The rubber attached to the rim of your wheel. Flats, changing tires, selecting tires, etc.

learn more… | top users | synonyms (3)

46
votes
14answers
38k views

What are advantages and disadvantages of CO2 inflators over frame pumps?

I have a frame pump that I've used on the road when replacing flats, but I always see CO2 inflators advertised at bike shops. Are they worthwhile for the potential weight savings?
36
votes
12answers
14k views

What are the disadvantages of “puncture proof” (or puncture resistant) tires?

Some people refer to tires that are more resistant to punctures as "puncture proof" tires. For example: Specialized All Condition Armadillo Tyre Even though these tires are not really puncture proof, ...
23
votes
7answers
58k views

How can I check tire pressure without a pressure gauge?

I would like to tell if my tires are correctly inflated, in this case road tires, but I do not have a pressure gauge. Is there a handy heuristic for checking the pressure? Could I do it, for example, ...
10
votes
4answers
47k 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?
8
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 ...
7
votes
4answers
6k views

How much should I inflate my tires?

I just purchased a new bicycle pump with a pressure gauge and after checking my tyres, inflated them to the top end of interval printed on the tyres (4.5-6.5 bar). I'm wondering when the tyres ...
24
votes
7answers
29k views

Am I too heavy for my road bike tires?

I am wondering if bike tires have a weight limit. I have to admit, I am a large guy at 6'3" 250lb (190 cm, 113,5 kg), and I have always had issues with my road bike's tires getting pinch flats. I ...
14
votes
2answers
969 views

Should spoke tension be measured before or after adding a tube and tire?

I built my first set of wheels and measured the spoke tension when I finished. They were all uniformly tense at about 100kg of force. Once I put the tire on, that measurement went down a little, to ...
12
votes
3answers
4k views

Is it safe to ride on an unevenly bulging tyre?

Most of the tyre looks fine, true and straight but the section photographed shows bulging. The rim itself is true, is this safe to ride on?
8
votes
4answers
2k views

Why does my back tyre wear so much more quickly than the front?

Identical tyres, identical rims, minimal braking on the back wheel, no skids, properly inflated at least once a fortnight to manufacturer's recommended pressure. Why does the back one wear out more ...
8
votes
4answers
1k views

Studded tires for small wheels

I'd it possible to purchase 16" studded tires? I have an old Dahon I use as a winter bike, and I'd like to replace the tires with proper snow tires if this is possible. If not, has anyone here ...
5
votes
4answers
504 views

Schwalbe Marathon Plus recurring puncture - options?

Does anyone have any experience of using puncture resistant tyres when they have been cut so badly as the object pierces the tyre right through? Being Mr. Unlucky, 2-3 months ago I managed to get a ...
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 ...
4
votes
3answers
966 views

Is it normal to wear out the rear tire with in a few months when using a trainer?

Early this year I attached my bicycle to a trainer, around the December time frame of 2011. The rear tire and inner tuber where shot by March of 2012. Riding about 24 Miles per week. Is this normal ...
0
votes
4answers
216 views

How much of a bruising can a MTB take?

I recently purchased my first MTB, a Rockrider 560, and I'm curious to know how much a roughing up can it take? For example, can I ride up and off kerbs without wrecking the tires? What about bunny ...
21
votes
4answers
6k views

Is there a difference in having tires filled with CO₂ vs air?

When you fill your tire with a CO₂ cartridge you are obviously putting CO₂ into it. When you use a pump you are putting air into it. Are there significant temperature variations that may lead to poor ...
16
votes
5answers
9k views

Should I put my wider tire in front or in back?

My used bike came with a 700x28 tire in front and a 700x23 tire in back. Should I leave the wider tire in front, or should I switch the tires? What benefits or drawbacks are there one way or the ...
13
votes
6answers
17k views

How do I know which size and type of rim strip to buy?

I have a Gary Fisher mountain bike. I was changing the tube in my rear tire. The rim strip (rubber lining around the wheel to protect the tube from the spokes) had moved a bit so I went to adjust it ...
12
votes
4answers
7k views

How tight should my front quick release lever be?

