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Tire clearance problem with new bike

Old 07-26-15, 02:40 PM
  #26  
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Originally Posted by ThermionicScott View Post
Man, that's a bummer. Just when you thought bike manufacturers were starting to get more sensible about tire clearance...
+1
So many gimmicks and tight specs. Turns me off thinking about a new frame.
Nothing to be gained with such tight clearances.
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Old 07-26-15, 03:13 PM
  #27  
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That looks really tight. And tires can get slightly bigger after a few hundred miles as they stretch out.

It seems very strange that it's that tight. Even a 23c tire wouldn't be much smaller.

To protect the frame, perhaps a piece of that sturdy clear tape that used for protecting expensive car hoods from stones would work. But the tape would quickly wear through from grit. It probably needs something like a very thin stainless steel sheet--how would it be attached, and where would you find such a thing?

My Orbea fork and brake bridge had only a little more clearance than that when I ran 25c--maybe 3mm. The frame itself has about 6mm clearance.

I've gotten a few scratches on the inside of the fork top from tiny dirt and gravel bits picked up from the road. The frame was never scratched.

...

I think that many frames would have trouble fitting 28c, with not enough width between the chainstays. And the brake clearance might be really tight, too. Brake clearance also depends on exactly where the brake mounting hole is located on the frame. I moved the same brakes from an older frame to a new frame, and the clearance was much less on the the new frame.

But some new frames are designed for larger tires. For instance, the (expensive) Bianchi Infinito should handle 28c easily.
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Old 07-26-15, 07:21 PM
  #28  
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I say "design flaw" for a road bike not to have room for 25mm tires.

You can mount your tire on a wheel and take it shopping with you to test bikes for clearance before buying.
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Old 07-26-15, 10:08 PM
  #29  
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I would return it. That is rediculous.
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Old 07-27-15, 07:39 AM
  #30  
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My gosh - it's a SPRINT bike, made for skinny tires, and aerodynamics...... are you sure you want a sprint bike?
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Old 07-27-15, 08:04 AM
  #31  
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Originally Posted by Wanderer View Post
My gosh - it's a SPRINT bike, made for skinny tires, and aerodynamics...... are you sure you want a sprint bike?
Not sure if serious? 25mm is the new 23mm, hence all the new wider rims designed to be more aerodynamic and better suited for 25mm tires... Even so, a 25mm restriction is pretty bad for a consumer grade bicycle. The Fenix is Ridley's endurance line anyways.
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Old 07-27-15, 08:26 AM
  #32  
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With a short wheelbase, and the rear tire tucked up almost inside the seat tube, I sure don't see any "endurance" geometry...... Like I said, a sprint bike, almost TT.
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Old 07-27-15, 08:28 AM
  #33  
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For goodness sakes! Road bikes are SUPPOSED to have skinny tires! 28's? 32's?! When ya start putting such wide tires on a road bike, it essentially becomes a cross bike- or at least an endurance bike. If one wants a cross bike, or endurance bike, etc. then buy that kiind of bike!

Now, the trend is towards fatter tires.....so everyone will be getting rid of their old bikes which don't take wider tires.... Then, next, the trend will swing back to narrow tires, and the bikes with extra clearance will look stupid with 20mm tires....so everyone will rush out and buy a new bike again. It's all marketing BS!

23mm is a very practical medium for comfort and performance. I'm 170 lbs now- and was 228 when I started riding. I've tried out 23's; 25's and 28's. I noticed virtually no difference in ride comfort between them all. The 28's were slower. No discernable difference whatsoever between 23's and 25's. Obsessing over 2mm's of rubber is RIDICULOUS!
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Old 09-26-16, 03:48 PM
  #34  
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I have the same issue with my Ridley Fenix. Purchased it brand new from Competitive Cyclist back in May of this year. I installed Reynolds Assault SLG clinchers and the Conti GP4000S II tires (700 X 25) and am seeing this clearance issue as well. Although, I don't believe mine is as severe as yours. What did your LBS say about this?
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Old 09-26-16, 04:31 PM
  #35  
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Originally Posted by lighthearted View Post
I just got home with my brand new Ridley Fenix! The bike looks and rides awesome! It's a little stiff, but I'm a big guy at 225lbs, and a little extra stiffness never hurt me anyway. I just swapped out the stock 25c tires (Conti Grandsport Race) for my current favorite tire (Conti GP 4000S II 25c) and I noticed that there is a problem with tire clearance. With the stock tires there was a few mm of clearance between the seat tube and the tire. Now, there is a little less than 1mm. I measured it. I double checked to make sure that the bead is set properly around the rim. It is. I thought that the stock tires looked a little small to be considered a "25c" tire. Anyway, I'm pretty bummed now. I don't feel that this is safe to ride with such little clearance. Does anyone else ride with such minimal tire clearance? I was really hoping to be able to go up to a 28c tire, but it looks like 25 is even pushing it. Funny thing is, I think I've seen pics of team riders riding this exact frame on the Paris Roubaix. Did they ride the cobblestones with 25c or smaller tires? I always thought the "Pave" bikes by definition were supposed to accept bigger tires. It's too bad. This bike is perfect for me in every other way. The guy at Performance Bike shop told me I had a 30 days "no buyer's remorse" return policy. I really hope I don't have to take him up on that.

