The outer edge of a wheel, holding the tire.

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29
votes
9answers
100k views

How to get a very tight tire back on the rim?

I needed to change the tube as a consequence of a flat tire and I am in the situation that it's just impossible to put the tire back on the rim. In almost ten years of experience with road bikes and ...
25
votes
8answers
14k views

Can your rims wear down from too much braking?

I have a question about rims based on information in another question. The person asking states that he doesn't want his rims wearing down. Is this really a problem? Assuming you don't wear the ...
22
votes
1answer
667 views

'safety dot' on rims

My Araya GP-710 rims have a sticker that says 'safety dot' with arrows that point to little dimples in the rim -what are they for ? Dimple not visible in pic, but are on the rim
16
votes
4answers
14k views

Should inner tube have excess length?

I've recently changed the default 700x35 tires and 35mm Schrader inner tube to 700x25 slicks with 25mm Presta inner tubes. However whilst fitting the new tire and inner tube, I noticed that the inner ...
13
votes
4answers
10k views

700 wheels on bike made for 27" wheels

I just bought an older road bike with 27" wheels. I am curious if I can mount 700 wheels (typical road size) on it. Has anyone ever done this? The main reason I am interested in doing this is so ...
11
votes
2answers
10k views

Spokes loose on a new wheel, is this expected or a bad build?

So a couple of months ago, I bought a new front wheel from the local bike shop. It's a 28 spoke wheel, rims are the DT Swiss RR465 and the hub is a 240s. I put 500-600 km on it and noticed a rattle ...
10
votes
4answers
52k views

Can I put 700c tires on rims made for 27 x 1.25"?

It's getting hard to find any selection for my old Avanti 12 speed. it currently uses 27 x 1.25 inch tires. Can I put 700c tires without needing to buy new rims?
10
votes
4answers
4k views

Enhancing brake force with steel rims in wet conditions?

I currently own an old racing bike, that still has ripped steel rims and a side pull caliper brake. The braking power is acceptable when the street is dry, but as soon as it gets wet (even morning dew)...
10
votes
1answer
6k views

Why should I choose 36 or 32 spokes (or another number)?

I have to change the rims of my bike and I have to choose between 32 or 36 (or 48 or any other variation). I never thought about this until now and I feel it's kind of a dumb question, but I don't ...
9
votes
3answers
3k views

Tire slips off the rim when inflated to 8bar

I bought new wheels for my roadbike (shimano wh-rs80 which have c24 alu/carbon rims). I was mounting tires on them yesterday and inflated them to 8 bar (~116 psi). After a few moments (30 seconds or ...
9
votes
5answers
25k views

Deep-Profile Carbon Wheels — How to choose depth?

I'm doing research for a future purchase of new wheels (for everyday riding) for a 2012 Cannondale CAAD10 Ultegra. I want to spend ~$1000 (give or take $200 or so). In my price range I've found: Boyd ...
9
votes
1answer
396 views

Best downhill braking method to avoid overheated rims?

I recently had one of my rims get really hot on a downhill. I had a problem with my front brake, and I had to use my rear brake only... I did short, hard stabs instead of lightly dragging it. I ...
8
votes
4answers
665 views

How seriously should I take the maximum pressure rating of my cyclocross rims?

I own a very nice cyclocross bike that I use for daily commuting. It is currently fitted with relatively wide cyclocross tires (Continental Cyclocross Race 35-622) that I inflate to 4 bar (58 psi). ...
8
votes
2answers
95 views

putting a presta stem nut inside the rim?

Has anyone ever heard of this? I'm not sure how it happened, but when i went to replace my tire today, I found that I had two stem lock nuts on my valve. One inside the rim and one in the normal place....
8
votes
5answers
761 views

Replace rim because of 4 broken spokes?

When replacing the rear brake pads I noticed that 4 spokes were broken and the wheel wobbles. I phoned a local bike shop and was told that they recommend replacing the wheel if more than 3 spokes are ...
8
votes
4answers
400 views

Bike pulses while applying the front brake. I'm unsure what the cause is

Once per rotation of the front wheel, when braking, the bike pulses under me. The brakes are calliper rim brakes. Swapping wheels out fixes the problem - so it is definitely wheel related The wheel ...
7
votes
5answers
10k views

Schrader tubes in Presta configured Rims?

