Which Tyres?

I've had two Veloflex sidewalls start to bulge after a while on carbon rims, but also plenty of others that haven't. Still alive to tell the tale.

"The difference in rolling resistance of the tyres at the top are all to be taken with a large heaping of salt."

Hey, you provided it as evidence. It just happened the evidence proved my point.

"137.5g"
"At least 150g difference"
Well it's not then is it? I already agreed that tubs were lighter. Remind me, how much of a factor this weight is in bike speed... ?

"Many races have been won with people riding the last km on flat."
Pics or it didn't happen.

"Imperial riders are faster, right?"
Clincher riders are faster, imperial or otherwise.

"Why. You mean there are no punctures or other kinds of tyre defects in races? Heck even on the track I've seen tyres fail-- even explode."

I don't know what point you're making.
You said because wheel swaps were allowed in races, tubs were somehow faster. My point is, if you can swap a wheel when it fails, it's irrelevant what type of tyre is being used.

"With tubulars they are not 100%"

Correct.

"The tyre (Continental) was completely trashed"
You should've listened to my earlier advice that Continentals are shit. I would've made a tyre boot and ridden home. I've seen people will clinchers with grass to get home.
Actually, with the money I've saved not buying stupid tubulars I'd have just called a cab.

I've never used a Veloflex tyre, I have no idea. Googled...

"I got a reply from veloflex. The warning is due to open mould carbon rims which have sharp edge in the bead area which may cut the cotton casing. I think I'm safe with the zipps"
http://www.bikeforums.net/road-cycling/989812-veloflex-master-25-open-tubular.html

From the same thread: "I've used them just fine on Zipp and generic Chinese carbon rims without any rim-related problems. Blowing out a poorly constructed gumwall sidewall....that's another issue."

New Corsa G+ 28mm finally arrived at work.

Felt quite thin compare to the GP4000S ii, tread width is 33mm, the Open Pave 27mm that it replace is 34mm, so almost identical.

It's exactly 28mm on 18mm internal width rims, and likely to get bigger.

The GP4000S ii is 31mm on the same rims but only 30mm of tread width.

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My 35 pasela PTs are really really nice so far, v pleased.

I was thinking of endowing my beater MTB with a pair of slicks for the spring and summer, can anyone recommend an OK pair that fits decently into the "budget" category? 26", of course. Sorry if this has already been asked somewhere in the 120 pages!

Kojaks, Paselas, etc.

Think I want to get the 25 version. How do they feel?

They feel fast (but then so does other high end tyres like the Schwable One), but have to drop the pressure a little more in the South Downs near Winchester as they lose a bit of traction climbing a 20% hill, whether the Open Pave in the past handle it OK.

It grip great in the wet tho, which is nice.

TL:DR; great for normal road, but not for loose surface like this;

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great, thanks. Quite pleasing on the eye too...

what's the go-to gumwall these days

Depend.

Light and fast? tough and durable? big or small?

for summer best road bike. ideally like 2000 miles out of each, if possible. I'm quite light so that'll skew durability in my favour

Well currently I find the Vittoria Corsa G is a pretty good summer tyres, that'll last you well (25mm, 28mm if you can fit it).

Thanks!

In a moment of drunken flashness I ordered since switch back hills from compass. Regretted the purchase immediately but did not cancel it... Anyway, they arrived yesterday. I thought I had strong thumbs but these were pretty painful to mount on Panceti rims. Reckon slightly deeper rims would be easier.

Once they were on the beads popped in nice and tight and they inflated perfectly first time. Tubes in at the moment but will test tubeless within the next couple of weeks.

Running 28/32 psi and they feel nice and soft without being squishy. Grip on the road is much improved over the Thunder Burts I was running and the liveliness (shimmy basically) at the front end has disappeared which was a very nice surprise. Interestingly they seem to roll on tarmac only as well as the Thunder Burts... a 10km commute into work isn't really the best place to test these but looking at my ave times across a bunch of segments and they look on par with the semi-noblies. Maybe I was tired this morning but I was not expecting that. Let's see how things shake down after a few longer rides.

Over all impression is very good but not overwhelmed with fanboi compass love quite yet... The feeling I had when I changed from 25mm Continental 4 seasons to 25mm Vittoria open tubs was a revelation. Was hoping to re-create that feeling... so far have not.

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Veloflex Master. I have 25mm Corsa (black walled equiavlent) with latex tubes on the summer bike, and they've been great so far. Much cheaper than the Vittoria at £25ish too

On what rims?

Has anyone tried the Specialized Turbo Cotton in 24mm?

The Shimano RS10's that came with the bike. Haven't decided which way I'm going with a nicer set of wheels yet - tubs vs clinchers, carbon vs alu etc.

I need a fresh set of gumwalls but i'd avoided veloflex because of the warning on the box you can't run them with carbon rims

I need a fresh set of gumwalls but i'd avoided veloflex because of the warning on the box you can't run them with carbon rims

Just got some brand new GP4000SII-- fresh from the factory. Sticker on the box says "Please observe the enclosed mounting instructions for carbon rims and tyre-rim combinations"!!

And what does it say?

Warning notice on the use of Continental clincher and folding tyres with carbon clincher rims

Carbon is a fantastic material for lightweight products. Its processing is, however, highly time-consuming. In addition, the use of carbon in real-life riding entails limits with regard to the brake performance (see above). In the case of carbon clincher rims there is the risk that the tyre edge is slit open by the sharp-edged design of the rim flange.

8 Therefore, before mounting, check that the hook of the rim is round. Take the aluminium hook edge type rim of a renowned manufacturer as reference. Move your finger carefully along both flanges of your wheels. You should not feel any extremely rough or sharp-edged areas. Replace critical rims to be on the safe side. If you are in doubt, seek an experienced bicycle dealer for advice

Does anyone know where I can get 35mm Paselas with folding beads? ithangyew

I'm debating the same problem for my new wheels. Probably going to avoid carbon clinchers and get some Chinese carbon tub wheels. I'll also probably get something like Campag Zondas for less nice days to put the Veloflex clinchers on.