Which Tyres?

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They're Conti.

I usually ride 530g tyres. 245 may as well be a race tyre for me. In fact, 240g IS a race tyre for me.

A good friend of mine rides the bontrager r3 tubeless with sealant , on the two times I've been out with him & he punctured 1 sealed ok with sealant the other time with a small tack it didn't .
Very messy & hard to get the tyre off & fit a tube 60 miles from home
So I'd say tubeless are good but not total protection

Are the Schwalbe Snow Stud (currently cheap on px) worth having around the house (on a spare pair of wheels) in case there is a period of prolonged snowiness (my commute is 95% on uncleared cyclepaths) or are the sufficiently inferior to the much more expensive marathon winter to not be worth it.

The metal studs are a black ice game changer no matter type or model.

I’m trying to fit crud road racers to my road bike and the rear brake bridge clearance is really tight, even with 23mm. I’m a fan of the Conti GP4000s but they seem to come up quite large for the quoted sizes, any recommendations for a good winter training tyre that comes up quite small would be appreciated.

Vittoria measure under-size regularly.

Have you followed their video for fitting Cruds? If not, it's worth a look.

Cheers, I seem to remember reading that rubino pros are decent?

I haven't watched the video, though I have fitted cruds before, just not with quite such tight clearances. I'll check it oot,I'm sure I'll learn something

rubino pros are decent

I think they're ok, reasonably priced tyres. They sometimes get a bad rap because (like Gatorskins) they're on a lot of bikes (a lot of bikes ridden by inexperienced riders) and it's easy to blame tyres when you crash. Unlike Gatorskins, they're cheap and not horrible to ride.

Just fitted a Maxxis Refuse to my Open Pro rimmed winter bike, the 25c version comes up as 23mm so if you buy a 23c it should be pretty small. They feel pretty bomb proof and seems grippy enough.

I think the latest version were incorrectly sized, @Dammit notice this in the past.

So I bought a 23c? Bummer.

25c Maxxis refuse are actually 24mm anyway, 23c are 23mm.

They are very bomb proof, nice and grippy and happy at almost any psi. Heavy, but spin up faster than you'd think for the weight.

I've been riding them for 6 years now, maybe three punctures? 5/5.

They are shit. Fixed bike is covered in mud/grass from Sunday so couldn't face commuting on it so took my Oak which currently has the 25mm Four Seasons I complained about before. Rear wheel flat on the smoothest part of my commute. Unless there's a massive nail through them or similar I'm going to replace with Gravel King's or Refuse.

What are the Conti TT tyres like for road use?

Seems to have a puncture belt and also weigh 140g compared to a 4000sII at 215g?

These ones: http://www.wiggle.com.au/continental-grand-prix-folding-time-trial-tyre-ltd-edition/

Road Race use maybe, just (if you can take a lap out in a crit). Normal road riding - silly. They're TT tyres for a reason.

Ah I thought so. Might stick with the 4000s then. Any other equivalents for a club ride/occasional race tyre from Vittoria or any others? Not too familiar with other manufacturers, except for Michelin which I wore out wayy too fast. Need a new set of 23c for some Flo30s...(sale opens in 6 hours!)

Road racing I always used Pro Race. TTing I use fat Pro Optimums or one of the faster Vittoria offerings. If it's just club runs and stuff I'd use something like Rubino Pro, Lithion 2 or those much more durable, long-lasting options. Ain't nobody got time for the p_nct_re fairy. They fine for everything but A races as well and even then there's an argument against super light tyres because they're not faster if they're flat!

Anyone used Veloflex Masters? I want another set of gumwalls but my Vittorias were shredded in a month, full of slits and nicks. Gone back to trusty GP4000s but for vanity reasons would like a set of similarly light fast gumwalls.

They're less durable than Open Corsa SCs. For gumwalls there's nothing really available in between the Vittorias and Paselas in terms of durability.

Clement Strada LGG looks to be a good compromise for tan walls - 25 or 28c

They look interesting. There's also the Grand Bois/Compass options, if you can find them.

Yeah, I think I am going to try the 28s on my CX bike for commuter duties (they come up big apparently - more like a 30c)

Can vouch for these. Been running them since the end of summer for commuting. Not really a true skinwall a-la veloflex's, so not as supple or fast. More comparable to a Durano really. But if it's durability you're after then these might be ones to have a look at.

The 28's do come up big also. I run the 25's which are fine.