Questions tagged [size]
The size tag has no usage guidance.
106
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Why do most road bike sizes use the same wheel size?
I don't understand why virtually all road bike sizes use the same wheel size. To give an example, the Pinarello Dogma F12 comes in 13 different sizes, and, as one may guess, the smallest is ...
8
votes
3
answers
2k
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I think I chose the wrong road bike size
I went to a local bike shop a couple days ago and picked up a road bike. I think I chose the wrong size. I bought a medium size instead of a small. I’m 5’7 and I feel comfortable during the first two ...
- 101
8
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3
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Which measurements are most important to consider for tall men?
I am 6'8" and 255lbs so my figure is a bit between Kevin Durant (not as skinny) and Lebron (in shape but not as muscly). For smaller bikes such as what you would find in Wal-mart, I frequently see ...
- 83
7
votes
2
answers
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Tire Size Road Bike
I need new tires and not sure what size to order. Here are photos of my bike tires. I see 622x 15, but also see 25mm as a stand alone number. 622-25 seems more likely for my road bike, not sure if ...
- 71
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6
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26 inch or 29 inch wheel for hybrid road bike
I'm 5 foot 1, and I'm stuck between a two bikes one 29 inch wheel and the other 26 inch hybrid bikes (more towards road bike style) for errands around a metropolitan city.
Both bikes have a small ...
- 61
6
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2
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Do I need a chain breaker tool to install a new chain on my bicycle?
Do I need a tool, or will the chain have the correct length? For example, my biggest cog in the rear is 34T and the biggest chainring at the front is 42T and the chain has 116 links. Is a chain with ...
6
votes
1
answer
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Can I replace 700×23C tire with 700×28? [duplicate]
I have Trek 1.1 with currently 700*23C tyres.
I need to replace them but the one available in market are 700*28
Can I use this size as replacement?
If yes, what'll be advantage and disadvantages?
- 163
6
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2
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32-622 tire too small for 622x19 rim?
I recently bought a Mavic A 319 rim with ETRO 622 x 19C and Schwalbe Marathon 28" tire with ETRO 32-622. Based on the tire sizing chart found at Sheldown Brown (https://www.sheldonbrown.com/tire-...
- 305
5
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4
answers
2k
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Can getting a larger sized bike make the bike less aggressive?
Is it practical to get a slightly larger sized bike and thereby make the seat lower relative to the frame in order to make the bike less aggressive? I'm looking at a Specialized Allez road bike and ...
- 1,597
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Shimano STI shifters: do they come in different sizes?
I was sure that there's only one size for Shimano road bike shifters. But now I'm helping a friend to choose a bicycle and it seems that a lot of them have bigger shifters judging by images that I'm ...
- 549
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50cm road bike for 5'8 height
The road bike I'm planning on buying is only available in 49cm and 50cm. Will that be okay given that my height is 5'8/9?
- 345
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Why do the ISO/ETRTO numbers not match the English measure on my Tires?
Given:
A flat tire
Tire size 47-507, 24 x 1.75
I want to replace both the tire and the tube. But in the shop it's only available 44-507, 24 x 1.75.
The tire size of 24 x 1.75 is common to both my ...
- 153
5
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2
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501
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I am 182cm with an inseam length of 82cm. Will Specialized Tarmac road bike size 54 fit?
I am about to invest in a used Specialised Tarmac SL4 but I am unsure whether to go for a size 54 or 56. Been riding a size 58 and found it to be too long for me. Was wondering if I could go for a ...
- 51
4
votes
3
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Frame size: a little too small vs a little too big [duplicate]
The bicycle I want to buy comes in three frame sizes. Each of them has the recommended interval for the rider's height. These intervals do not overlap, and with my height I am right at the boundary ...
- 6,752
4
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3
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Size of old road frames compared to new ones
May I use an old frame (pre 1990) of same size as a modern road frame? For example by using a long stem and long seatpost. Or would I have to size up a lot?
Concrete example: I ride a 56 cm Merida ...
- 9,454
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1
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473
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Help to find the right tyre for my Scott ebike
I bought a bike just over a year ago and towards December I went into my local Halfords looking to replace my tyres and was told that my wheel size (he checked on the tyre that is currently fitted ...
4
votes
1
answer
238
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Suitability of open sided bearings for frame pivots
On a 10 year old bike I am trying to replace miniature frame pivot bearings which measure 9mm x 17mm x 4mm, pictured below, and are sealed with 689z stamped on. They must measure the same dimensions ...
