Questions tagged [rims]

The outer edge of a wheel, holding the tire.

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54
votes
11answers
233k 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 ...
33
votes
8answers
25k 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
964 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
21
votes
3answers
8k views

How dangerous are my worn rims?

I took my bike for a service recently and was told it needed so many repairs that it was more cost effective for me to replace it. One of the repair jobs was to replace the wheels due to worn rims. ...
20
votes
9answers
8k views

I have a 2nd broken spoke after 300km on a new bike, is it the wheel or me?

I am new to riding. I rode as a kid but stopped for many years. My Physio recommended riding after a leg injury while running, so I went down to the local bike shop and brought a new bike. I am now ...
20
votes
2answers
3k views

Is this rim still safe to use?

I bought it this way without the seller noting the issue, so experience from riding with these is zero. Rims are Ritchey Girder OCRs. The crack is pretty small, but noticeable, and I will be running ...
20
votes
4answers
56k 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 ...
18
votes
5answers
143k 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?
14
votes
4answers
2k views

When is a bike rim beyond repair?

Short version of question: If a rim becomes bent due to a loose or broken spoke, is there a general rule for determining when the rim is beyond repair? Long version: I bought a roughly $500 (US) ...
14
votes
4answers
16k 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 ...
13
votes
8answers
44k 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 ...
13
votes
5answers
4k views

How to clean rim brake track efficiently?

What are the most efficient and effective ways to clean brake tracks on rims? It is generally understood that rim brakes work better and pads last longer on clean brake tracks. Dirt on brake tracks ...
13
votes
6answers
9k 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). ...
13
votes
1answer
2k views

What's the purpose of the channel in the brake track of this rim?

What's the channel in the brake track of this rim for? (I think it's in the brake track, anyway, and that the brake pad would cover it.) I would have thought it better to have an unchanneled surface ...
13
votes
2answers
22k 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 ...
12
votes
5answers
4k views

Is it safe to ride on cracked carbon rims (Zipp 404 Firecrest 2010 edition)?

I've got a set of Zipp Firecrest 404 Tubulars (2010). I went over a pothole recently but did not crash. It was a pretty big pothole. After going over the pothole, I heard a rubbing sound from the ...
12
votes
8answers
46k 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 ...
12
votes
4answers
9k 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)...
12
votes
2answers
23k 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 ...
11
votes
11answers
22k 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 ...
11
votes
5answers
13k 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 ...
10
votes
3answers
2k views

What is this aluminum plate that started rattling inside my Ksyrium rims?

During my last ride I noticed a rattle coming from the rear wheel at slow speeds. I removed the wheel but shaking and rotating it did no good. After some head scratching I thought about inserting ...
10
votes
5answers
47k 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 ...
10
votes
3answers
5k 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. ...
10
votes
3answers
7k 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 ...
10
votes
2answers
2k views

How thin/worn out can you allow road bike rims to get?

My mechanic measured the rim off my front wheel to be 0.8mm thick and recommended to get a new wheel. How thin can a rim get until it gets very dangerous to keep riding it?
10
votes
4answers
1k views

Questions about cracks in my rim

I see lots of previous questions about cracks in rims, but most of them (1, 2, 3, 4) turned out to be the rim seam. I don't really see the following type of damage discussed in detail with pictures. I ...
9
votes
2answers
1k views

Crack in aluminium rim?

I recently discovered this horizontal line on my double walled aluminium rim (Triban road bike), pics attached, and was wondering if this was a crack or just a manufacturing artifact. Could anyone ...
9
votes
7answers
1k 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 ...
9
votes
3answers
6k 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 ...
9
votes
5answers
18k 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 (...
9
votes
1answer
268 views

Is this aluminium rim saveable?

I have an 8 inch rear wheel off an adult scooter. It appears to have suffered crush damage - at a guess someone's driven a car over the wheel while on its side. The bend is smooth and covers perhaps ...
9
votes
1answer
5k 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
5answers
3k views

Is My Rim Cracked?

Is my rim cracked? Do I need to replace my rim? Do I need to replace my wheel? (See left/first picture). If either 2 or 3 is Yes, what's the most frugal way to go about it? Notes This is the rear rim....
8
votes
5answers
5k views

Rear Tyre torn at rim - what was the cause?

I had a blowout the other day. On investigation, it was a C-shaped cut in the tube. It patched okay and on reinstalling I found this culprit : The tyre is not new but its not old either - plenty of ...
8
votes
4answers
51k 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 ...
8
votes
1answer
584 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?
8
votes
3answers
11k 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.
8
votes
3answers
688 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
3answers
81k views

Are 700 x 28 , 700 x 32 and 700 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 ...
8
votes
3answers
2k views

What happened to double eyelets?

Whenever I talk with old wrenches about wheelbuilding, they always seem to talk about double eyeleted rims as the pinnacle of strength and quality. However, it seems most modern, high-end rims have no ...
8
votes
2answers
261 views

What makes a comfortable wheel?

I rode about 5000Km on Mavic Ksyrium Elite Wheels and changed them for inexpensive Prime race wheels. The difference in ride comfort is huge. The Mavic wheels provide a very harsh ride. The prime ...
7
votes
4answers
781 views

Blowout on rear rim

Today while riding, my rear brakes locked up. While investigating, the rear tire blew up causing part of the rim on one side to split off. The tech at the shop said the brakes had worn through the rim....
7
votes
4answers
3k views

Is there a trick to inflating a flat tire with deep section rims?

I have a Schwinn floor air pump and its nozzle is the kind you push down and flip up the lever to connect. With a brand new inner tube installed I could not get it to connect with the valve as I have ...
7
votes
2answers
4k 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 ...
7
votes
5answers
2k views

Cracked rim around the spoke

I purchased a pair of Carrera Vendetta wheels, 27.5" with 2.8" tyres. I found a couple cracks where the spoke sits around the back rim. Is it okay to ride or is it okay to weld them?
7
votes
4answers
1k views

Should I seal the open spoke holes on my front rim?

I have a 16 spoke front wheel on my road bike. The hub is an oddball Shimano one with 16 big nipples at the hub end instead of the rim end. This wheel also has a 32 hole aluminium/aluminum rim: I ...
7
votes
1answer
1k views

Rim cracks on spoke adjustment holes, how much should I panic?

So I have a RODi Rims SKORPION rim and I've noticed that there are cracks on the holes for spoke adjustment. They all appear to be on the left side of the bicycle and I'm not sure if they were here ...
7
votes
2answers
2k views

Has this rim strip expired?

I have 2 unused rim strips. Along the edges and on the surface there are brown marks (patches, streaks, blotches). 2 images (I cannot improve the resolution) Observations Both strips were stored ...
7
votes
4answers
2k 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 ...

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