Schwalbe marathon supreme width
04-06-21, 02:12 AM
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Schwalbe marathon supreme width
Hello,
I'm owning a Trek 750 and i'm on the quest to fit the widest tire i can, keeping some safe margins.
A bicycle shop told me he wouldn't go over 38 but i might be planning on buying some SKS clip fenders so i went stubborn and bought some Schwalbe Supreme 42-622 (28x1,60).
Problem is that the Schwalbe is as wide as my old 37-622 which is 37cm, i measured both.
Is that me not understanding all that naming ? Or is Schwalbe having its own size shift ?
I'm owning a Trek 750 and i'm on the quest to fit the widest tire i can, keeping some safe margins.
A bicycle shop told me he wouldn't go over 38 but i might be planning on buying some SKS clip fenders so i went stubborn and bought some Schwalbe Supreme 42-622 (28x1,60).
Problem is that the Schwalbe is as wide as my old 37-622 which is 37cm, i measured both.
Is that me not understanding all that naming ? Or is Schwalbe having its own size shift ?
04-06-21, 07:23 PM
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Is it too wide? hitting chainstays and/or fork blades
or
Is it too tall? hitting brake&brake bridge and/or bottom of fork crown.
The reason i ask is that i have a pair of Marathons (probably not Supreme) geared to the commuter market, the extra thick tread makes them taller than other tires of the same width.
or
Is it too tall? hitting brake&brake bridge and/or bottom of fork crown.
The reason i ask is that i have a pair of Marathons (probably not Supreme) geared to the commuter market, the extra thick tread makes them taller than other tires of the same width.
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Last edited by Wildwood; 04-06-21 at 07:28 PM.
04-09-21, 08:14 PM
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17mm internal rim width is fairly narrow for 42mm tyres. As an example, WTB advise 24mm internal rim width for their 48mm Horizon tyres, although traditionally ~50mm MTB tyres have been run on ~19mm rims for years with no real adverse consequences, and it might be preferable:
https://www.renehersecycles.com/myth...eed-wide-rims/
Usually IME Schwalbes measure slightly smaller than the stated size - they acknowledge that on their website:
https://www.schwalbe.com/en/reifenmasse
It does vary, but Schwalbe aren't as bad as some in that respect - I don't think they're usually more than a couple millimetres under, if at all.
I run 50mm Supremes on 19mm rims and they measure 48mm, but I tried 42mm Continental Tour Rides and they only measured 38mm which, given that the original Kenda tyres were 48mm, didn't work out.
Do you know why the bike shop wouldn't go over 38mm - was it for fender clearance? And what make of tyre were you running before that gave you a true 37mm on your rims?
The Supremes are excellent road tyres. The sidewalls are meant to be a bit fragile on gravel but I wouldn't use them for that. I've also got Schwalbe Almotions which are sturdier. I wouldn't worry if they measure a little under size.
https://www.renehersecycles.com/myth...eed-wide-rims/
Usually IME Schwalbes measure slightly smaller than the stated size - they acknowledge that on their website:
Why are tires often narrower than the stated tire size?
In order to ensure that tires have sufficient frame clearance, tire manufacturers generally prefer to keep production closer to the lower end of the permitted tolerance (+/- 3 mm).
Carcass casing materials have become more and more sophisticated over time. That reduces the tire widening after the fitting.
Furthermore, inflation pressure also plays a major role. With maximum inflation pressure the tire becomes wider than with low pressure. And a recently fitted tire still widens over time. This can make a difference of 1 to 2 mm.
The tire width is measured at the widest point, i.e. outside the lug.
In order to ensure that tires have sufficient frame clearance, tire manufacturers generally prefer to keep production closer to the lower end of the permitted tolerance (+/- 3 mm).
Carcass casing materials have become more and more sophisticated over time. That reduces the tire widening after the fitting.
Furthermore, inflation pressure also plays a major role. With maximum inflation pressure the tire becomes wider than with low pressure. And a recently fitted tire still widens over time. This can make a difference of 1 to 2 mm.
The tire width is measured at the widest point, i.e. outside the lug.
It does vary, but Schwalbe aren't as bad as some in that respect - I don't think they're usually more than a couple millimetres under, if at all.
I run 50mm Supremes on 19mm rims and they measure 48mm, but I tried 42mm Continental Tour Rides and they only measured 38mm which, given that the original Kenda tyres were 48mm, didn't work out.
Do you know why the bike shop wouldn't go over 38mm - was it for fender clearance? And what make of tyre were you running before that gave you a true 37mm on your rims?
The Supremes are excellent road tyres. The sidewalls are meant to be a bit fragile on gravel but I wouldn't use them for that. I've also got Schwalbe Almotions which are sturdier. I wouldn't worry if they measure a little under size.
04-12-21, 10:42 AM
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17mm internal rim width is fairly narrow for 42mm tyres. As an example, WTB advise 24mm internal rim width for their 48mm Horizon tyres, although traditionally ~50mm MTB tyres have been run on ~19mm rims for years with no real adverse consequences, and it might be preferable:
It does vary, but Schwalbe aren't as bad as some in that respect - I don't think they're usually more than a couple millimetres under, if at all.
I run 50mm Supremes on 19mm rims and they measure 48mm, but I tried 42mm Continental Tour Rides and they only measured 38mm which, given that the original Kenda tyres were 48mm, didn't work out.
It does vary, but Schwalbe aren't as bad as some in that respect - I don't think they're usually more than a couple millimetres under, if at all.
I run 50mm Supremes on 19mm rims and they measure 48mm, but I tried 42mm Continental Tour Rides and they only measured 38mm which, given that the original Kenda tyres were 48mm, didn't work out.
Do you know why the bike shop wouldn't go over 38mm - was it for fender clearance? And what make of tyre were you running before that gave you a true 37mm on your rims?
The Supremes are excellent road tyres. The sidewalls are meant to be a bit fragile on gravel but I wouldn't use them for that. I've also got Schwalbe Almotions which are sturdier. I wouldn't worry if they measure a little under size.
I'm not entirely set on the route but i think it will be mostly asphalt with some casual gravel/dirt paths (I assume). I also considered the almotions.
From the ETRTO chart it seems i can grab the 50mm with my rim, do you think it will be too much ? The point of the wide tire for me was just confort.