I'm referring to my first new bike front Tyre/quick release lever as shown. The picture is picked from Internet How can I know whether I have locked my front QR lever correctly? Neither too tight ...
9
votes
10answers
5k views

Any alternative use for old mountain bike tyres and inner tube?

I have recently changed the original tyres and inner tube of my 15 year old Specialized Rockhopper. They were starting to deteriorate and I got punctures almost every time I took it on gravel paths. ...
9
votes
5answers
639 views

Is a tire patch kit really necessary for urban commute?

I'm cycling for urban commute, on well-maintained roads and bike paths, Vittoria Randonneur "puncture resistant" tires, and at no point on my ride am I more than 1/2 mile (usually within 1/4, I bet) ...
8
votes
1answer
2k views

Do narrow tires puncture more frequently?

Does a narrow bicycle tire puncture more often, or does it requires more attention regarding its maintenance and servicing?
8
votes
7answers
18k views

Can you run a standard tyre on a tubeless rim?

I have some new tubeless MTB rims and I'd like to avoid buying new tyres for them. The tyres are reasonably sturdy (Continental Race King Protection - 4 plies / total 240tpi) and I have sealant. As I ...
8
votes
6answers
17k views

What road bike tire pressure is best for speed?

Is the maximum tire pressure always the fastest on a road bike? I've seen the Michelin chart on tire pressure from another question ("What pressure should I run my Road Bike tyres at?"), but they ...
8
votes
5answers
335 views

How do you deal with flats in the winter?

I was lucky last winter I went the entire winter without getting a flat. I attribute it mostly to: sharp items on the road being hidden under snow and ice less agressive riding resulting in no ...
7
votes
8answers
494 views

Mystery flat keeps happening 3-5 times a week. Do I weigh too much for my tires?

This is a little embarrassing, so I hope no one makes fun of me lol ... But I am a big girl. I always have been. Very big frame, big shoulders, big head, hands and feet. My whole life I've been ...
7
votes
1answer
2k views

Can 37-622 tyres replace 32-622 tyres?

I used my old Trek mountain bike last winter (Helsinki, down to -25C, lots of snow) for commuting to work (8km each way, roads) but it probably needs too many repairs to be worthwhile. I got a new ...
7
votes
5answers
19k views

Choosing good slick tires for a MTB

I have an MTB with tires that roll very badly on pavement because of plastic spikes. I'm looking to get a pair of slicks and I'm hoping to get some advice here. My bike is a 29", I think they current ...
6
votes
3answers
3k views

Metal or plastic levers?

What are the advantages of buying plastic over metal tire levers? (or vice versa). Which ones are easier to use?
6
votes
1answer
732 views

Is there a way to estimate contact patch size given tire size plus tire volume and rider weight?

Is there a way to estimate contact patch size given tire size plus tire volume and rider weight? Specifically, I've tried to build a unicycle that maximizes contact patch for riding on soft snow. I ...
6
votes
3answers
1k views

Looking for orange tyres

I'm looking for a pair of folding, orange training tires, size should be 700x23C. I'd like to have only an orange stripe, not the whole tire. Can you recommend some model?
5
votes
2answers
551 views

At what slope will the best bikes keep a constant speed?

At what slope will the best bikers (in terms of aerodynamics) on the best bikes roll at a constant speed at 80 km/h on an asphalt surface on a dry day? The reason for this question is because it gives ...
5
votes
1answer
3k views

Flat tire: white liquid inside the tube

I got a flat tire, kind of a big hole in the inner tube. It was raining a lot so I walked home through the rain and water puddles, and everything got wet. Now I want to patch the inner tube, but ...
5
votes
3answers
2k views

What caused diagonal cuts in the sidewalls of my tire?

I noticed some strange damage on my rear tire, where there appear to be diagonally cuts going around the entire wheel. I have no idea what might have caused this damage. I first saw it a few months ...
4
votes
1answer
303 views

What's the cause of this tyre cut?

