Upgrade tire, what is the correct tire width?

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Milena

Active Member
I have a Carrera Crossfire 3. I am constantly getting punctures on the rear tire.

I want to replace the rear tire with a Schwalbe Marathon Plus to reduce punctures. Which width should I get of that tire? My current stock ones are 700 x 42c. I cannot find a marathon plus in that exact size.
Also I ride gravel, with the occasional stretch of muddy grass, and asphalt. Will the Marathon Plus be ideal for those terrains?

Thanks
 
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Ajax Bay

Guru
Location
East Devon
Exact width doesn't matter. The limit to width (and height) is the space the frame and fork allow. Measure the actual width of the current (?Kenda) tyre and the space there is on either side (in the fork, between the chainstays and between the seatstays, and check the height clearance you have at the chainstay and seatstay bridges (the height on M+s, ime is greater than their width)).
M+ is a very heavy tyre (3 times the weight cf a Conti GP5000 for the same ETRTO size) and is the least likely tyre make/model to suffer a puncture.
An M+ will be just as good as the tyre you have on for "gravel, with the occasional stretch of muddy grass, and asphalt".
ETRTO is 42-622: how about this (a Mondial rather than a Plus):
https://www.sjscycles.co.uk/tyres-l...ondial-hs428-tyre-with-reflex-700-x-40-42622/
or https://www.halfords.com/cycling/bi...-700c-x-45c-with-puncture-protect-470918.html
 
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OP
OP
M

Milena

Active Member
Exact width doesn't matter. The limit to width is the space the frame and fork allow.
M+ is a very heavy tyre (3 times the weight cf a 5000 for the same ETRTO size) and is the least likely tyre make/model to suffer a puncture.

So is it too heavy for me? What's cf a 5000?
 

Jameshow

Veteran
I have a Carrera Crossfire 3. I am constantly getting punctures on the rear tire.

I want to replace the rear tire with a Schwalbe Marathon Plus to reduce punctures. Which width should I get of that tire? My current stock ones are 700 x 42c. I cannot find a marathon plus in that exact size.
Also I ride gravel, with the occasional stretch of muddy grass, and asphalt. Will the Marathon Plus be ideal for those terrains?

Thanks

What's your budget ?
 

Spiderweb

Not So Special One
Location
North Yorkshire
I have a Carrera Crossfire 3. I am constantly getting punctures on the rear tire.

I want to replace the rear tire with a Schwalbe Marathon Plus to reduce punctures. Which width should I get of that tire? My current stock ones are 700 x 42c. I cannot find a marathon plus in that exact size.
Also I ride gravel, with the occasional stretch of muddy grass, and asphalt. Will the Marathon Plus be ideal for those terrains?

Thanks

Your not going to get a marathon in the same 42mm size, going a few mm smaller will be fine.
I would go for the Schwalbe Marathon GT365, 700c x 38mm.
They’re a steal at £9.99 each from Ribble.
A bit more grip than the marathon plus.
Please be aware that Ribble are sometimes a bit slow to deliver, my last order took 9 days;

https://www.ribblecycles.co.uk/p/SCOETYRR100000000000/gt-365-performance-lone-race-guard

IMG_2927.jpeg
 
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Alex321

Veteran
Location
South Wales
Exact width doesn't matter. The limit to width (and height) is the space the frame and fork allow. Measure the actual width of the current (?Kenda) tyre and the space there is on either side (in the fork, between the chainstays and between the seatstays, and check the height clearance you have at the chainstay and seatstay bridges (the height on M+s, ime is greater than their width)).
M+ is a very heavy tyre (3 times the weight cf a Conti GP5000 for the same ETRTO size) and is the least likely tyre make/model to suffer a puncture.
An M+ will be just as good as the tyre you have on for "gravel, with the occasional stretch of muddy grass, and asphalt".
ETRTO is 42-622: how about this (a Mondial rather than a Plus):
https://www.sjscycles.co.uk/tyres-l...ondial-hs428-tyre-with-reflex-700-x-40-42622/
or https://www.halfords.com/cycling/bi...-700c-x-45c-with-puncture-protect-470918.html

SjS have marathon+ in close enough to your exact size
https://www.sjscycles.co.uk/tyres-l...r-hs404-tyre-with-reflex-28-x-175-inch-47622/
 

Ajax Bay

Guru
Location
East Devon
47 is > 42 @Alex321 - measure first. When I fitted a 28-622 M+ where a sidewall bulging PR2 28 had been, the issue was its height for mudguard (non)clearance, under the seatstay bridge. Annoyingly it was OK just spinning the wheel but at 7am, rolling out needing to ride >200km (Day 5 of end-to-end having fitted tyre near end of Day 4), when sitting on the bike there was contact. Stop. Remove and ditch mudgard. Carry on. Oban ferry caught at end of day.
 
