Currently have a 2006 Specialized Roubaix triple with aluminum frame and carbon fork and seat stays.

I am considering trading the 2006 in on a new 2010 Roubaix with full carbon frame, compact 105
drivetrain and components. Do you think I'll notice a better ride, and in short, is it worth the upgrade?

I don't race, but ride 2,500-3,500 miles/year in the Fort Worth area.

While I cannot answer that question just yet, I also have a Roubaix frame like your current one. I just pulled the trigger on a 2009 Roubaix S-Works frame and will kit it with Ultegra. I think it will be lighter and stiffer. I don't know how much the Alu-carbon and full carbon frames weigh though I suspect the new full carbon frames are a bit lighter.

10-year treasuries pay a measly 3.5%.

Get the bike.

I ride an '07 comp, and was in my LBS today and noticed an '09 or '10 Roubaix comp. I was amazed at how much bigger the downtube and BB area is with the newer designs, so I'll bet coming from the aluminum frame '06 version to the '10 comp would be significant.

One point to note, the '10 comp has 7r carbon layup, compared to my 6r from the '07 model. The expert spec makes the jump to 9r carbon and also full Ultegra, for only an extra $600 in list price. I'd definitely give that some thought if you can stretch.

I am looking at the '09 comp if I can find one and if not a '10 Comp with 105 on it. I 'm still trying to get a test ride first. Not many test bikes here in WI in the Roubaix, only Tarmac series to try. I am going fro m a traditional steel make up to a compact too. I will keep you posted.
Can I ask the price you got on it? I 'm finding '09 for $1500 and it seems the '10 are not dropping below $1700.
Thanks.

I have a near mint condition 2008 roubaix S-works for sale in the classified section, send me a PM in you are interested, I will sell it for a good deal, I need some cash.

I use to have a 2006 Roubaix Comp which is a carbon model. I test rode a 2010 model and I was quite impressed with the ride. Same model, new year. Much better. I could imagine that this model would be light years difference between your Aluminum model and the Comp model.

I bought a 2009 Roubaix Compact w/ 105. LOVE the ride quality. Some people whine about it not being as stiff as the higher models but i don't race and i've never noticed any flex. Just sweet sweet buttery ride.

I thought 2006 Roubaix had a carbon frame. From Specialized site:
Specialized FACT 6r carbon, triple monocoque construction, compact design, Zertz seatstay inserts

Yes. You will notice. But get the Expert. $600 more with a sweeter frame. WAAAAAAYYYYY sweeter frame.

He's probably got the base level Roubaix. Has carbon stays but aluminum front triangle. https://www.specialized.com/us/en/bc/...6&menuItemId=0

My 2006 Comp is carbon.

I would say you will notice a smoother ride and doing a test ride should confirm it. I have a 09 Comp frame with full Ultegra for my bad weather bike and it has a nice ride with okay handling. So if you want to ride long distances with good isolation from vibration and road chatter the Comp is a good bike. If you want to carry more speed through some corners the Comp frame and fork can be a little too flexible at times.

I bought the base Roubaix triple in August and have been fairly happy with it. I was disappointed that it weighed 21 pound versus the 19 or 20 I expected. Also the saddle and my butt aren't a good match even after a professional fitting and seven months. I just ordered a Selle Italia Flite Gel Flow with the hope it will be better.

Also I've had 4 flats with the stock tires but then I have ridden all winter and the snow gravel. They seemed soft and picked up a lot of gravel. I switched to Michelin Kryloin Carbons and got three flats almost immedetely. Guess I am just lucky. The Michelin however are much much nicer from a performance and comfort perspective.

I switched the cassette to an IRD unit with a 34 tooth lower gear. That required a new xl derailer. We have a lot of hills including 3/4 mile ride to my house averaging about 7% and including some two digit grades. I wanted to baby my knee tendions and that has worked very well.

I have put a little over 2000 miles on it since August. However since I am new to biking I have no experience with other bikes with which to compare.

Now that I have ridden the new bike for 700 miles and the old bike as well, I can say that that the new Roubaix S-Works is much smoother and stiffer than the old Alu/carbon triple. It is faster and still comfortable. Go for any 2009+ Roubaix carbon frames. All I need now is an all-out race-worthy carbon frame...don't ask me why though.

It's just a little more for the Expert and you get full Ultegra and a better frame. I mulled it over when I bought my 2010 Roubaix Expert back in November and decided it was worth the extra money for what you get with the expert. I have about 2500 miles on mine since November and couldn't be more pleased.

I just bought an expert today. The Expert has the same frame as the pro level without some of the Dura-Ace stuff and carbon bars.