- 12.5k
4
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3
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3k
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Properly sizing a frameset online (Ritchey Road Logic)?
Longtime lurker, first-time poster. My frame is cracked and I have mostly decent parts so I am thinking about just buying a frameset and paying the LBS to move stuff over. A friend suggested I look ...
- 41
4
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1
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the standover height on my bike is a but tall. I can touch the ground, but I touch the top tube as well. Any ideas?
My dad recently bought me a new bike. I am 158 cm tall, and the bike is 53 size frame. I can comfortably ride it (without cleat pedals), but when I stop/finish my ride and try to get off the bike it ...
- 41
3
votes
3
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5k
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How to be certain a Boardman ADV 8.8 would fit without prior road bike experience?
I'm looking to buy my first road bike - an adventure/gravel road bike.
Question: How can I be certain it's okay or not? And should I be looking for a bike that's closer to my estimated frame ...
- 31
3
votes
5
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4k
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Is it safe to ride a small bike?
I just bought a bicycle, and according to the seller, for me, with 180 cm, I need an L size.
But unfortunately, mine is M. I noticed that only when I'm already having the bike.
Can this do me any ...
- 139
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3
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Correct frame size, will 56 and 58cm work?
I'm new to bicycling (I have a 7 speed HEAVY beach cruiser I use for 10-20 mile rides). I am looking into used road bikes now. I checked several places to measure what size frame I should get for a ...
- 31
3
votes
1
answer
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Is this a long or medium cage Shimano XT 10 RD-M786-(S)GS rear derailleur?
Update
Thanks for the replies and comments. I finally managed to compare with a new RD-M786 derailleur, and it's a medium size.
I think this is a Shimano XT 10 RD-M786 rear derailleur
but is it a ...
3
votes
2
answers
2k
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How to determine which size spoke wrench I should buy?
I was advised to use a dedicated spoke wrench (not multitool) when possible, so I am looking to order one online. How can I determine which size I need before ordering it?
I do have a multitool with ...
- 778
3
votes
1
answer
130
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Bolt size for Sora BL-3500 flat bar brake lever
I purchased a pair of Sora BL-3500 brake levers second hand. These were sold without handlebar clamp bolts. I optimistically thought I could re-use the ones from my old mid 1990's Shimano brake ...
- 1,412
3
votes
3
answers
131
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What road bike size to get?
I am very new to road bikes and have decided to buy one. The problem is both shops I have gone to said I should get a 54cm frame, even though I'm only 5'5. This seems to go against a lot of online ...
- 31
3
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2
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399
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Which new road bikes can have seat height 890mm or more?
I'm looking for a new aero road bike. I'm a tall person. And from past experiences and from bike-fiting advices I need a seat height of around 890-895mm.
I checked Cannondale, BMC, Factor, Orbea. They ...
- 153
3
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2
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457
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Do Shimano MTB shoes in half-sizes make a perceptible comfort difference?
My 10+ year old MTB shoes are finally dying. I'm looking for replacements.
My shoe size is usually 7 UK (42 EU) for the left foot and 7.5 UK (43) for the right. I see Shimano do European half sizes ...
- 1,452
3
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1
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Are my cycling shoes too big? With 3/4 inch of room
My shoes came in the mail and I have about 3/4 inch of room to the end. On a short ride I didn’t notice any slipping when I had the boa tightened all the way up. I also don’t have any hotspots or ...
3
votes
2
answers
393
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Should I buy a little bit bigger bike?
I want to buy a mountain bike for the summer to ride with my friends, go on shorter rides (max 6 hours) and use in town. I am approximately 175 cm tall and 16 years old (so I might grow a bit). My ...
- 31
2
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2
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Wheel size: 650 to 700
I have a Trek Speed concept series 7 frame size XS triathlon bike which is fitted with 650 size wheels. However I was wondering if I could at all put 700 wheels/tyres on, as when I brought it 2nd hand ...
- 21
2
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3
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12k
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Bike Frame Size for MTB Leisure Rides
I am looking to buy a bike for my wife on the internet, but the challenge is I do not know what frame will be most suitable for her.
We plan to buy a hardtail for leisure rides on the weekends so we ...
- 165
2
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2
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How to determine tire size when the sidewall label is unreadable?
I have a women's Mongoose hybrid bike that is older. The tires are dry rotted and I can't read the tire size info.
How do I determine what size replacements to buy?
- 21
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1
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342
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Do tubed tires fit all rims, or is there anything I should watch out for?
