Max 23mm tires on Giant Propel?

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Borgie
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Max 23mm tires on Giant Propel?

Postby Borgie » Wed Feb 04, 2015 21:06 pm

I'm thinking about buying a Giant Propel for this season. However, I read in the latest issue of Tour International that it's impossible to mount 25mm tires due to the lack of space under the break cables. Sounds strange to me, and might be a dealbreaker.

Can anyone confirm this?

Maglia Rosa

Re: Max 23mm tires on Giant Propel?

Postby Maglia Rosa » Wed Feb 04, 2015 21:52 pm

What do you want 25mm tyres for anyway? If its for the supposed better rolling speeds thats still debatable.

If its for extra comfort then the Propel is not the bike for you.

DKay
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Re: Max 23mm tires on Giant Propel?

Postby DKay » Wed Feb 04, 2015 22:01 pm

Maglia Rosa wrote:If its for extra comfort then the Propel is not the bike for you.


So are you saying that if your bike rides a bit stiff, then you're not allowed to fit larger tyres for a bit more comfort and have to just put up with it? Sounds a bit daft to me. :?

Maglia Rosa

Re: Max 23mm tires on Giant Propel?

Postby Maglia Rosa » Wed Feb 04, 2015 22:05 pm

Its a bike designed for flat out straight line speed. Not comfort. Look at the defy if thats what you are after.

DKay
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Re: Max 23mm tires on Giant Propel?

Postby DKay » Wed Feb 04, 2015 22:19 pm

It's not a TT bike and it's quite likely the OP isn't a competing world tour level rider, where every single aero advantage matters. What real world decrease do you think it will make to a riders average speed by running 25mm tyres? Ignoring the lower rolling resistance of larger tyres, the extra comfort alone is worth a lot more than saving 2watts of drag at 25mph.

I like to run 25mm Pro4s on my Foil. Doesn't seem to slow me down at all and even if it did slow me down by 0.25mph, I'd still take them over 23s for the better ride quality.

Maglia Rosa

Re: Max 23mm tires on Giant Propel?

Postby Maglia Rosa » Wed Feb 04, 2015 22:26 pm

DKay wrote:It's not a TT bike and it's quite likely the OP isn't a competing world tour level rider, where every single aero advantage matters. What real world decrease do you think it will make to a riders average speed by running 25mm tyres? Ignoring the lower rolling resistance of larger tyres, the extra comfort alone is worth a lot more than saving 2watts of drag at 25mph.

I like to run 25mm Pro4s on my Foil. Doesn't seem to slow me down at all and even if it did slow me down by 0.25mph, I'd still take them over 23s for the better ride quality.


well if the bike cant take 25mm thats Giants decision. Not mine. The bike is an aero design and its nit uncommon for 25mm tyres not to fit. Sure the op is not a TT'er or a world circuit rider but the bike geometry is geared towards those that maybe want to be or pretend to be. Its not a comfort bike nor is it a traditional road geometry its designed to be aero. For speed. Geddit? If it dont take 25mm then move on and stop pretending its something its not.

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FransJacques
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Re: Max 23mm tires on Giant Propel?

Postby FransJacques » Wed Feb 04, 2015 22:27 pm

Agree Molly Rosy, this 25-28mm thang is very magazine/website led and very recent. I cycled for 1/2 of the 80s, all the 90s and most of the 2000s on 23c Michelin Hi-Lite Pros or Continental Grand Prix and suffered no ill effects. For example I still had kids, my little swimmers weren't shaken & stirred to death.

Also, as someone else pointed out on another occasion, if you go to a bike shop in Spain, Germany, Italy, France etc. good luck actually finding anything but a 23c tyre anyway.
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thegreatdivide
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Re: Max 23mm tires on Giant Propel?

Postby thegreatdivide » Wed Feb 04, 2015 22:29 pm

The Propel will take 25mm tyres. Giant Shimano run 25mm Vittoria Corsa SC's on their bikes, so you'll be fine.

http://roadcyclinguk.com/gear/pro-bike- ... mOZaJZx.97

For what it's worth, I jumped on the 25mm fad for a summer a few years back and I couldn't tell the difference between them and a 23mm. Not one single bit.

Anyway, the OP can run 25's on the Propel, so thread closed.
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DKay
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Re: Max 23mm tires on Giant Propel?

Postby DKay » Wed Feb 04, 2015 22:31 pm

Maglia Rosa wrote:well if the bike cant take 25mm thats Giants decision. Not mine. The bike is an aero design and its nit uncommon for 25mm tyres not to fit. Sure the op is not a TT'er or a world circuit rider but the bike geometry is geared towards those that maybe want to be or pretend to be. Its not a comfort bike nor is it a traditional road geometry its designed to be aero. For speed. Geddit? If it dont take 25mm then move on and stop pretending its something its not.


Well I suppose Marcel Kittel should stop pretending that his Giant Propel is something that it's not then?

http://road.cc/content/news/122669-tour ... dvanced-sl

Maglia Rosa

Re: Max 23mm tires on Giant Propel?