I am using Schwalbe lugano 700*25C for commuting, it's a almost brand new tyre with less than 500km. Recently I am starting to find some cuts around 1cm on my the tyre thread. Does anyone know what's ...
4
votes
4answers
98 views

Front tire/disc brake question

Is it normal my disc rubbing with no tightened QR and to stop when I tighten it? Or it should not rubbing both times...?(Because now when I tighten the QR the disc starts rubbing in one of the pads. ...
4
votes
1answer
828 views

Homemade Tubeless Tires

As I was browsing Youtube for cycling related videos, this one on making your own tubeless setup caught my eye. The procedure is essentially as follows: Clean a standard rim (not for tubeless ...
4
votes
4answers
1k views

Is there a way to fill your tires with nitrogen?

I know this is a rather controversial issue. I was skeptical as well before doing this on my car, and I have not refilled my car tires for several months. Before that I needed to adjust the pressure ...
4
votes
3answers
628 views

Do tires with worn sidewalls need to be replaced?

My bike needs a bit of a tune up, particularly the tires since the back tube has a hole in it. The rims on the bike are 26"x1.5" and the current tires are 26"x2" and both have great tread, but the ...
4
votes
2answers
2k views

Can outer tyre (casing) punctures/cuts be fixed?

My flatmate got his tyre stabbed. With a knife, it seems. (The bike was tied to a staircase railing in the building and was obviously in some maniac's way. Though there was plenty of room around. And ...
4
votes
2answers
419 views

What's the shelf life of tublar tires?

I have a set of tubular Continental Sprinter Gatorskin (28" x 22mm) that have been sitting in the box on the floor for close to four years. They look fine, but I'm worried that they won't last long ...
3
votes
1answer
1k views

Why are tires that fit 622mm wheels called 700C [duplicate]

where does the 700 come from and what does the C stand for in 700c?
3
votes
1answer
2k views

Sudden tyre deflation with no puncture

At the start of my ride yesterday I was passing through town slowly and crossed a section of cobble stones (just a line running across the tarmac). I managed to hit the one cobble sticking out of the ...
3
votes
5answers
3k views

How much does rider weight increase tire pressure?

When a person sits on a bike, the air pressure in the tires must go up because of the additional weight. With 100 PSI in 700x23 tires on a riderless bike, what is the air pressure when a 100 lb rider ...
3
votes
2answers
2k views

Can I damage a tubeless rim using a wire bead tire on it?

This question is very similar to Can I use a standard tyre on a tubeless rim? but while the answers there set out that it's possible I'd like to understand the risks of doing it. I recently saw a ...
3
votes
4answers
4k views

Will a 650x23 tire fit on my 26" rim?

I have an MTB that I have been riding in the city for many years. As such, slick tires suit me well and I have been using a set of 26x1.25 tires for the last 3-5 years but they are starting to show ...
3
votes
1answer
4k views

Why does a decimal sized 26“ tire fit my rims but a fractional sized 26” tire doesn't?

I'm replacing some 26 x 2.10" mountain bike tires that I have on my bike with some thinner 26 x 1 3/8" road bike tires for commuting, however somehow even though they both say that they are 26" the ...
3
votes
4answers
578 views

Gash where valve meets tire tube; How could this happen, and can I fix it?

I'm fairly new to bicycling; apologies if this is a standard question but I couldn't figure out how to phrase it to search for it elsewhere. I ride a KHS Urban-X with Kenda Kwest tires (just what it ...
2
votes
1answer
79 views

What should I look for in a new front wheel for my heavy body?

I broke my second front wheel last night when I hit a dip that rose too quickly on the far side. The wheel didn't get a chance to redirect the force upward before all my weight went behind it. I'm a ...
2
votes
2answers
874 views

Is a fatter tire likely to get fewer flats

Everything else equal is a fatter tire likely to get fewer flats Actually misread another question Is a bigger wheel likely to get fewer flats? So I am posting this question to match my answer