sun Nov 02, 2008 11:23 am
Posts: 83
Talc or var tyre levers (google them) they work a treat


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PostPosted: Fri Dec 18, 2009 4:11 pm 
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Joined: Wed Oct 31, 2007 10:32 pm
Posts: 8349
Location: Los Feliz, Los Angeles, California
and try really, really, really hard.

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Exp001 || Other projects in the works.


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PostPosted: Fri Dec 18, 2009 4:35 pm 
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Joined: Thu Nov 04, 2004 10:56 pm
Posts: 3722
Location: Wichita, KS
yeah...I've had some that pretty much just fell onto the rim with no force......and alternatively I've had some tires that didn't seem like they were the right size because they took gorilla force to get them on. Even did a double check to make sure I wasn't trying to put a 650 on a 700. :lol:

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This board and the world in general would be a much nicer place if everyone could just take themselves a little less seriously.


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PostPosted: Fri Dec 18, 2009 4:54 pm 
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Joined: Mon Jan 02, 2006 7:10 pm
Posts: 517
Yes, there are some poor combinations out there, but with perseverance, sweat, swearing and tears, they generally do go on.

Which is ok if you are in your living room, but when it is -4C outside, and you are stuck by the side of the road, your wife is at work, and it is getting dark, it is altogether less fun. Tyres do soften up with use, so it is decreasingly a problem, but I have, in the past, simply returned tyres and found ones are a better combination.


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PostPosted: Fri Dec 18, 2009 4:58 pm 
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Joined: Fri Jul 21, 2006 1:33 pm
Posts: 90
Location: Avon, Ohio
My 404's are tight with pretty much every tire. I do have GP4000's on there now but I had to use my plastic tire lever to pry the tire the last wee bit. It requires a bit of effort but it will go....

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Gary Solomons
SL4 Roubaix Di2
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PostPosted: Fri Dec 18, 2009 7:31 pm 
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Joined: Sun Sep 28, 2008 2:23 am
Posts: 663
Location: so. cal.
i have found that contis combined with anything are a hard fitting. this is what i do to to make my tires to fitt better tossthem in the oven at 150% for five to ten minutes take out set on the rim and ready before inflatting rub with a damped sponge.


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PostPosted: Fri Dec 18, 2009 7:42 pm 
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Joined: Wed Nov 25, 2009 6:05 pm
Posts: 5
Start installing the tire bead, opposite of the valve stem and finish off at the valve stem. Sometimes this makes it a bit easier...


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PostPosted: Fri Dec 18, 2009 7:58 pm 
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Joined: Sat Mar 14, 2009 6:08 am
Posts: 8269
Location: Geelong
roca's on the money - Conti tyres make me want to scream some time.

Exactly the same issues with them on Fulcrum rims.

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http://www.nicksquillari.com.au


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PostPosted: Fri Dec 18, 2009 9:58 pm 
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Joined: Tue Jan 27, 2009 8:12 pm
Posts: 213
Location: seattle wa
Make sure that the side of the tire which is already on the rim and the restof the side you are trying to put on are in the center of the rim bed, just like mounting a car tire. this ensures you have as much bead to work with as possible. but some combos are just plain hard, and that's why everyone should have one of these:

http://www.jensonusa.com/store/product/ ... px?sc=FRGL

the magic wand. every tire, every time.


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 Post subject: really pissed....
PostPosted: Wed May 15, 2013 8:32 am 
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Joined: Sun Jun 10, 2012 1:11 am
Posts: 872
as stupid as changing a flat may be.. i'm about fed up with this.

just got my farsport 38mm clinchers along with some new Michelin Pro4 Service Road tires.

man is it a biatch to install the Pro4 tires on there. the front tire went on just fine.. but the rear.. i already have 2 pinch flats and repaired it with the park patch. and just when it's reaching close to 85psi...it blows...

i already took the pro4 off once and put it back on.. not sure if i should do it again.

any suggestions on how to do this? hate to waste more patches.. but i don't have a spare tube laying around. :noidea:


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 Post subject: Re: really pissed....
PostPosted: Wed May 15, 2013 9:22 am 
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Joined: Sun Jun 10, 2012 1:11 am
Posts: 872
22 views and no suggestions? someone help a brother out...


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 Post subject: Re: really pissed....
Posted: Wed May 15, 2013 9:22 am 


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 Post subject: Re: really pissed....
PostPosted: Wed May 15, 2013 10:17 am 
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Joined: Mon Nov 01, 2004 3:13 pm
Posts: 638
Location: Netherlands
The thinnest rim tape you can find may help a bit.

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my plastic bikes, 29ers & stable of old steel


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