There are other tires that run "truer" to spec that ride almost as good as those Conti's. Off the top of my head I think the Michelin Power series tends to run closer to spec. I'm pretty sure the Schwalbe One line is just the opposite, their 25's tend to look more like 28's when mounted.

Challenge Strada 25's fit my Moots when Schwalbe 25's did not, and would be another option. Clement Strada 25's as well might be worth checking out.

One other thing you might try at Performance before returning it is seeing if wider rimmed wheels make a difference.

The newer wheels with 21-24mm internal width as opposed to 17-19mm allow larger tires to spread out more and so they don't run as "high" hence you should get more clearance at the seat tube.

Can't tell what wheels those are on there but they might do a take off on those and replace them with wider "cyclocross" wheels and that might be just enough to give you the clearance you need there.
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Old 09-26-16, 04:32 PM
  #36  
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That's really tight... personally, I'd return the bike. Not being able to put my favorite brand and size of tire on it would be a deal breaker. But that's just me.
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Old 09-26-16, 04:45 PM
  #37  
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Originally Posted by ShortLegCyclist View Post
I'm pretty sure the Schwalbe One line is just the opposite, their 25's tend to look more like 28's when mounted.
A 28mm Schwalbe One measures 28mm on a 20mm rim, and 29mm on a 23mm rim.
(external rim measurement).
I have examples of both right now in my garage.

So I would be skeptical of the 25mm Schwalbe One measuring 28mm.
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Old 09-26-16, 04:57 PM
  #38  
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Originally Posted by lighthearted View Post
I just got home with my brand new Ridley Fenix! The bike looks and rides awesome! It's a little stiff, but I'm a big guy at 225lbs, and a little extra stiffness never hurt me anyway. I just swapped out the stock 25c tires (Conti Grandsport Race) for my current favorite tire (Conti GP 4000S II 25c) and I noticed that there is a problem with tire clearance.
Originally Posted by Wildwing View Post
I have the same issue with my Ridley Fenix. Purchased it brand new from Competitive Cyclist back in May of this year. I installed Reynolds Assault SLG clinchers and the Conti GP4000S II tires (700 X 25) and am seeing this clearance issue as well. Although, I don't believe mine is as severe as yours. What did your LBS say about this?
Did we jump a year? Followup from the OP might be nice, but I'm not holding my breath since the OP's posts seem to be few and infrequent.

Originally Posted by FBinNY View Post
I've ridden with zero clearance tires, but usually in the fork. I'd have no issue riding that bike, but I'd use a piece of muffler tape, or at lease electrical tape as a chafe patch on the back of the seat tube. The tire won't touch but it will carry adhered sand and fine stones and take the paint off the tube otherwise.
I'd probably use some clear packing tape to protect it. Someone suggested clear aircraft propeller tape in another post.

3M POLYURETHANE PROTECTIVE TAPE 8672 from Aircraft Spruce

I have yet to get some, but it sounds like good stuff.

The tire carcass may stretch some over time, but as it wears flat, it should also increase clearance.

Not all rims are created equal, so a wider or narrower rim may also improve tire clearance. Any chance you could just try a couple of different rims?
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Old 09-27-16, 07:59 AM
  #39  
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It's a road bike? Get a cross, adventure or other to fit the 30-40 mm tires.
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Old 09-27-16, 10:17 AM
  #40  
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"POPPED" Spoke = Un-rideable bike?

At 225# I would say that OP is solidly in "Clydesdale" territory.
Unfortunately "clydes" and broken spokes are not uncommon. A broken spoke not only causes a rim to go 'out of true' (as earlier respondent suggested, easily adjusted for by 'opening up' brake caliper to get you home) but also 'out of round' (not so easy to adjust for with minimum clearance frame).
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Old 09-27-16, 03:10 PM
  #41  
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For a 225 lb rider I would not get a road bike that would not fit 28mm tires. If an endurance bike 32mm minimum, and really recommend riding on 35mm. The required tire pressures too high at your weight when on skinny tires. So, I would recommend returning bike and getting another bike to enable the larger tires. My opinion.
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Old 09-28-16, 08:25 AM
  #42  
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Buys high performance bike, complains when he can't fit fat tires on it.

That's like buying a modern ferrari and complaining you can't put cushy 65mm (sidewall) whitewall tires on it.