My 26" mtb rims support presta sized tube stems, however can I drill the diameter of the holes in the rims bigger in order to support Schrader stemmed tubes? what is the proper way to do this, is ...
7
votes
3answers
4k views

Are deep rims more durable for a heavy rider?

Since I weigh quite a lot (~115kg), and ride on bad roads with many holes and cracks, I am looking for rims that would be able to cope with bad conditions without getting out of true or breaking. My ...
7
votes
3answers
3k views

Do aluminum rims provide better braking than steel ones when wet?

When I upgraded the brakes on my bicycle recently, the shop asked if I wanted to also switch from my (chromed) steel rims to aluminum rims, saying the aluminum rims would provide better braking power. ...
7
votes
11answers
12k views

What should I use, VeloPlugs, Rim Tape, or Rubber Rim Strips in new wheels?

I'm building two new sets of mountain bike 26" wheels, and I'm wondering what to go with. Both are double walled rims, so in addition to the standard rim tape and strips, I can use a product like ...
7
votes
1answer
452 views

What does triple-hollow construction mean?

I've got a set of Sun Rhynolyte rims and in the features it says they have a triple-hollow construction. What does that mean?
7
votes
3answers
7k views

What is the widest tyre that you can get away with, on a standard road bike?

In general, what is the widest tyre that you can get away with, on a standard road bike (with dual pivot brakes)? Edit: I have a Campagnolo Eurus wheelset.
6
votes
6answers
998 views

How to build a wheel

I'm in the planning stage of building a new bike. This will be a light road bike for city runs and transport. For racing I have other bikes. I'd like to build the bike from ground up by assembling ...
6
votes
2answers
2k views

Re-painting Rims

Over time, the paint on the rims of a wheel has slowly been eaten by a set of brake pads. How do I strip left over paint? What type of paint should be used? How can I ensure the new paintjob will ...
6
votes
1answer
63 views

What does welded and machined mean?

I've got some Sun Rhynolyte rims and one of the features is being welded and machined. What does it mean when said in relation to a rim?
6
votes
1answer
4k views

Fixing damage to brake rim surface

somehow the alloy braking surface of my rear wheel's rim has got a series of quite shallow lacerations, less than a mil' deep bunched quite closely together (the effected area is no more than 1/8 of ...
6
votes
2answers
4k views

How can I tell if my wheels need replacing due to rim wear?

I have v-brakes which have started to groove my rims. What is the surest way to know if they need replacing?
5
votes
5answers
1k views

Do we really need another bike size?

OK, this is a rhetorical question that deserves to be closed as "opinion based", but gotta ask. Why do we need to have "27.5 inch" bikes? If you dig through the specs (they don't come right out and ...
5
votes
2answers
183 views

Inner tube blows up due to rim holes

I've decided to cycle to work and got myself a new bike. When the bike arrived I inflated the tyres to 80psi (20 below recommended) using a track pump. Instantly the inner tube blew up. I thought the ...
5
votes
3answers
4k views

Retrieving Loose Nipple from Inside Rim

So I have a wheelset that I really like, only problem is the first time I rode the wheels a nipple came off the spoke when I launched off a speed bump going downhill. For a long time it was silent (...
5
votes
2answers
12k views

Can I convert hybrid to mountain bike. Tyres and tubes?

I have a mountain bike looking frame with wheels that currently have road tyres. The bike is classified as a hybrid. My tyres state: 28" x 1.6 (42-622) The rim: ETRTO 622 x 18 I am having ...
5
votes
1answer
346 views

Increasing the size of tyres on a hybrid

We are planning on doing some mountain biking in a few weeks time and we'd like to get some wider tyres for my wife's hybrid. I know there are similar questions and answers out there on this topic, ...
5
votes
6answers
6k views

What are the consequences of riding a bicycle tire backwards?

When putting a new tire on a bicycle, there is usually a note somewhere on the sidewall showing the direction the tire is supposed to rotate when you are on the bicycle. However, the last time I ...
5
votes
2answers
219 views

Is this rim safe?

The rim has a parting at the join: This is a brand new wheel, and I was wondering if this is a safe one. Could it split at the join?
5
votes
3answers
4k views

Can I run rim brakes on a disc rim?

