Shimano Sora vs 105
04-28-18 | 11:43 PM
#1
Thread Starter
Newbie
Joined: Apr 2018
Posts: 2
Likes: 0
Shimano Sora vs 105
So I’m getting a new road bike soon because I bought a CCM presto when I was broke and it was cheap. Its wearing down as expected and I’m wondering what grouspet I would find best value at when I look for a bike.
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
04-29-18 | 03:46 AM
#2
Senior Member
Joined: May 2015
Posts: 2,617
Likes: 10
From: Richmond VA area
Bikes: '00 Koga Miyata Full Pro Oval Road bike.
So I’m getting a new road bike soon because I bought a CCM presto when I was broke and it was cheap. Its wearing down as expected and I’m wondering what grouspet I would find best value at when I look for a bike.
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
04-29-18 | 05:05 AM
#3
Senior Member
Joined: Jul 2017
Posts: 919
Likes: 1
04-29-18 | 05:19 AM
#4
Junior Member
Joined: Jan 2017
Posts: 154
Likes: 110
From: Central Florida
Bikes: Road and off-road
On my road bike I have a mix of Sora, 105, and Ultegra components. I haven't found significant differences in performance from any of them, other than the gear limitations of the Sora shifters. They all work fine. Although I don't race. If money is a factor, go with the Sora.
04-29-18 | 05:22 AM
#5
Senior Member
Joined: Jul 2008
Posts: 9,176
Likes: 653
From: Minas Ithil
I would be surprised if Sora weighed even a half pound more and if anyone could tell any difference between the two except for the one cog. And most people wouldn't even notice that. Do you actually know the weight of each group?
04-29-18 | 08:47 AM
#8
well hello there
Joined: May 2005
Posts: 15,491
Likes: 390
From: Point Loma, CA
Bikes: Bill Holland (Road-Ti), Fuji Roubaix Pro (back-up), Bike Friday (folder), Co-Motion (tandem) & Trek 750 (hybrid)
So I’m getting a new road bike soon because I bought a CCM presto when I was broke and it was cheap. Its wearing down as expected and I’m wondering what grouspet I would find best value at when I look for a bike.
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
I know I’m only asking about the groupset so lets say theres a bike with sora for $575 and a 105 for $900 assuming the frame, rims etc is the same in both bikes, which would be better? CCM bike parts are so cheap so would a sora groupset on a road bike feel incredible to me? Or is the 105 that much more worth it for someone like me. I ride multiple days a week alone and with friends.
Thanks in advance everyone
__________________
.
.
Two wheels good. Four wheels bad.
.
.
Two wheels good. Four wheels bad.
04-29-18 | 09:12 AM
#9
Senior Member
Joined: Oct 2007
Posts: 2,284
Likes: 30
From: Murica
Is this question hypothetical or do you have two real bikes to compare?
105 is the gold standard in bike components. I don't think the comparison between 105 and the higher groupsets translates lower down in the line.
04-29-18 | 09:27 AM
#10
Banned
Joined: Jun 2010
Posts: 43,586
Likes: 1,380
From: NW,Oregon Coast
Bikes: 8
You may be willing to buy the lower cost bike with Sora , but find the 105 one too expensive . it all works adequately..
Its all about offering a bike at a price point the buyer is able to pay.
Its all about offering a bike at a price point the buyer is able to pay.
04-29-18 | 09:46 AM
#11
Senior Member
Joined: Jan 2018
Posts: 686
Likes: 265
From: Redmond, WA
Bikes: '07 Bill Davidson, '86 Nishiki Tri-A, '87 Centurion Ironman
I am more of an endurance biker, not a racer.
I moved from Sora full group set to 105 full group set beginning of this year.
Sora was compact 50/34T with 12-30 9sp cassette. My 105 built on an old steel frame is 50/34 with 11-32 11sp cassette.
The shifting and everything is much smoothier and crisp on 105 as expected since 105 is 2 level up.
One big difference I do noticed is that the rolling resistance is way improved on my new bike.
I got a much better tires - Conti GP4SII 700c 25 - compared with some cheaper tires that came along with the Tommaso Tiempo - Kenda 700c 23 tires.
I don't see any remarks on the wheel hubs for the Tommaso though... I got 105 hubs on new bike.
if you are not a racer both group set work fine - shifts, brakes etc - with minimal difference in 'how fast you want to go from A to B'.
investing in a good tire set seems to provide the most bang for the buck in my experience.
I moved from Sora full group set to 105 full group set beginning of this year.
Sora was compact 50/34T with 12-30 9sp cassette. My 105 built on an old steel frame is 50/34 with 11-32 11sp cassette.
The shifting and everything is much smoothier and crisp on 105 as expected since 105 is 2 level up.
One big difference I do noticed is that the rolling resistance is way improved on my new bike.
I got a much better tires - Conti GP4SII 700c 25 - compared with some cheaper tires that came along with the Tommaso Tiempo - Kenda 700c 23 tires.
I don't see any remarks on the wheel hubs for the Tommaso though... I got 105 hubs on new bike.
if you are not a racer both group set work fine - shifts, brakes etc - with minimal difference in 'how fast you want to go from A to B'.
investing in a good tire set seems to provide the most bang for the buck in my experience.
04-29-18 | 10:07 AM
#12
Banned.
Joined: Jul 2006
Posts: 4,287
Likes: 838
That much of a price difference, get the Sora group, 105 5800 is pretty awful anyway. Spend more on really good tires and you'll be better off than a "nicer" groupset.
Pounds heavier!