My bicycle is about 25 years old and for the past decade has been sitting out on my balcony (dry, but outside temperature, which around here means from -15°C to +40°C or so). Lately I've been thinking ...
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2
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3
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5k
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Can I ride a big bike?
I am a MTB beginner and I just bought a used Giant stance 2. I knew from the beginning the bike is bigger than I should have, but it was a good deal. The bike frame is XL and I am 6’. Based on Giant ...
2
votes
1
answer
217
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What tire and air chamber should I buy for 650x35B - 26x1 1/2?
I got an old bike an the tires are all crumbling so I need to change them.
I'm new to changing tires but I know I need to look for the model that on the current tires it is "650x35B - 26x1 1/2&...
- 23
2
votes
2
answers
1k
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Which size SKS Bluemels will fit my frame - 35, 42, 45?
I'm thinking of getting full mudguards for my road bike, the Triban RC 520 , (details here)
, and the manufacturer's page tells me that it comes with 700 x 28 tires and the frame is compatible with ...
- 322
2
votes
1
answer
260
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Is the use of wide fatbike tires problematic with 100mm BSA bottom brackets?
Fatbike frames typically come with 100mm or 120mm BSA BBs. Does the 120mm BB help anything, though? For example, if I have a 100mm bottom bracket and a 5" tire on a 100mm rim, and I switch to the ...
- 1,047
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1
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692
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Replacing bike frame on BMC Alpenchallenge AC01
I have a BMC Alpenchallenge AC01 IGH Alfine 8 Speed 2017 size small. Although the size is appropriate for me, I would prefer the medium, but the small was 47% off, so I bought it.
Now I have the ...
- 21
2
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1
answer
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Does a hybrid or mountain bike with a 24" diameter rim use a 24" tube and 24" tire?
I tried to search this at length but I have not found an answer. Should a bigger size be gotten or am I over thinking this?
- 121
2
votes
1
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Spacing for the front wheel on GT Agressor
I'm thinking about purchasing the NUKEPROOF HORIZON V2 FRONT WHEEL or Spank 359 vibrocore both 27.5. I'm just wondering the best wheelset for my bike and what would fit. I had an accident and my rim ...
2
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1
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Can I fit a 32-622 tire on a 32-630 rim?
Can I fit a 32-622 tire on a 32-630 rim?
The tire diameter is 8 mm smaller than the rim, so it's going to be tight - but will it fit with some extra force, and might there be any other problems?
- 23
2
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2
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Increase saddle height
I tried the Xiaomi qicycle electric folding bike and I really liked it.
The only problem is its size. I already know how to raise the handlebar, but I'm not sure how to raise the seat. It should be ...
- 123
2
votes
1
answer
101
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Differing tire sizes on tread and side wall
While working on my bike the other day, I noticed that there's what appears to be a tire size on the tread. It says 27.5x2.35
Thing is ... this is a 29 inch tire. It also says so on the side wall, ...
- 121
2
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2
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Need assistance identifying new wheel options for Araya VP-20 26x1.5 ETRTO 559
This is very similar to the question answered for "Need assistance identifying new tire options for Fuji 4130" (by 0-Biker) and answered by "Argenti Apparatus" but I couldn't add a ...
- 21
2
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2
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127
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Is cyclocross tire (CX) taller than normal road bike's?
According to the specialized website, the 54cm crux 2021 comes with 700x33c cx tires.
https://www.specialized.com/us/en/s-works-crux/p/171342?color=271648-171342&searchText=91420-0046
And, its bb ...
- 344
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3
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Tire size conversion from 700 x 23c
A tire with the size of 700 x 23c, when changed to inches, what is the diameter and what is the width?
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Can I fit 27x 1 1/4 tires on a 622x14 rim?
I have an old 60s (I believe) Schwinn Suburban that has no tires. I looked up what size tires to get and found 27x 1 1/4 as the match. I just recently scored a set of 622x14 rims. Could I fit the 27x ...
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585
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Is my hybrid bike too big for me?
I just bought a secondhand Raleigh C40 hybrid off Facebook. It generally seemed like a good bike but I'm definitely a bicycle noob. The lady who sold it to me was maybe an inch taller than me. I didn'...
- 11
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vote
2
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I am 1.7 m tall and bought a MTB with a frame that is 3-5 cm too big
The frame is 5 cm too big for me (in the length from seat to handles). I have major discomfort in my shoulders. After getting a shorter stem, the shoulders are 95% improved, but the "jewels" go dead ...
- 11