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-   -   What is a good tire for a difficult rim? (https://www.bikeforums.net/classic-vintage/551342-what-good-tire-difficult-rim.html)

sjpitts 06-12-09 11:02 PM

What is a good tire for a difficult rim?
 
My Schwinn circuit came with Mavic hubs and Mavic MA-40 rims. I don't think either were original to the bike, both because that is not what the 87 catalog says, and the rims have a performance bike sticker on them.

The rims are very difficult to get tires on. I got some new Conti Ultra Sport 700x23 tires from a friend and tried to put them. I got the front on, but the rear was impossible.

I did some searching, and bought this nice little tool.


I was able to install the tire with the tool, but it still was not all the easy. I can put the Kenda Kontenders that came with the rims on, but again, not very easy. I got the Conti's on another rim without difficulty.

So I really think that these stupid rims are just difficult.

I was originally planning on selling those wheels, but now I think I may keep them. If so, I would like to get get some good, but not super expensive tires on those wheels. But I would also like something that is a little easier to get on an off the rims. It is not really feasible to carry around that tool.

Anybody have a suggestion?

Will a kelvar bead instead of a wire bead make a difference?

Jared

TheDL 06-12-09 11:05 PM

Foldable tires are usually easier; more expensive though.

I have also heard people say getting a new tire on a rim for the first time is the hardest.

Panthers007 06-13-09 01:03 AM

The VAR tire-tool does the same as the Kool Stop above, but they are available only one place in the USA. The VAR is lightweight and easily portable. But the link is long and likely will need cut & paste find it:

http://cgi.ebay.com/VAR-Super-Tyre-Tire-Tool-New_W0QQitemZ310141789105QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item4835e423b1&_trksid=p4 634.c0.m14.l1262&_trkparms=|301%3A0|293%3A1|294%3A30

Well worth it - and Al Hinklin is utterly trustworthy.

(EDIT - It works! Just click it!)

prettyshady 06-13-09 02:38 AM

Mavic MA-40 rims laced to Mavic hubs are on of my favourite wheel set ups. I have not had a tyre problem with them using three tyre levers.

Old Fat Guy 06-13-09 06:12 AM

They are a bit difficult, but not impossible. You need to use a tire lever.

I've used them with Conti GP4000's and Veloflex Pave's.

RobbieTunes 06-13-09 04:08 PM

I stay away from Hutchinsons for the same reason, hard to mount.
Generally, cheaper tires mount easier, in my experience.
However, some foldables I find harder to mount than beaded.

It's probably more so the rims. I find some Alex rims to be boogers.

John E 06-13-09 05:35 PM

In general, today's tires seem to be a tighter fit than in years past, perhaps because of the higher pressures. A large innertube will often make matters even worse, so I generally run 18-23mm innertubes with 28mm tires.

Old Fat Guy 06-13-09 05:50 PM

A little bit of dish soap or Windex on the rims can be helpful, too.

redxj 06-13-09 06:44 PM

It also could be your tires. Ultrasports are one of the tougher tires to mount. I haven't had any trouble getting continental GP4000 or Gatorskins on any Mavic Ma2, Ma3, Open pros, or MA40 I own or have owned in the past.

sjpitts 06-14-09 08:24 AM


Originally Posted by Old Fat Guy (Post 9094138)
They are a bit difficult, but not impossible. You need to use a tire lever.

I've used them with Conti GP4000's and Veloflex Pave's.

I spent at least an hour trying to install the tire. Never got close until I bought the tool. I would like to see someone do it with just a tire lever.

In fact, I took the wheel and tire to the local Performance Bike to ask them what they thought. After the guy tried to put it on, I told the guy the tire was for a schwinn circuit, and his next response was "schwinn used their own special tires". Seriously. That was their best answer.

Jared

tmoneygetpaid 06-14-09 09:39 AM


Originally Posted by redxj (Post 9096656)
It also could be your tires. Ultrasports are one of the tougher tires to mount. I haven't had any trouble getting continental GP4000 or Gatorskins on any Mavic Ma2, Ma3, Open pros, or MA40 I own or have owned in the past.

Really? I found ultra sports infinitely easier to mount than any of the vittorias, which I love.

The hardest mount I ever did was a set of vittoria randonneur cross tires on ma40 and open cd4 rims. I broke 6 plasic tire levers getting the set on and pinched 4 tubes. Then I remembered watching a friend at a shop inflate the tube just a bit to get it inside the tire, then deflating it all the way and mounting. Made it way easier.

SoreFeet 06-14-09 09:48 AM

23 will work on that rim but might be a little narrow. 25 is the minimum that I would run on a rim that width. Good luck. I've never had a problem mounting a continental tire. The last part of the tire will require some muscling but it will eventually pop on.

joe v 06-14-09 09:54 AM

Personally, I stay away from Ultrasports for a different reason : I found out they flat way too easily; a piercing LOOK is enough!:cry:

sjpitts 07-13-09 08:57 AM


Originally Posted by SoreFeet (Post 9098751)
23 will work on that rim but might be a little narrow. 25 is the minimum that I would run on a rim that width. Good luck. I've never had a problem mounting a continental tire. The last part of the tire will require some muscling but it will eventually pop on.

Sorry to resurrect an old thead, but I am still thinking of getting some tires for these rims. I will probably get some nicer tires. Maybe even Conti 4000's, put probably just a Conti Gatorskin with a kelvar bead.

I was going to do 23mm tires, but SoreFeet's comment made me nervous. I looked it up, and people seem to say that the MA40 rim has a outer width of 20mm, and an interior width of 14.5.

According to Sheldon Brown's little chart

http://sheldonbrown.com/tire-sizing.html

I should be able to run 23 tires on these rims.

But is it not preferred? Should just go with 25's instead?

Jared

Old Fat Guy 07-13-09 09:00 AM

You can run 23's with no issues.


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