I'm trying to buy a front wheel which will work with both disc and rim brakes so that I can use it on my cross bike (with rim brakes) and my mountain bike (with disc brakes) with a dynamo hub to power ...
5
votes
1answer
1k views

Buying slicks for a cross bike

The whole rim/tire size thing baffles me. I have a Specialized cross bike that has DT Swiss rims (622x 14). The tires are Tracer Sport (700 x 33). I would like to get a pair of slicks for longer road ...
5
votes
2answers
1k views

Will Slick Tires Work for a Mountain Bike Ridden by a Heavier Rider?

I've owned a Trek 3500 bike (shown below) for 2.5 years now and I like it very much. My bike has the same specs as under the link. It has the XL frame size and 26" wheels with Bontrager AT-550 36-...
5
votes
1answer
1k views

Is the max pressure on tubeless rims specifically for tubeless, or do they apply to tubed tires too?

I have a set of ZTR Rapid rims that are tubeless compatible, but I never run tubeless tires on them. They have this list of maximum pressures on the side of the rim: Since the limits are dependent ...
5
votes
1answer
4k views

How to choose rim strip width?

After referencing How do I know which size and type of rim strip to buy? I still couldn't use any of the answers to identify the correct width of rim tape to choose. Velox tape comes in narrow (...
4
votes
2answers
117 views

Have I damaged my tyres?

I noticed after mounting some new tyres that part of the side wall, just above the bead, seems to have been damaged while I was fitting them (see photos below). These tyres were especially difficult ...
4
votes
1answer
68 views

Rim dish and flange angle problem

this is the n-th time I have faced with this problem. The problem is than one flange of the rim is higher than another one. As you can see on the photo. My rim is new this time, I have dynamo hub....
4
votes
1answer
530 views

Inflated tire partially slipped off rim, can I fix without deflating?

There is a ~3" portion of my back tire that is no longer within the rim walls on one side. It's an older bike but in fairly good condition. The tires had just been replaced by a professional and I put ...
4
votes
2answers
16k views

How do I know if I can replace the 27 inch wheels with 700c wheels on my bike?

I recently purchased an 80's Japanese bike off craigslist called "Jupiter King." It has 27 inch tires but I want to switch to 700c for greater wheel/tire selection. I specifically want some nice ...
4
votes
3answers
4k views

Why does my back wheel keep becoming untrue?

So I broke a spoke a week ago, and when I put a new spoke in you know I trued it. Now, a week later, the bike feels like a kayak, because the back wheel is not very straight. Any idea why this would ...
4
votes
2answers
133 views

Replaced v-brake pads too late - how to check if rim is damaged?

I've just noticed that replacing the brake pads was overdue. The metal of the brake shoe started scratching the rim already some time probably (sorry, I know it hurts to read that...). How to decide ...
4
votes
3answers
4k views

Are 700x 28 x 32 x 35 tires interchangeable?

I have a cyclocross bike with Alex ATD 470 Disc rim with TCS (Tubeless Compatible System) currently mounted with Vittoria, Cross XN, 700 x 32c tires. However tires are a bit worn out and I want to be ...
4
votes
2answers
2k views

Hookless rim benefits

I'm in a market for new 700c road wheels and noticed that, in addition to usual clincher and tubular, some companies sell rims in hookless variant. They don't seem to be significantly lighter compared ...
4
votes
2answers
214 views

Are these steel rims safe?

I recently bought an old Eastman ten-speed. It's got 700x23 tires on steel rims. The walls of both rims bend out slightly, maybe 10 degrees each. I'm not sure if they were built that way, or if they'...
4
votes
1answer
149 views

Tubeless tire looses air through weld of rim

I have the DT Swiss X1700 Spline 29″ with the Schwalbe RockRazor 2.35" PaceStar on my pre built Bike which are tubeless. After about 100 km the tire now looses air through the weld very fast. I ...
4
votes
3answers
616 views

New Trek 1.5 wheels need to be trued after 2 rides, normal?

I took my new Trek 1.5 out for 2 spins after I got it and the front wheel is running a few mm off true. The back is too but it isn't that bad. I rode it approx 35km. I stupidly didn't check the ...