cannondale86

I just got my first road bike, this Cannondale Advanced with the CAAD 3 frame. It has 700x23c tires but was told I should look at getting some 25 or 28's... Will 28's tires even fit on here or should I go with 25's?








Thanks a lot for your time

coasting 

are the 23s giving you problems? if not what is the reason for changing them?

cannondale86

I haven't ridden the bike too much yet. It looks like they need to be replaced soon though. A couple people on a Cannondale forum said 25 or 28s will improve the ride because the cad 3 is a stiffer frame. I just want to get a strong tire that will be less prone to flats. Suggestions?

jon c. 

The wider tires will definitely smooth the ride a bit.

hamster

Most likely they will, but it's hard to be sure without knowing what rims you have. They look like Mavic but I can't make out the model name in these pictures.

10 Wheels

I just received some of these.
They appear to be thick and have flat protection.

Continental SUPER Sport (Plus) 700 X 23's

https://www.outsideoutfitters.com/pm-...00c-tires.aspx

The SuperSport Plus tires feature Continental's PLUS breaker belt for superior puncture protection, extra thick casing for sidewall durability and added tread material for long life. The tread pattern is the same as the venerable Grand Prix. Extremely puncture proof with the PLUS breaker belt

cannondale86

Here you go. I took a pic

hamster

That's a 622x15 rim and it should accommodate tires from 700x23 to 700x32

https://sheldonbrown.com/tire-sizing.html

cannondale86

Would I have to worry about a 25 or 28mm tire hitting the seat tube?

cannondale86

That looks like a nice deal. Thank you for that

jon c. 

25 should be fine. You can get problems with 28s on some frames.

coasting 

I think 25 willbe ok and likely 28. I've heard of problems for frames designed to be very aerodynamic but these are very expensive frames. For a regular bike tyres shouldn't hit the frame.

big john

If that's where you're running the seat then your comfort has less to do with tire size and more to do with the fact that the bike is way too big. A much shorter handlebar stem might help.
Yes, those are stiff frames but try using a little less air pressure in the tires you have and see if it's good enough, maybe 90psi depending on your weight.
I doubt 28s will fit.

Psimet2001 

+1

cyclezen

+2

i'd find a more appropriate bike/frame size before worrying about tires...

sorry to bum you out , but you'll enjoy road cycling a lot more on a bike which will fit better...

23/25/28 - a lot depends on the tire... there are always compromises to be made - ride quality, durability, speed - some of which depends on the cost.
lotta info on other threads here...

ride what you have and maybe start looking for another bike... maybe use competitivecyclist.com 'Fit Calculator' to help you start searching for a good size...
a search will produce way too much about fit on BF...

Juan Foote

Just as a friendly suggestion based on what I think I see in the wheel pic....move your sensor and your magnet "up" towards the center of the wheel more. Having the magnet that far out on the wheel will cause a discernible wheel hop (out of balance tire) at speed that can be remedied by moving the weight towards the hub.

Good luck with the rest, and hope you enjoy your new bike.

StanSeven

Stick with 25s. Those should be fine for ride comfort as long as you don't over-inflate. 28's will feel sluggish on the road.

cannondale86

I am 6' tall. I think its the right frame. I am still unsure as to where that seat post should be for me. I have to make adjustments before I take her out.

I am sorry I don't know what you mean by magnet/sensor. Do you mean for the speed computer gadget? It was all hooked up when I got the bike but the computer was missing so I removed all the wiring.. At least I think I did. Yes I am quite new you can tell

Juan Foote

You should have about 30-35* knee flexion at the bottom of the pedal stroke with the ball of your foot (big toe socket) over the pedal axle. There are quite a few resources online (as well as theories on fit) that can help you get the positioning right, or at least close.



Well, if the computer is gone, take off the magnet as it's not doing anything for you any more.

cyclezen

WOAH! Ok, do adjust that seat... there are enough threads on BF, covering 'fit' to confuse all of us...

there's a good tire thread right now, covering BF opinions... 23, 25, really depends on the tire and rider, pick a price range and give something a try

rowebr

Possibly, but from your pics I am guessing that a 25mm tire will be fine at the seat tube. Not sure about the 28. The other areas on your bike that the tire's outside diameter will need to clear are the undersides of the fork crown and rear brake bridge (or the brake calipers in those places, whichever is lower). Also, the tire will need to fit between the chainstays, but you haven't posted a pic of that area yet.


I do think you will enjoy the ride of a good 28mm tire compared to a good 23mm. Even a 25mm will be an improvement over the 23. It is a bit difficult to measure everything in advance of purchase, but 28mm is such a common size that you should be able to find a tire to borrow in order to check the fit. Mount it on each rim, inflate, and then you'll have a very good idea of whether its going to work.