How? Giving a list of attributes that a tire with low rolling resistance would have doesn't specifically answer what tire it is.
Lowest rolling resistance of 27 inch tires?
- Thread starter moongaze
- Start date
Page may contain affiliate links. Please see terms for details.
How? Giving a list of attributes that a tire with low rolling resistance would have doesn't specifically answer what tire it is.
Dec66
A gentlemanly pootler, these days
- Location
- West Wickham
You have to factor in puncture protection, I think. You can get the best rolling tyres, but it's not good having that marginal gain if you then have to spend 20 minutes fixing a puncture.
I've already got that covered with thicker tubes.
Dec66
A gentlemanly pootler, these days
- Location
- West Wickham
[QUOTE 4231702, member: 76"]If the website had said the Luganos were slicker than a slickly wet mongoose sliding on slippy lard, or the the Contis were tougher than Ross Kemp would you have believed that, or your own experience?
My point being that already knew the answers surely?[/QUOTE]
It's good to look up when considering a new tyre purchase. If I trust the information therein, I can then reduce my options to two or three, rather than going through the "experience" of five or six different types of tyre before settling on one.
Gets bloody expensive, making uninformed purchases.
My point being that already knew the answers surely?[/QUOTE]
It's good to look up when considering a new tyre purchase. If I trust the information therein, I can then reduce my options to two or three, rather than going through the "experience" of five or six different types of tyre before settling on one.
Gets bloody expensive, making uninformed purchases.
Dec66
A gentlemanly pootler, these days
- Location
- West Wickham
[QUOTE 4231714, member: 76"]That's a fair point. I probably am not the target audience for that site, as I normally buy the tyres which are on offer 
[/QUOTE]
It led me to the Vittoria Rubino Pro, which is an excellent midrange choice, and happens to be frequently on offer if you shop around
[/QUOTE]It led me to the Vittoria Rubino Pro, which is an excellent midrange choice, and happens to be frequently on offer if you shop around
Yellow Saddle
Guru
- Location
- Loch side.
Well, you don't have it covered. Tubes and tyres should be seen in combination when considering rolling resistance. It is the hysteresis in the tyre AND tube that causes rolling resistance and thick tubes made from butyl are worse than thick tyres made from silica rubber. The air pressure in the tyre squeezes the tube tightly against the tyre and any deformation at the contact patch happens in both.
Like I said, stop tackling the problem like a science experiment unless you understand all the relevant issues.
Ajax Bay
Guru
- Location
- East Devon
@moongaze Welcome 
to the forum, if this is indeed your first visit as a poster. Let's leave aside the stupendous 'abruptness' displayed by :
New tyres required, size 622-32.
Wants them to be 'fast' (read low rolling resistance).
Doesn't care about flat protection (presumably provided it's above a low threshold, because
Would like 'value' ie not too expensive.
Currently Continental ultra sports
Looked at Continental grand race
They look similar but which one is faster?
Or are there others with a better combination of strengths?
There's a definite discontinuity from 28 to 32 for 622 tyres. The weight takes a step up and it's difficult to find a tyre which actually has (as opposed to claims or subjective reviews) low rolling resistance. They all seem to claim added puncture protection (and therefore weight and maybe price). My suggested approach is to look at the rolling resistance site and then see what the tyres near the top of the list have as wider brothers/sisters.
A tyre I suggest the OP may wish to consider (comes in 32) is:
Vittoria Randonneur Pro II
to the forum, if this is indeed your first visit as a poster. Let's leave aside the stupendous 'abruptness' displayed by :and try to analyse the question posed:
New tyres required, size 622-32.
Wants them to be 'fast' (read low rolling resistance).
Doesn't care about flat protection (presumably provided it's above a low threshold, because
(comment: rather thinly covered)
Would like 'value' ie not too expensive.
Currently Continental ultra sports
Looked at Continental grand race
They look similar but which one is faster?
Or are there others with a better combination of strengths?
There's a definite discontinuity from 28 to 32 for 622 tyres. The weight takes a step up and it's difficult to find a tyre which actually has (as opposed to claims or subjective reviews) low rolling resistance. They all seem to claim added puncture protection (and therefore weight and maybe price). My suggested approach is to look at the rolling resistance site and then see what the tyres near the top of the list have as wider brothers/sisters.
A tyre I suggest the OP may wish to consider (comes in 32) is:
Vittoria Randonneur Pro II
gbb
Squire
- Location
- Peterborough
If it's any consolation, i read it once and understood what you meant. Rolling resistance is important to you. You don't want to pay inflated prices for added puncture protection.
C'mon guys , new member and we're (well i'm not) trying to shoot him down with technicalities. Not very welcoming is it ?
Yellow Saddle
Guru
- Location
- Loch side.
This is a technical discussion and I'll just stick to the facts. It is reads from the OP's text that he wants faster but, he would even consider the more expensive one with puncture protection if it was faster. He says "I'm not sure which one is faster." Why would he even consider it if it was a) too expensive and b) contains features he doesn't want.
I maintain the OP is under-informed. He wants fast, yet puts up with thick tubes and may even consider puncture protection. He says he is a messenger and therefore wants "fast" but doesn't know that fast (i.e. silica rubber) performs very poor in the wet and is not durable enough for good mileage. He doesn't care about higher mileage yet somehow indicates that he is price sensitive.
Why pussyfoot around it all? You simply can't have your cake and eat it. His criteria is unobtainable.
I'll rather shoot him down with real-world technicalities than offer BS advice. And, no-one has done any shooting down either.
gbb
Squire
- Location
- Peterborough
TBF, he doesnt actually say 'he would even consider the more expensive one with puncture protection if it was faster'...he says 'BUT, They're higher priced but I think it's because of the added puncture protection'...he at no stage says puncture protection is a requirement or important to him, but does say speed is.
I interpret that to mean the puncture protection is a facet of a particular tyre that is there, but not neccessarily of importance to him.
Perhaps Moongaze can clarify. It seems quite clear to me...but i'll happily shut up if i'm wrong.
As a side issue....i agree, thicker tubes will give little or no extra puncture protection.
Last edited by a moderator:
Yellow Saddle
Guru
- Location
- Loch side.
You can't have both.
http://conti-tyres.co.uk/road-and-track/clinchers/grand-prix-4000-s-ii
http://conti-tyres.co.uk/technical/vectran-breaker
it seems you can, unless you can disprove conti in anyway
http://conti-tyres.co.uk/technical/vectran-breaker
it seems you can, unless you can disprove conti in anyway
Yellow Saddle
Guru
- Location
- Loch side.
The fallacy you commit is appeal to authority.
Putting codes and fancy names in a tyre's description doesn't alter basic physics.
Last edited by a moderator:
i think there is plenty of independant tests out there that proves conti to be true.........best you go read them, unless you've got your own technical data available to prove otherwise. if the latter is to be true, then maybe you should provide a link to this data, rather than just calling people out as conforming to authority.
i look forward to reading your data and then forming my own opinion based on relevant data provided.
