Very interesting -- it is a change from other advice I've heard. But you've
got it exactly backward (and Schwalbe says the opposite: read more
carefully) about lower pressure on a narrow rim: you need higher pressures
on a narrower rim, all else equal.

I know that one big benefit of wide rims (as Schwalbe notes) is that they
give a fat tire more stability so that you can run it at lower pressures: I
run my 60 mm BAs as low as 12/16 on dirt on 45 mm rims with no adverse
consequences (I'm 175). I've even run them this low on pavement: apart from
a bit of bounce, no real problem. Flop in cornering is hugely reduced
compared to the same tire and pressure on a 25 mm rim.

Note though that a given pressure on a wider rim will feel "harder" than
the same pressure on a narrower rim, doubtless due to that same, better
sidewall support; this is my experience with the BAs and the 45 mm versus
25 mm rims.

On Tue, Dec 13, 2011 at 8:44 PM, Thomas Carstens <tjaycarst...@gmail.com>wrote:

>
>
> Thanks for the help!  Since yesterday I've discovered an interesting
> article on the Schwalbe tires web site.
> http://www.schwalbetires.com/tech_info/tire_dimensions#rim
> According to them, the European Tire and Rim Technical Organization
> Standards have changed due to a lot of experience with MTBs using
> narrow rim/wide tire combos with no negative consequences.  They have
> a chart which differs from others I've seen.  Also, they seem to
> suggest that, if anything, on a narrow rim wide tire setup the tire
> pressure should possibly be reduced.
> Tom
>
> --
> You received this message because you are subscribed to the Google Groups
> "RBW Owners Bunch" group.
> To post to this group, send email to rbw-owners-bunch@googlegroups.com.
> To unsubscribe from this group, send email to
> rbw-owners-bunch+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/rbw-owners-bunch?hl=en.
>
>


-- 
Patrick Moore
Albuquerque, NM
For professional resumes, contact
Patrick Moore, ACRW
http://resumespecialties.com/index.html

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
To unsubscribe from this group, send email to 
rbw-owners-bunch+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/rbw-owners-bunch?hl=en.

Reply via email to