Hybrid- Thinner tyres- much diffrence?

[ssray]

I have a Carrera hybrid with 700x42c tyres, would I notice any difference if I fitted a 700x35 for example?
Road use only.
Ta
Ray

[TheInternet]

If they are otherwise like-for-like then no, IMO. Changing for the smallest, lightest, slickest you can would offer the best chance. 32mm an option? Or 28?

[anonymous-user]

ssray said:

I have a Carrera hybrid with 700x42c tyres, would I notice any difference if I fitted a 700x35 for example?
Road use only.
Ta
Ray

Problem you have is the rim width, narrower tyres wont sit as well on the rim and you increase the risk of pinch flats or the tyre rolling off. You will need new tubes too, I had a puncture on my commuter (32mm tyres) but was carrying a 23mm tube for my road bike and they didnt have the volume to support the tyre. I have since bought bigger tubes! 42 to 35 wont make much difference unless they are slicks, you could try 32s but I doubt 28s will fit on the rim. Try 32s and pump them up hard, cheap inner tubes are the way to go as they are thicker rubber and will help support the tyre

[ssray]

Thanks, I was aware of the rim with problem, I will try 32`s or 35`s which ever is cheaper locally
Ta
Ray

[Barchettaman]

Continental Sport Contact are terrific if your budget will stretch to them.

Available in 622/28 up to 622/42. Highly recommended!

[evosticks]

On my hybrid I run 700 x 40 Schwalbe Landcruisers in winter when the cycle paths and trails are muddy and soggy to give me a bit more grip and 700 x 32 Schwalbe Marathons in the better weather .... both on the same rim. Both have done me well although I did put a panaracer flataway in the Landcruisers as their puncture protection was a bit ropey. The Marathons are a great tyre & roll like a dream @ 60/70 psi.

So assuming your 42s have quite a chunky tread, you'll notice a helluva (IMHO) difference on skinnier tyres with a less aggressive tread block

[ED209]

Jesus, some wide tyres being ran on hybrids, My boardman came with 25's

[battered]

No difference unless they are chunky treads. I wouldn't worry about the rim width between 42 and 35. Just choose one with a known low rolling resistance.

[Pieman68]

ED209 said:

Jesus, some wide tyres being ran on hybrids, My boardman came with 25's

Hybrid is a pretty broad brush though. Boardman MX is much more like a flat bar road bike, whereas something like the GT Transeo is closer to a mountain bike and probably more appropriate for tow paths etc.

My Transeo has front suspension, and runs on 40c Schwalbe Landcruisers. Run with plenty of pressure and the suspension locked on the roads so that it runs on the raised ridge and it is pretty decent compared to my old mountain bike - but then again I am by no means a regular or fast cyclist

[uncinqsix]

I've recently switched from 35c Marathons to 32c Gatorskins. The gatorskins are quite a bit lighter, and they do feel like they roll better

[gazza285]

pablo said:

Problem you have is the rim width, narrower tyres wont sit as well on the rim and you increase the risk of pinch flats or the tyre rolling off. You will need new tubes too, I had a puncture on my commuter (32mm tyres) but was carrying a 23mm tube for my road bike and they didnt have the volume to support the tyre. I have since bought bigger tubes! 42 to 35 wont make much difference unless they are slicks, you could try 32s but I doubt 28s will fit on the rim. Try 32s and pump them up hard, cheap inner tubes are the way to go as they are thicker rubber and will help support the tyre

There goes the modern thinking on wide rims then...

http://www.velonomad.com/articles/are-wider-rims-b...

As for tubes, have you seen how much a tube will expand? Of course a 23mm tube will fill a 32mm tyre, all my cyclocross tyres have 23mm tubes in, the tube doesn't support the tyre, the air does, that is the whole point of a pneumatic tyre. If the tube supports the tyre, how come you can slop some Stans Fluid in and run them tubeless?

[Watchman]

To a point, increasing the tyre pressure will decrease the rolling resistance. I say "to a point" though because I've enthusiastically pumped mine up to "rock solid" before only to find the bike hop around and crash into every surface imperfection.

[ssray]

Thanks very much for all of the reply's
Ray

[anonymous-user]

gazza285 said:

pablo said:

Problem you have is the rim width, narrower tyres wont sit as well on the rim and you increase the risk of pinch flats or the tyre rolling off. You will need new tubes too, I had a puncture on my commuter (32mm tyres) but was carrying a 23mm tube for my road bike and they didnt have the volume to support the tyre. I have since bought bigger tubes! 42 to 35 wont make much difference unless they are slicks, you could try 32s but I doubt 28s will fit on the rim. Try 32s and pump them up hard, cheap inner tubes are the way to go as they are thicker rubber and will help support the tyre

There goes the modern thinking on wide rims then...

http://www.velonomad.com/articles/are-wider-rims-b...

As for tubes, have you seen how much a tube will expand? Of course a 23mm tube will fill a 32mm tyre, all my cyclocross tyres have 23mm tubes in, the tube doesn't support the tyre, the air does, that is the whole point of a pneumatic tyre. If the tube supports the tyre, how come you can slop some Stans Fluid in and run them tubeless?

I think you've misunderstood the OPs issue and my response but very well done on the attempt.

[gazza285]

pablo said:

I think you've misunderstood the OPs issue and my response but very well done on the attempt.

Not really, his rims will accept narrower tyres without issue, and what you said about tubes was pure bks.