marathon plus size

[musicbooks]

Hi Folks,
It's been a while. I came off my bike a few months ago and broke three ribs. The Agattu was fine (unlike me ) despite a heavy clatter. I had it checked out and serviced and it seems to be considerably stronger than my bones.

I've just got myself back in the saddle again and after a couple of weeks on the road, I've picked up a puncture. I'm about to buy marathon plus tyres but I'm confused about what size to buy. I have an Agattu 49cm and i think the wheel size is 28" but I can't find the measurement on the tyre.There's also some confusion about size choices on retailer's website.

I'd appreciate some advice.

BW
musicbooks
By the way, the pain of broken ribs (almost put me off cycling for life, but my Agattu wooed me back!

 

[NRG]

Ouch! Sorry to hear about your accident but glad you're on the road to recovery

There should be some sort of size markings on the tyre wall, if is a 28" wheel then it may be indicated as 622 or 700c

Take a look at the Schwalbe web site, here's the link to the Marathon Plus Tour tires:

Schwalbe - Professional Bikes Tires

The standard Marathon Plus tyros have many more sizes to choose from:

Schwalbe - Professional Bikes Tires

 

[tillson]

Hi Musicbooks. Sorry to hear about the accident and hope there's no lasting damage to you or the bike.

I have a feeling that I have read that the small framed Agattu has a smaller wheel than the the rest of the range, so probably not 28" / 622 / 700c. It might be worth checking before ordering, although I'm sure that someone with more knowledge than me will be along to provide the definitive answer.

 

[LafRo]

On your tire should be printed a size like:

37-622, 40-622 , 42-622 where:

the first number is the width of the tire in mm
the second number is the diameter of the tire

these are ETRTO size measures which are used on almost every tire these days

There are sometimes French? sizes like
700-35C, 700-32C which indicate diameter-width
or inch sizes like
28 x 1 5/8 x 1 3/8 which indicate diameter x width x hight

 

[iaing]

Hi Musicbooks. Sorry to hear about the accident and hope there's no lasting damage to you or the bike.

I have a feeling that I have read that the small framed Agattu has a smaller wheel than the the rest of the range, so probably not 28" / 622 / 700c. It might be worth checking before ordering, although I'm sure that someone with more knowledge than me will be along to provide the definitive answer.

Hello

I have the 49cm Tasman myself & it has the usual 28" wheel, it is only the XS size that has smaller wheels.

700 x 38C Marathon Plus tyres (as recommended to me earlier on this forum) are correct. Just a pain to fit.

Iain

 

[musicbooks]

Thanks Guys,
Finally located the numbers on the side of the tyre ( through layers of dirt and grime!)
28.1.6
42-622
I've had a look on the schwalbe site and various retailers but I still can't find a match. There doesn't seem to be a comparable size other than in the "tour" range here
Schwalbe - Professional Bike Tires - MTB
But when I look on retailers websites, I can't find any 700x40C listed .. all very confusing. ( perhaps I broke more than a few ribs )

BW
musicbooks

 

[LafRo]

This one should fit:

Marathon Plus Tour 42-622

Schwalbe - Professional Bike Tires - Tour/City

Or this one:

Marathon Plus 40-622

Schwalbe - Professional Bike Tires - Tour/City

It is in Dutch

 

[flecc]

Thanks Guys,
Finally located the numbers on the side of the tyre ( through layers of dirt and grime!)
28.1.6
42-622

To explain, the first size above is in inches with the 28" representing a nominal outside diameter, the 1.6" the tyre width. Imperial method

The second above is in millimetres, the 622 mm representing the rim diameter, the 42 mm the tyre width. Continental method.

Either of the tyres that LaFro shows above is fine.

There is no "All Round" Marathon Plus size absolutely right for your bike, the nearest in this type being the 700 x 38c, the 700 being millimetres and an alternative nominal tyre outside diameter, the 38 being millimetres of tyre width. This measurement method is most commonly used in connection with the drop handlebar sporting crowd. This 38 size would fit ok but be a bit less comfortable to ride.
.

 

[NRG]

Thanks Guys,
Finally located the numbers on the side of the tyre ( through layers of dirt and grime!)
28.1.6
42-622
I've had a look on the schwalbe site and various retailers but I still can't find a match. There doesn't seem to be a comparable size other than in the "tour" range here
Schwalbe - Professional Bike Tires - MTB
But when I look on retailers websites, I can't find any 700x40C listed .. all very confusing. ( perhaps I broke more than a few ribs )

BW
musicbooks

I hope not!

