35 mm tyre in an MA2 rim

General cycling advice ( NOT technical ! )
Post Reply
Barrowman
Posts: 441
Joined: 8 Jan 2022, 6:35pm

35 mm tyre in an MA2 rim

Post by Barrowman »

Would a 35 mm tyre work on a Mavic MA2 rim?
Clearance not an issue ( Trike Rear)
De Sisti
Posts: 1507
Joined: 17 Jun 2007, 6:03pm

Re: 35 mm tyre in an MA2 rim

Post by De Sisti »

Which brand of tyre do you have?
PT1029
Posts: 1742
Joined: 16 Apr 2012, 9:20pm

Re: 35 mm tyre in an MA2 rim

Post by PT1029 »

I'd say a 35mm tyre on a MA2 rim would be too wide for the rim/give the tyre a hard time where it contacts the rim.
This would be compounded by the fact on a rear trike wheel the tyre would get a lot of sideways rolling stress when cornering.
Years ago there was a review of a recumbent (I forget the magazine and the recumbent). It had 2 front wheels and used Moulton tyres (and I guess rims as well). There was a photo of it cornering, showing the sideways force on one of the front tyres. Rather than being a "omega" shape like tyres tend to be, the tyre was more a quoate/upside down comma shape.
The photo caption was "Note the stress on Dr Moulton's tyre".
A more modern rim might give an easier tyre fit, my memory is that MA2/MA3 rims had fairly shallow internal wells, making tyres a hard fit - reminded by fitting a tyre on an MA3 rim the other week, which in turn reminded me of how lovely the polished anodized finish is on these rims.
User avatar
cycleruk
Posts: 6060
Joined: 17 Jan 2009, 9:30pm
Location: Lancashire

Re: 35 mm tyre in an MA2 rim

Post by cycleruk »

I used to run 28s on MA2 with no problems. Not sure if that is of any help though ?
As PT notes they are a fairly shallow rim and tyres where harder to fit.
You'll never know if you don't try it.
Jamesh
Posts: 2963
Joined: 2 Jan 2017, 5:56pm

Re: 35 mm tyre in an MA2 rim

Post by Jamesh »

I run the on narrow Alex race 28 no problem how wide are ma2 rims??
tim-b
Posts: 2085
Joined: 10 Oct 2009, 8:20am

Re: 35 mm tyre in an MA2 rim

Post by tim-b »

It's going to need some measuring:
Take the inner rim width as shown on the diagram here https://www.schwalbe.com/en/reifenmasse >> Which tire (sic) fits which rim?
Feed it into the ETRTO tyre/rim chart and see if your tyre is in range (read the notes on pressures, rim styles, hookless, etc)
~~~~¯\(ツ)/¯~~~~
rogerzilla
Posts: 2876
Joined: 9 Jun 2008, 8:06pm

Re: 35 mm tyre in an MA2 rim

Post by rogerzilla »

viewtopic.php?t=89609

Looks like the external width is 20mm. I'd stay under 30mm for tyre width.
User avatar
gaz
Posts: 14640
Joined: 9 Mar 2007, 12:09pm
Location: Kent

Re: 35 mm tyre in an MA2 rim

Post by gaz »

BITD when first getting into day rides rather than loaded touring, I rode 32s on MA2.

I didn't enjoy it and settled on Mod4 shod with 32s or 35s instead.
High on a cocktail of flossy teacakes and marmalade
KM2
Posts: 1318
Joined: 23 Oct 2008, 5:38pm

Re: 35 mm tyre in an MA2 rim

Post by KM2 »

I remember mountain bikers using reconfigured Ma40’s (posh Ma2’s) supposedly giving more comfort because of the bulging side wall that happens. How it went??????
User avatar
Chris Jeggo
Posts: 571
Joined: 3 Jul 2010, 9:44am
Location: Woking, Surrey

Re: 35 mm tyre in an MA2 rim

Post by Chris Jeggo »

I kept a copy of CJ's CTC webpage on tyre sizes. He recommended a maximum tyre width ot 2.2 times rim inner width. So if your rim inner width is 13.5mm (the MA2 width I found on the internet) then the max tyre width is 30mm. (A nominal 32 might be a true 30, of course.)
Barrowman
Posts: 441
Joined: 8 Jan 2022, 6:35pm

Re: 35 mm tyre in an MA2 rim

Post by Barrowman »

Thanks for all the input ladies and gents. :D
peetee
Posts: 4287
Joined: 4 May 2010, 10:20pm
Location: Upon a lumpy, scarred granite massif.

Re: 35 mm tyre in an MA2 rim

Post by peetee »

KM2 wrote: 21 Aug 2022, 1:52pm I remember mountain bikers using reconfigured Ma40’s (posh Ma2’s) supposedly giving more comfort because of the bulging side wall that happens. How it went??????
Never used MA40’s for an MTB but mine has 23mm Mavic rims and 50mm tyres. This is just about the 2.2x mentioned above. I have never experienced any handling problems but the bulge makes cantilever brake set-up a real chore. Because of this I converted to parallel push hydraulic rim brakes years ago.
The older I get the more I’m inclined to act my shoe size, not my age.
Post Reply