I see several 2016 bikes with it. Has anyone ridden it? Is it as good as 105 but with 1 less gear?

It's likely something akin to 5700 or 5600+. The trickle up being each generation. I'll bet that it's very good. I've had 5700 and 5800. 5700 was smooth and reliable. The new stuff is even better.

My wife's 2015 bike has 10spd Tiagra, the few times I rode it around trying to dial in shifting and such after a wheel change or cassette change, it feels as good as my 5700 105 that was originally on my podium (it's now an 11spd). I considered putting the 5700 gear on her bike but honestly the newest Tiagra is nice enough there's no point.

I like the new Tiagra a lot! 105 was the standard of "Best value for performance", but now Tiagra is.

I test rode at least a dozen bikes, and test rode tiagra 10, 105 11 and ultegra 11 extensively.

From what I could tell, there are no differences in shift quality between the three component groups.

I haven't bothered getting the citation, but there is a recent mtn bike publication which compared Deore vs XTR and found the shift quality was identical.

Shimano is so dialed, it's really kind of ridiculous at this point.

Even Sora 9, and 8 before that with the thumb shifters, were superb.

Shimano has perfected cabled, indexed shifting. Hyperglide, introduced a quarter of a century ago, offered essentially perfect shifting under load.

You don't ever have to worry about shift quality with shimano, esp. with rear shifting. I consider tiagra10 front shifting to be very good to excellent as well.

Shimano componentry is the best.

The way I've read and understand it (and I say this because I want to note that I'm not speaking from experience,) the difference between 105 and Tiagra shifters isn't the quality, but the better cable management with 105 vs. Tiagra.

Are you talking about 4600 with the cables coming out of the sides, or the new 4700 with the cables internally routed like 105/5800?

Must have been 4600, I heard it a while ago - the new groupset looks sweet.

It does. I saw a Giant Defy with the new Tiagra 4700 set. The brakes/shifters/internal cable routing and the crank matching 105/Ultegra/DA looks quite nice indeed.

I've started seeing bikes with 4700 as well. Haven't tried it, but given the usual trickle-down of Shimano technology, I'm sure it's going to be sweeter than 4600. Can't wait until it hits the shops -- plan on installing the group on my wife's bike.

Looking forward to hearing reviews on the new 4700 series.

Tiagra 4700 may well be the best 10 speed group that Shimano has ever made. Think of it as a 10 speed version of 105 5800.

I was looking at a Specialized Diverge SW for $2700, quote a bit over the $1500 limit my wife gave me. I was real excited to see the Tiagra version with Spyres down to $1500. That's a nice decrease!

The 2016 Tiagra group set is looking good, especially as they have got rid of the gear indicator windows.

And the ugly silver crank!

Whut??....well, that just killed it fer me.

I don't have a problem with the gear indicators. I have them on my deore shifters as well. They're a fun and useful feature IMO.

I like the look of the polished cranks as well.

The exposed cables eliminate (or at least minimize) friction and shift quality is actually top notch.

I wouldn't be surprised if 4600 has better shift quality than either 4700 or 5800 as a result.

That's what I was thinking, but you can still just look between your legs to see where you're at in the cassette.

Well, damn. That there's a good idea. I'd always looked under my arm and down to the right which sometimes led to runnin' into parked cars or kids playing on the sidewalk.

With their 11 speed groupsets, Shimano solved a problem that both Campagnolo and SRAM had long since dealt with. There is no downside to the concealed shift cables used on the newest Tiagra shifters,shift quality is at least as good as the previous version.

Road.CC just did an initial review. Looks pretty good.

Linky

GH

Does anyone know what places like Ribble and Wiggle be getting 4700 in stock? I really want to order one of these groups before the (short) Canadian road season is over.

You probably will not be seeing it until next year. Initially it will be OEM only

The grouppo is on wiggle and chain reaction cycles for like 300 to 350 bucks