Here you go, 5 seconds on Google, the last size 28 x 1.60....the sizes are in the links I posted earlier.....

Schwalbe Marathon Plus Tour Tyre

 

[musicbooks]

Thanks again,
I think my confusion is partly down to the choice between Marathon Plus ( as recommended by many on Pedelecs) which doesn't seem to have a compatible size for the 49cm Agattu and Marathon Plus Tour which does and I'm not sure what the difference is between the two tyres.

Or have I missed something again??

BW
musicbooks

 

[NRG]

The tread pattern is different, the MP+ tyre would be: 40-622 aka 28 x 1.50 aka 700 x 38C..... See Lafro's post above....

 

[flecc]

The Marathon Plus Tour 42 x 622 performs the same function as the ordinary MP, just with slightly deeper tread. The gain is slightly more grip on indifferent surfaces, the loss a fraction more rolling resistance, but both differences small and not noticeable on a e-assisted bike.

The Tour-City version reduces the gain/loss amounts mentioned on the Tour. Again though, the differences are very small and much depends on personal impressions of the appearance of each tread.

I'd say decide on the price/availability between those two for which to buy.
.

 

[musicbooks]

Thanks again to everyone for all the info,
I followed your advice Flecc, went for the cheapest and have now ordered a set of Marathon Plus Tour tyres.

All I have to do now is fit the bloody things
BW
musicbooks

 

[trickletreat]

Have a look at the link in my op
http://www.pedelecs.co.uk/forum/electric-bicycles/6270-fitting-marathon-method.html?highlight=fitting+marathon+plus

Once you learn how to do it, even changing the tyre on a rear hub wheel is not a problem.

 

[tillson]

Is there something I am missing regarding fitting MP tyres? Mine went straight on just using my hands. They were no different to standard bike tyres to fit. I little more rigid, perhaps, but certainly just as easy to fit.

 

[jbond]

I had no real problems fitting M+Tours. The only niggle was trying to get the bead to seat evenly in the rim. Actually gettng them on the rim was easy or at least no harder than usual. On the Aurora rear hub, I just removed the brake caliper and the old tyre and tube, then lifted the wheel just enough to slide them past the axle on the non-gear side. Then slot the new tyre and tube past the axle and finally get the tube on the rim with the wheel in situ. That was all with the bike upside down on the bars and seat (obviously! ).

 

[flecc]

Is there something I am missing regarding fitting MP tyres? Mine went straight on just using my hands. They were no different to standard bike tyres to fit. I little more rigid, perhaps, but certainly just as easy to fit.

Certain pairings of rims and tyre sizes are more difficult than others due to small diameter variations. Thus some pairings can need tyre levers to persuade one onto t'other. There are also variations in the centre area depth of rims, some of which give less gain from pinching in the tyre to the centre as the tyre is persuaded on.

These are exacerbated with the Marathon Plus tyres since the carcase is more rigid due to the incorporated thick protection layer.
.

 

[tillson]

Certain pairings of rims and tyre sizes are more difficult than others due to small diameter variations. Thus some pairings can need tyre levers to persuade one onto t'other. There are also variations in the centre area depth of rims, some of which give less gain from pinching in the tyre to the centre as the tyre is persuaded on.

These are exacerbated with the Marathon Plus tyres since the carcase is more rigid due to the incorporated thick protection layer.
.

That makes sense.

I must have been lucky and had a set of rims at the lower limit of manufacture tolerance, and tyres at the upper limit.

 

[flecc]

That makes sense.

I must have been lucky and had a set of rims at the lower limit of manufacture tolerance, and tyres at the upper limit.

Or maybe just the sizes involved. Even at maximum tolerances some pairings are pigs. It all comes about due to there being so many different ways of specifying tyre and rim sizes. Like with like is probably best, fitting inch sized tyres to inch sized rims, rather than a pick-a-mix of continental and imperial standards.

It works the other way too, I've known tyres that fell off the other side of a rim as they were being put on, my trailer wheels are like that! With those they have to be kept centralised until being pumped up, demanding an extra pair of hands.
.