Most of the engineering that goes into higher level groupsets is figuring out how to get customers personally attached to the product, attaching significance to small incremental changes in weight and positioning in professional racing for maximum return on sponsorship dollar.
Pounds heavier!
Most of the engineering that goes into higher level groupsets is figuring out how to get customers personally attached to the product, attaching significance to small incremental changes in weight and positioning in professional racing for maximum return on sponsorship dollar.
04-29-18 | 11:46 AM
#13
Senior Member
Joined: May 2015
Posts: 2,617
Likes: 10
From: Richmond VA area
Bikes: '00 Koga Miyata Full Pro Oval Road bike.
04-29-18 | 12:14 PM
#15
Senior Member
Joined: May 2015
Posts: 2,617
Likes: 10
From: Richmond VA area
Bikes: '00 Koga Miyata Full Pro Oval Road bike.
04-29-18 | 11:19 PM
#17
Sunshine
Joined: Aug 2014
Posts: 18,729
Likes: 10,282
From: Des Moines, IA
Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo
Colombo357- 105 is the gold standard in bike components.
Spoonrobot- 105 5800 is pretty awful anyway.
love this place. In just 11 responses, the OP can get an opinion that something is both the gold standard and also pretty awful.
good stuff!
Spoonrobot- 105 5800 is pretty awful anyway.
love this place. In just 11 responses, the OP can get an opinion that something is both the gold standard and also pretty awful.
good stuff!
04-30-18 | 12:42 AM
#18
Junior Member
Joined: May 2016
Posts: 121
Likes: 17
From: Arlington, VA
For the record, including BB and chain, 105 is approximately 350 grams (0.75 pounds) lighter than Tiagra. I don't know where that puts Sora, but I'd imagine it doesn't double the difference.
I have heard, though I have no personal experience, that the biggest benefit of going to 105 from a lower end shimano set is in the brake performance.
I have heard, though I have no personal experience, that the biggest benefit of going to 105 from a lower end shimano set is in the brake performance.
04-30-18 | 07:51 AM
#19
Senior Member
Joined: Feb 2018
Posts: 108
Likes: 0
um 1 gram is 1 gram, 5+5=10.... 390+10=400 .... 400+300=700 etc... I built three bikes one has ultegra with light wheels it’s at 13.5 pounds. The other two have tiagra and are at around 18 pounds.. there’s no magic to it. Every gram adds up and equates to a heavier bike?
04-30-18 | 08:48 AM
#20
Senior Member
Joined: Aug 2015
Posts: 1,886
Likes: 375
From what I understand, 105 is as good from a performance perspective as any mechanical group set. The main difference between it and higher end sets is weight. I'd go with that as you'll never really need/want to upgrade.
04-30-18 | 08:52 AM
#21
Senior Member
Joined: Jul 2008
Posts: 9,176
Likes: 653
From: Minas Ithil
um 1 gram is 1 gram, 5+5=10.... 390+10=400 .... 400+300=700 etc... I built three bikes one has ultegra with light wheels it’s at 13.5 pounds. The other two have tiagra and are at around 18 pounds.. there’s no magic to it. Every gram adds up and equates to a heavier bike?
Shifters
Ultegra R8000 438g
Tiagra 4700 493g
Caliper brakes
Ultegra 360g
Tiagra 360g
Rear Derrailluer
Ultegra 200g
Tiagra 277g (long cage)
Front derrailluer
Ultegra 106g
Tiagra 106g
Chainset compact
Ultegra 674g
Tiagra 910g
04-30-18 | 09:34 AM
#22
Senior Member
Joined: Feb 2018
Posts: 108
Likes: 0
The difference between Ultegra R8000 and the new Tiagra is 368g. About 3/4lb. Most of that is in the cranks. If I included the cassettes the total difference would be about a pound.
Shifters
Ultegra R8000 438g
Tiagra 4700 493g
Caliper brakes
Ultegra 360g
Tiagra 360g
Rear Derrailluer
Ultegra 200g
Tiagra 277g (long cage)
Front derrailluer
Ultegra 106g
Tiagra 106g
Chainset compact
Ultegra 674g
Tiagra 910g
Shifters
Ultegra R8000 438g
Tiagra 4700 493g
Caliper brakes
Ultegra 360g
Tiagra 360g
Rear Derrailluer
Ultegra 200g
Tiagra 277g (long cage)
Front derrailluer
Ultegra 106g
Tiagra 106g
Chainset compact
Ultegra 674g
Tiagra 910g
04-30-18 | 09:48 AM
#24
Senior Member
Joined: Sep 2007
Posts: 15,308
Likes: 1,779
From: Far beyond the pale horizon.
No one is arguing that heavier things are heavier.
um 1 gram is 1 gram, 5+5=10.... 390+10=400 .... 400+300=700 etc... I built three bikes one has ultegra with light wheels it’s at 13.5 pounds. The other two have tiagra and are at around 18 pounds.. there’s no magic to it. Every gram adds up and equates to a heavier bike?
* The OP was talking about a difference in just the groups (everything else kept the same).
* What real world performance difference is the OP going to see with a difference of < 2 pounds?
* Cost is the part of the equation that you conspicuously left out.
04-30-18 | 10:58 AM
#25
Senior Member
Joined: Jul 2014
Posts: 6,228
Likes: 440
From: Toronto, CANADA
Bikes: ...a few.
Why are we talking about R8000 vs Tiagra? OP asked about Sora vs 105. And both bikes are reasonably priced with their respective groupsets. All else being equal, I'd probably go with the one with 105. At that price, also, you're looking at very much entry-level frames anyway, with allow fork, seatpost, and heavy wheels. Why are we even talking about weight?
