How to shop for new wheels

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peter
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How to shop for new wheels

Postby peter » Fri Nov 10, 2017 1:11 am

If I want to swap the wheels, what specifications do I need to look out for? The current wheels are Shimano WH-R550 with 28 tyres.

I'm hoping to get wheels that can take 35 tyres, it seems there is enough clearance. The rear wheel has a 10-speed cassette if that matters.

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Last edited by peter on Fri Nov 10, 2017 10:16 am, edited 5 times in total.

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trailgumby
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Re: How to shop for new wheels

Postby trailgumby » Fri Nov 10, 2017 9:16 am

Photos not displaying. Permissions?

g-boaf
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Re: How to shop for new wheels

Postby g-boaf » Fri Nov 10, 2017 9:58 am

peter wrote:If I want to swap the wheels, what specifications do I need to look out for? The current wheels are Shimano WH-R550 with 28 tyres.

I'm hoping to get wheels that can take 35 tyres, it seems there is enough clearance. The rear wheel has a 10-speed cassette if that matters.

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Probably the sharing settings on the images aren't right. How come the need for up to 35 tyres?

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peter
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Re: How to shop for new wheels

Postby peter » Fri Nov 10, 2017 10:41 am

Sorry guys, hopefully fixed now (tested working in incognito mode). It's really weird, the photos are already in a publicly shared folder, but the links to the photos sometimes don't work unless I right click then open in new tab and use the link from the address bar of the new tab. It appears to be a deliberate effort to prevent hot linking.

Anyway, the main reason I want to change to wider tyres is to improve comfort and traction (in term grip and safety). I set out to look for a new bike with wider tyres, but quickly realised that anything with 105 running gears start at $2,500 (I'm already running on 105, so don't want to buy a new bike with inferior components).

Considering there's really nothing wrong with my current bike, except I want wider tyres, maybe it's more sensible to just change the wheels. Also I wanted a stronger wheel, I feel the 16/20 spokes setup is on the weak side for a 90kg rider, and they are a bit out of round and require tuning.

The frame appears to have enough clearance to accommodate wider wheels, I have to investigate amount of adjustment available on the V-brakes (Deore XT).

I am already feeling the challenge finding a set of suitable wheels, it seems anything that can take 35 tyres are disc wheels.

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P!N20
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Re: How to shop for new wheels

Postby P!N20 » Fri Nov 10, 2017 10:55 am

g-boaf wrote:How come the need for up to 35 tyres?


Gravel. On trend.

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Duck!
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Re: How to shop for new wheels

Postby Duck! » Fri Nov 10, 2017 11:07 am

Going on the clearances in those pics, I'd suggest 32mm is mote likely your maximum tyre size; you should have a minimum of 4mm all around the tyre.

Plenty of non-disc "hybrid" wheels that will do the job.
I had a thought, but it got run over as it crossed my mind.

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peter
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Re: How to shop for new wheels

Postby peter » Fri Nov 10, 2017 11:39 am

Duck! wrote:Plenty of non-disc "hybrid" wheels that will do the job.


It’s good to know options are out there. Somehow I can’t find any suitable ones from Chain Reaction, probably due to my lack of understanding in terminologies.

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SheikYerbouti
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Re: How to shop for new wheels

Postby SheikYerbouti » Fri Nov 10, 2017 12:51 pm

Wide tyres? Get wide rims. Many C17s (17mm internal width between the beads) are the minimum you should get for 28mm+ tyre width, and 19mm would be better. But these will obviously have wider outer edges which may affect fitting, require caliper adjustment, etc

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peter
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Re: How to shop for new wheels

Postby peter » Sat Nov 11, 2017 8:55 am

Took some measurement last night, the fork has a 50mm space, the downtube and chainstay both have 46mm of space. 35 tyres should be fine, I get that it may not be exactly 35mm, so slight uncertainty but have to try it out.

Now just need to find the wheels.

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peter
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Re: How to shop for new wheels

Postby peter » Sat Nov 11, 2017 9:59 am

So Chain Reaction has the Fulcrum Racing 3 reasonably priced, but I'm not quite sure the spec is right:

http://www.fulcrumwheels.com/en/wheels/ ... s/racing-3

Rim width is only 22.5mm (17mm inner), how can it fit tyres of up to 50mm?! If it is in indeed correct, then 32 or 35 is well within the spec. If that's the case, I think the R550 is already compatible.
Last edited by peter on Sat Nov 11, 2017 11:01 am, edited 1 time in total.

eeksll
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Re: How to shop for new wheels

Postby eeksll » Sat Nov 11, 2017 10:27 am

have you found this on your internet wanderings?

http://engineerstalk.mavic.com/en/the-r ... rim-width/

"section 4 safety" lists the rim width/tyre size combos.

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peter
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Re: How to shop for new wheels

Postby peter » Sat Nov 11, 2017 11:01 am

Thanks for that link, I will remove the tyre tonight to measure the rim width just to be sure.

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peter
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Re: How to shop for new wheels

Postby peter » Sat Nov 11, 2017 9:28 pm

Took the rear wheel off to fix the cassette, also took the tyre off to change the rotational direction to match the front, this provides the opportunity to the weight the wheel (just for fun) and to measure the rim width. Turns out the R550 has an inner width of 15mm, 21mm overall.

May go ahead ordering the Fulcrum Race 3 (17mm).

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peter
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Re: How to shop for new wheels

Postby peter » Sun Nov 12, 2017 1:33 am

No go, just realised that any tyres wider than 28 won't clear the front brake pads, will need to remove the pads or deflate the wheel.

Gee! Nearly pull the trigger on a set of Fulcrum Race 3s with Conti Gatorskin 32s.

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Re: How to shop for new wheels

Postby A_P » Sun Nov 12, 2017 1:36 pm

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peter
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Re: How to shop for new wheels

Postby peter » Sun Nov 12, 2017 4:54 pm

The clearance is 30mm between the brake pads with cable relaxed, that’s the maximum they can go.

Thinking about it that may not be an issue, because usually there are two reasons to remove the front wheel. 1) to repair, in such case the tyre is already deflated, 2) for transport, just take a track pump along.

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