Dear general public who buys bikes (and by that I mean mostly the men in their 40s). You don't need a carbon fiber race bike to do your once or twice a week rides on. Sure, go ahead, spend your money, but don't complain when you try (and fail) to make it more "comfortable." Race bikes aren't meant to be comfortable, they're meant to be fast.
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Old 09-28-16, 08:51 AM
  #43  
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Originally Posted by corrado33 View Post
Buys high performance bike, complains when he can't fit fat tires on it.

That's like buying a modern ferrari and complaining you can't put cushy 65mm (sidewall) whitewall tires on it.

Dear general public who buys bikes (and by that I mean mostly the men in their 40s). You don't need a carbon fiber race bike to do your once or twice a week rides on. Sure, go ahead, spend your money, but don't complain when you try (and fail) to make it more "comfortable." Race bikes aren't meant to be comfortable, they're meant to be fast.
Looks like someone still thinks rougher ride means faster.
Read part 4A & 4B: https://silca.cc/blogs/journal
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Old 09-28-16, 09:32 AM
  #44  
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Originally Posted by Shimagnolo View Post
Looks like someone still thinks rougher ride means faster.
Read part 4A & 4B: https://silca.cc/blogs/journal
Oh I'm perfectly aware of that "wider tires can be faster". There's no way in hell I'd ride anything less than a 23. However, I'm also perfectly aware that aerodynamics are a MUCH larger part of overall speed above 15 MPH. Aero bikes (and newer bikes pretending to be aero bikes for the sake of "marketing") will put the back tire as close to the seat tube as possible for a few reasons. 1: It's more aero. 2: It makes the handling of the bike a bit more snappier (shorter wheelbase). Therefore a more "aero" bike that has the rear tire closer to the seat tube will be faster than a similar bike with the rear tire a bit further from the seat tube. Aka the bike was build to go fast, not for comfort. My above comments still apply.

I also know that the specific tires in the OP tend to run tall and wide for a specific size. (Only because I also run those tires.)
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Old 09-28-16, 10:28 AM
  #45  
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Originally Posted by corrado33 View Post
Oh I'm perfectly aware of that "wider tires can be faster". There's no way in hell I'd ride anything less than a 23. However, I'm also perfectly aware that aerodynamics are a MUCH larger part of overall speed above 15 MPH. Aero bikes (and newer bikes pretending to be aero bikes for the sake of "marketing") will put the back tire as close to the seat tube as possible for a few reasons. 1: It's more aero. 2: It makes the handling of the bike a bit more snappier (shorter wheelbase). Therefore a more "aero" bike that has the rear tire closer to the seat tube will be faster than a similar bike with the rear tire a bit further from the seat tube. Aka the bike was build to go fast, not for comfort. My above comments still apply.

I also know that the specific tires in the OP tend to run tall and wide for a specific size. (Only because I also run those tires.)
The aerodynamics of the meat sack on the saddle FAR outweigh anything to do with the tires or seat tube.
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Old 09-28-16, 11:51 AM
  #46  
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good thing OP isn't interested in fenders
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Old 09-28-16, 03:32 PM
  #47  
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Originally Posted by ThermionicScott View Post
Man, that's a bummer. Just when you thought bike manufacturers were starting to get more sensible about tire clearance...
Yeah, I don't get it. I'm hopeful that in a few years every bike no matter how racy will be able to run at least 32s.
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Old 09-28-16, 04:07 PM
  #48  
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Originally Posted by Hiro11 View Post
Yeah, I don't get it. I'm hopeful that in a few years every bike no matter how racy will be able to run at least 32s.
You mean that Formula V cars should be equipped to haul plywood?

There's no reason that EVERY bike should meet your personal standard of what a bike should be. Bikes are purpose built so suit various needs and preferences and people are free to choose.

I don't get the objections of casual, utility and sport riders to bikes that are built for people with different needs.
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Old 09-28-16, 04:29 PM
  #49  
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Originally Posted by FBinNY View Post
You mean that Formula V cars should be equipped to haul plywood?
While relatively narrow, Formula V tires are much wider than 25mm
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Old 09-29-16, 08:27 AM
  #50  
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Originally Posted by FBinNY View Post
You mean that Formula V cars should be equipped to haul plywood?

There's no reason that EVERY bike should meet your personal standard of what a bike should be. Bikes are purpose built so suit various needs and preferences and people are free to choose.

I don't get the objections of casual, utility and sport riders to bikes that are built for people with different needs.
Yeah, that's exactly what I'm saying.

There's no downside at all to bikes that can fit wider tires. There are many upsides to bikes that can fit wider tires, even for racing. Some aero specific frames actual give more room around wheels so the idea that a frame with tight clearances is "more aero" is at best debatable. Also, many pros are already cramming 25-28 tires into their frames.

Regardless, the vast majority of cyclists don't race and would benefit from more tire clearance. Still, the majority of performance road bikes sold these days have very tight clearances.
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