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OP
OP
M

Milena

Active Member
Exact width doesn't matter. The limit to width (and height) is the space the frame and fork allow. Measure the actual width of the current (?Kenda) tyre and the space there is on either side (in the fork, between the chainstays and between the seatstays, and check the height clearance you have at the chainstay and seatstay bridges (the height on M+s, ime is greater than their width)).
M+ is a very heavy tyre (3 times the weight cf a Conti GP5000 for the same ETRTO size) and is the least likely tyre make/model to suffer a puncture.
An M+ will be just as good as the tyre you have on for "gravel, with the occasional stretch of muddy grass, and asphalt".
ETRTO is 42-622: how about this (a Mondial rather than a Plus):
https://www.sjscycles.co.uk/tyres-l...ondial-hs428-tyre-with-reflex-700-x-40-42622/
or https://www.halfords.com/cycling/bi...-700c-x-45c-with-puncture-protect-470918.html

Will those 2 tires have enough puncture protection?
My stock kenda tires have puncture protection, but it's useless.

Surely it's better to go down a size a little if I can't get the exact 42mm match? I'm still going to have mudguards fitted, and I don't know what ones yet.

I don't understand those weird sizes. I only know 700 x insert width here
 
OP
OP
M

Milena

Active Member
Your not going to get a marathon in the same 42mm size, going a few mmm smaller will be fine.
I would go for the Schwalbe Marathon GT365, 700c x 38mm.
They’re a steal at £9.99 each from Ribble.
A bit more grip than the marathon plus.
Please be aware that Ribble are sometimes a bit slow to deliver, my last order took 9 days;

https://www.ribblecycles.co.uk/p/SCOETYRR100000000000/gt-365-performance-lone-race-guard

View attachment 714799

Will this have enough puncture protectection?
My current Kenda tires have got puncture protection, but clearly it is useless. I am getting punctures very often.
 

Ajax Bay

Guru
Location
East Devon
So is it too heavy for me? What's cf a 5000?

The 47-622 M+ is over a kilogram (per tyre!). I was comparing it (3 times as heavy) to a Continental GP5000 (tubed) - as I know its weight in 28mm width and the width of an M+ in 28. I'd go with @Spiderweb 's GT365s. Buy 2 for <£20, quickly, while stocks last. They have ideal tread for the varied surfaces you ride over and are sufficiently robust.
You need to discover why you are getting so many punctures. Tell us how these have happened.
Postscript: "The abbreviation cf. (short for either Latin confer or conferatur, both meaning 'compare') is used in writing to refer the reader to other material to make a comparison with the topic being discussed." I apologise for unreasonably using "5000" as short hand for the reputable Continental GP5000 tyre.
 
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Location
Cheshire
I have a Carrera Crossfire 3. I am constantly getting punctures on the rear tire.

I want to replace the rear tire with a Schwalbe Marathon Plus to reduce punctures. Which width should I get of that tire? My current stock ones are 700 x 42c. I cannot find a marathon plus in that exact size.
Also I ride gravel, with the occasional stretch of muddy grass, and asphalt. Will the Marathon Plus be ideal for those terrains?

Thanks

Smart Sams are good, Sons got them on his Marin :okay:

https://www.chainreactioncycles.com...VCuztCh0cbgggEAQYDCABEgKY8_D_BwE&gclsrc=aw.ds
 
OP
OP
M

Milena

Active Member
The 47-622 M+ is over a kilogram (per tyre!). I was comparing it (3 times as heavy) to a Continental GP5000 (tubed) - as I know its weight in 28mm width and the width of an M+ in 28. I'd go with @Spiderweb 's GT365s. Buy 2 for <£20, quickly, while stocks last. They have ideal tread for the varied surfaces you ride over and are sufficiently robust.
You need to discover why you are getting so many punctures. Tell us how these have happened.

I see Schwalbe have replaced the gt 365 with '365'. I'm assuming it's somehow better? The new one without the gt in it?

Also, will the gt 365 have much better puncture protection than my kenda tires? And how can one tell?

First puncture was apparently a thorn. Gave it to my lbs to fix, and he told me.

Next one, sounds like multiple punctures. This one has happened after just riding the bike 5 or so times since my lbs did a puncture repair. I haven't looked at what's caused it yet. I need tire levers, puncture repair kit etc. Only just got a pump delivered yesterday. Joeblow sport 3.

Also, my tires and rims are dirty. Rear tire cannot hold air due to the punctures. I reckon I shouldn't get dirt, mud, grit etc into tire where there's the tube and rim, while doing a puncture repair.

Can I wash the tire, tube and rim? I mean washing it as is, would mean water would go into the rim etc. So I might be better off just separating rim, tube, and tire and washing them all?

Or will it rust my rim because water will get caught under the rim tape strip thing?
 
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