Postby Maglia Rosa » Wed Feb 04, 2015 22:33 pm

Not wanting to stir up more but a 25mm tubular may fit fine but a clincher may not. Just choose your tyres carefully. Some can be bigger than others.

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mfin
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Re: Max 23mm tires on Giant Propel?

Postby mfin » Wed Feb 04, 2015 23:05 pm

Maglia Rosa wrote:Not wanting to stir up more but a 25mm tubular may fit fine but a clincher may not. Just choose your tyres carefully. Some can be bigger than others.


Yep, and it depends what rims a tyre is mounted to.

Increased height of the tyre profile as well as the width can create a 'no go'.

I also agree with some of the other posters above, that this need for 25mm tyres seems to be a bit of a jump on the bandwagon thing.

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DeVlaeminck
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Re: Max 23mm tires on Giant Propel?

Postby DeVlaeminck » Wed Feb 04, 2015 23:24 pm

Agree it will depend on the rim as well as the tyre - I've got some Pro4 25mm (generally accepted that these are wider than 25mm) which will not fit under the rear caliper on one set of wheels but are ok (just) on another on my old race bike.
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tcrnick
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Re: Max 23mm tires on Giant Propel?

Postby tcrnick » Thu Feb 05, 2015 04:01 am

On my 2015 Propel sl0, I currently have 25mm Vittoria Corsa (clincher) running on the rear zipp 404 and when rear brake is in use, the brake cable is almost touching the tyre.
The bikes that Giant Alpecin are using the Fourier brakes which provide greater clearance.

Borgie
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Re: Max 23mm tires on Giant Propel?

Postby Borgie » Thu Feb 05, 2015 06:39 am

Maglia Rosa wrote:What do you want 25mm tyres for anyway? If its for the supposed better rolling speeds thats still debatable.


It's not so much the extra width of the tires that's important to me but rather the question of what tire/rim combination will work. Many rims today are about 23-25mm wide. Will a 23mm tire on a 23mm rim fit? What about a 23mm tire on a 25mm rim?

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jordan_217
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Re: Max 23mm tires on Giant Propel?

Postby jordan_217 » Thu Feb 05, 2015 07:16 am

Maglia Rosa wrote:Not wanting to stir up more but a 25mm tubular may fit fine but a clincher may not. Just choose your tyres carefully. Some can be bigger than others.


+1. IME the 25mm Michelin Pro 4 SC's come up big (height and width). I've found Conti tyres to always be a little just below or spot on their described dimensions.

Why not try some 23mm Michelin Pro's? - they come up just over 24mm on my wheels.
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Keezx
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Re: Max 23mm tires on Giant Propel?

Postby Keezx » Thu Feb 05, 2015 09:11 am

Borgie wrote:
Maglia Rosa wrote:What do you want 25mm tyres for anyway? If its for the supposed better rolling speeds thats still debatable.


It's not so much the extra width of the tires that's important to me but rather the question of what tire/rim combination will work. Many rims today are about 23-25mm wide. Will a 23mm tire on a 23mm rim fit? What about a 23mm tire on a 25mm rim?


The outside width does not matter, it's the inside width that counts.
23 Mm tyres run perfect on 17-18C rims, 19 C is possible but these are made for 25 and more.
I don't care about rolling resistance, but roadholding is significant better at lower pressures made possible by the wider rims.

Keezx
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Re: Max 23mm tires on Giant Propel?

Postby Keezx » Thu Feb 05, 2015 09:15 am

thegreatdivide wrote:
For what it's worth, I jumped on the 25mm fad for a summer a few years back and I couldn't tell the difference between them and a 23mm. Not one single bit.



At the same pressure, the 25 's are worse for comfort and roadholding.
Anyway,there isn't much difference between 23 and 25 ....

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jordan_217
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Re: Max 23mm tires on Giant Propel?

Postby jordan_217 » Thu Feb 05, 2015 09:30 am

Keezx wrote:
thegreatdivide wrote:
For what it's worth, I jumped on the 25mm fad for a summer a few years back and I couldn't tell the difference between them and a 23mm. Not one single bit.



At the same pressure, the 25 's are worse for comfort and roadholding.
Anyway,there isn't much difference between 23 and 25 ....


Which is it? :lol:
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Markwb79
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Re: Max 23mm tires on Giant Propel?

Postby Markwb79 » Thu Feb 05, 2015 09:31 am

Well I hope they fit 25mm tyres. I just bought my propel and I only run 25mm tyres.

As said above, the Giant team run 25mm tyres, so dont see it being an issue.
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Borgie
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Re: Max 23mm tires on Giant Propel?

Postby Borgie » Thu Feb 05, 2015 09:59 am

Markwb79 wrote:Well I hope they fit 25mm tyres. I just bought my propel and I only run 25mm tyres.

As said above, the Giant team run 25mm tyres, so dont see it being an issue.


But they use the Fourier brakes, which are different from the SpeedControl SL brakes.


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