Contemporary wheel design

[RocknRolla]

I just can't keep up with all the stuff that'll make me 'faster' demmit   - that's why I'm so slow, well that's my story and I'm sticking to it 

 

Due to my spending habits I basically have no hope....

[nick_the_wheelbuilder]

You mean almost something exactly exactly like this https://www.bikehub.co.za/classifieds/184234-new-custom-built-hopespank-set/

Something like that yes!

[Capricorn]

Anyone riding ENVE HV rims (30mm) or the normal M70/90 (25mm) and I'm pretty sure almost all of them are on 25mm plus internal width rims... "wider" in this case is 25mm plus. 

M90 not 25mm+. just 25mm. So by your definition, its not wider.

Also,whats too wide? At which point does the tyre profile change resulting in loss of traction at normal lean angles, and/or increases in rolling resistance?

[usxorf]

In my opinion, 25-30mm will work with most tires, 35+mm needs wiser tire choice.

 

Source: Just built 35mm WTB asym and mounted my conti 2.4 MK II. Sidewalls are wider than the knobs (just barely, but ja). Probably gonna try and source 2.5 minion WT or something else after I shred the MK sidewalls.

[popcorn_skollie]

M90 not 25mm+. just 25mm. So by your definition, its not wider.

Also,whats too wide? At which point does the tyre profile change resulting in loss of traction at normal lean angles, and/or increases in rolling resistance?

 

You'll get different answers for this depending on who you ask. Enve aren't sold on wider is necessarily better. Ibis on the other hand preach it as gospel...

I was surprised to see mr minns hoops at fort bill too, and he did win.

I'm not saying its the rims. But I like wider rims...

[Capricorn]

You'll get different answers for this depending on who you ask. Enve aren't sold on wider is necessarily better. Ibis on the other hand preach it as gospel...

I was surprised to see mr minns hoops at fort bill too, and he did win.

I'm not saying its the rims. But I like wider rims...

 

he ditched the wider rim experiment because he flatted in qualifiying, and went back to the rim he has been riding with previously, the bog standard M90. That's what he won on.

 

There are clear benefits, just wondering where the limit is, if there is one that is.

[Captain Fastbastard Mayhem]

M90 not 25mm+. just 25mm. So by your definition, its not wider.

Also,whats too wide? At which point does the tyre profile change resulting in loss of traction at normal lean angles, and/or increases in rolling resistance?

I include 25mm in the "wider" definition (25mm plus includes 25mm)

 

But maybe it was worded badly... 

 

As for the latter - Don't know. Depends on the tyre... Some say that a Shorty gets too squared off, but the Minion works well. Hans Dampf I know works well on super wide rims... 

[popcorn_skollie]

he ditched the wider rim experiment because he flatted in qualifiying, and went back to the rim he has been riding with previously, the bog standard M90. That's what he won on.

 

There are clear benefits, just wondering where the limit is, if there is one that is.

 

Didn't know that. Anyways, I don't think there is a straight answer. It will probably boil down to specific rim and tyre combos. One manufactures R&D will say something different to the nexts. Of course at some point it gets silly. Where that point is depends on who you ask.

[Dieter ( ͡° ͜ʖ ͡°)]

http://forums.mtbr.com/wheels-tires/wide-rims-dont-believe-hype-900712.html

 

This thread is also full of opinions both ways... 

[Captain Fastbastard Mayhem]

he ditched the wider rim experiment because he flatted in qualifiying, and went back to the rim he has been riding with previously, the bog standard M90. That's what he won on.

 

There are clear benefits, just wondering where the limit is, if there is one that is.

Agreed. Especially at the pointy end.

 

Did he go back to the normal or the HV?

 

I have to wonder just how a squareish tyre like the Mary or Ibex would do on a 35mm rim

[Capricorn]

its not about the brand of tyre, rather the tyre width. Mavic has a table showing what they believe should be size matching between rim internal widths and tyre widths.

Harping on about wide rims without mentioning appropriate tyre widths is, according to mavic, pointless.

 

Anyone with published info offering balanced perspectives, post up.

[Capricorn]

Agreed. Especially at the pointy end.

 

Did he go back to the normal or the HV?

 

I have to wonder just how a squareish tyre like the Mary or Ibex would do on a 35mm rim

The M90 is the M90. If anyone bothered to check Enve's website, HV is reserved for sub-classification of M60 and M70 product lines.

 

worth noting something enve's research noted (which is inline with what Mavic says about appropriate tyre width

 

 

According to ENVE, they found that at a certain point the benefits of a wider rim began to diminish (at least when using tires smaller than 2.5"), with the expanded tire casing profile becoming more prone to punctures, whether due to pinch flats or sidewall tears, which is how they settled on the 31mm internal dimensions of the M70 HV.

[NotSoBigBen]

julle manne maak my nou so deurmekaar soos 'n verkleurmannetjie in 'n smartie boks 

[Dieter ( ͡° ͜ʖ ͡°)]

its not about the brand of tyre, rather the tyre width. Mavic has a table showing what they believe should be size matching between rim internal widths and tyre widths.

Harping on about wide rims without mentioning appropriate tyre widths is, according to mavic, pointless.

 

Anyone with published info offering balanced perspectives, post up.

They are still  following ETRTO standards? There are some manufactures that believe the standards should be revisited for MTB wheels in particular.  

[Capricorn]

They are still  following ETRTO standards? There are some manufactures that believe the standards should be revisited for MTB wheels in particular.  

 

I think evolution of existing standards is a natural thing, so that aspect of it being revisited is baked into their 'mandate', as evidenced from this bit quoted from the ETRTO website:

 

 

E.T.R.T.O.  Standards are  specifications  of international interest,  including future developments,  approved in accordance with the Organisation's Constitution and Rules of Procedure. Although not exclusive, they are based on sound knowledge and experience and will enable users to obtain good services from their tyres/rims/valves, but as they give only general advice, they cannot take into account special conditions of use and every different type of vehicle.

 

[Capricorn]

julle manne maak my nou so deurmekaar soos 'n verkleurmannetjie in 'n smartie boks 

 

if I could offer a bit of a summary, it would be that wider is better, up to a point. Also, wider rims need appropriately wider tyres.

 

If you have any doubts prior to purchase, and the internet offers too much fanboism, just ask the knowledgeable ppl, aka your rim manufacturer what width tyre they recommend.