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

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26
votes
12answers
130k views

What pressure should I run my Road Bike tyres at?

There's a question for mountain bike tyres but I can't seem to find anything on here for road bikes. At the moment I'm running at around 90psi. Is that too much? too little? Also, am I more likely to ...
8
votes
3answers
2k views

How are tire sizes measured?

I tried getting a good measurement with my caliper, but the flexibility of the tire doesn't help much. Let's say I have a 26"x2.125" tire. I know this fits on an ISO 559mm bead seat diameter rim, and ...
44
votes
13answers
17k views

What type of tires can prevent goatheads?

We have a lot of goatheads1 in our area, and they have a tendency to do something like this to bike tires: Unfortunately, I ride a road bike (specifically a Kona Dew), so I have much smaller, ...
25
votes
8answers
50k views

What pressure should I run my Mountain Bike tires at?

Should I run my mountain bike at the suggested PSI/Bar on the tire/rim? Or should I run it a bit lower? Or is it more about conditions? Should I run lower if I am running on softer terrain?
32
votes
4answers
35k views

How do I know when to replace my tires?

The treads on my road bike's 28C tires are almost completely gone—they only persist along the shoulders of the tire. Do the treads matter? What is a good indicator of when the tire as a whole needs ...
9
votes
3answers
23k views

Mixing different front and rear tires

My used bike came with different front and rear tires. It appears to have some kind of Kenda commuter tire in the front, and Continental Country Ride in the rear. They are both the same size (700x28). ...
6
votes
4answers
357 views

Which tube size to prefer if several options apply?

I have 40-622 (a.k.a. 28x1.5") tires, and Schwalbe offers two different sizes of tubes - their models "17" and "19" - as applicable for that tire size. Ok, either one would surely fit well. But ...
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 ...
15
votes
6answers
1k views

What is a good way to keep my tires from going flat easily?

Title says it all, how do I keep my bicycle tires from going flat easily? I live in an area with a lot of sharp stuff (think glass shards, nails, cactus, etc)...
7
votes
9answers
8k views

I keep getting flats

I have been getting flats every 20-30 miles for the last 2 months. This has caused serious inconvenience to me, as bicycle is my preferred mode of transport to work and class. Details of the situation:...
5
votes
3answers
36k views

How do I determine my wheel size

Would someone explain wheel sizes. If I am not mistaken, the wheels on my Trek 520 touring bike are 700C. There are no markings, and of course, no documentation of any kind. I assume 700 means 700mm, ...
37
votes
5answers
9k views

Should I change both tires when I need to change one?

I know that it's a best practice in a car to change all 4 tires if you change 1, although in practice, it's only done if 3 need to be changed. Does the same thing hold true of a bike?
10
votes
6answers
9k views

What are the advantages of filling tires with Nitrogen instead of air?

I am completely new to riding bikes and know that are usually filled with air but nowadays some people fill them with Nitrogen instead. I don't know why they prefer to fill their tires with nitrogen ...
10
votes
7answers
6k views

How much does tire pressure affect the weight of the wheels

Kind of inspired by this question, but something I've been thinking about for a while. How much does the air in a bike tire weigh? Is it an appreciable amount? Is there a point where using a wider ...
8
votes
5answers
2k views

Slow leak on front cruiser tire

I ride my cruiser to the supermarket and back, using either a trailer or a basket over the front wheel for carrying groceries. The bike has developed a persistent slow leak on the front wheel, and I'...
33
votes
8answers
70k views

Which way do I orient my bike tire's tread direction? and why?

I have a mountain bike tire that has stamped on the side something like: <----------front rear-------------> Which seems like a pretty clear indication that the tire should be oriented in one ...
18
votes
7answers
23k views

How to get the tyre back on to the rim easily?

What is the best/easiest way to get the tyre back on to a rim after removing it to fix a puncture for example? Some tyres can be really hard to get back on to the rim. I don't like using the tyre ...
29
votes
9answers
73k views

How often should I change road bike tyres?

My road bike has now done 500 miles, but unlike cars, I've no idea how often the tyres should be changed. It's used on normal road conditions. The brow of the tyre is now smooth. How do I know if my ...
11
votes
4answers
4k views

What is the recommended type of tire for riding on wet pavement?

I am commuting in rainy Seattle, and the rain has started. Right now I have Continental Gatorskin tires on my commuter, but yesterday I noticed I was braking to stop the wheels and skidding quite a ...
12
votes
11answers
13k views

Which puncture-resistant tires?

I commute on city streets and have had two punctures in 5 months: first a roofing nail, second a small shard of glass. Punctures are a nuisance. I've read some people recommend Schwalbe "Marathon" ...
37
votes
8answers
16k views

How long should a road tyre hold its pressure?

How long should a road tyre be able to maintain a pressure of around 100psi, and what factors are likely to reduce this time? Background: My tyre pressures are consistently dropping to around 60psi ...
14
votes
6answers
3k views

Mountain Bike on Paved Roads

I'm an occasional biker. I bought a mountain bike (nothing fancy) with the idea that I might use it off-road or on mountain trails (of which there are many here in Calgary). However, since I've bought ...
10
votes
2answers
11k views

Can I get smaller tires without changing my rims?

I currently ride a hybrid that came with 700x32c tires. Can I swap out a narrower tire without changing the rims, or do rims only fit a specific size of tire? How small can I go before I have to buy ...
14
votes
5answers
14k views

Whatever happened to solid bike tubes?

As a child I had solid rubber inner tubes in my bike. They were a pain to get on but after I never had a flat again! Now I've recently started biking again and have had two flats in two days, each ...
2
votes
2answers
5k views

Rim width / tire section tolerance?

I have a Mavic Open Pro rim in 700 diameter. The manufacturer recommends tire widths between 19 and 28 mm : http://www.mavic.com/en/product/rims/road-triathlon/rims/Open-Pro How strict is this ...
1
vote
1answer
8k views

Hybrid bike how much should I inflate tyres

Hi I just bought a hybrid bike btwin riverside 3. It has 28 inch tires and weights 15kgs. My weight is 75kg. How much should I inflate my tires. And how often should I refill?
18
votes
10answers
31k views

What are the benefits of 700c23 tires?

23s come on almost all new road bikes, and tire selection is much better for 23s than other tire sizes at most shops. The benefits of 25s and 28s are a better ride, more traction, and are more flat ...
38
votes
8answers
14k views

Are slick tires worth it for commuting?

I commute to work on a Marin San Rafael on roads over a mix of flat to steep roads. My bike came with "700 x 35c with Puncture Protection" semi-slick tires: In the bike shed at work I noticed ...
11
votes
2answers
2k views

What's the best technique for removing a tyre from the rim?

This question talks about fitting a tyre back onto a rim, but I'd like to know how to get the tyre off in the first place. Especially if the tyre is very tight, or the dip in the middle of the rim ...
10
votes
4answers
8k views

Does the inner tube affect the maximum PSI?

If I have road tires that have a recommended pressure of 110 PSI and maximum of 120 PSI can I safely pump my tires up to that level or does the inner tube effect the maximum? I currently have the ...
10
votes
4answers
2k views

How to make studded tires

Has anyone ever made a set of studded tires? What did you use? I read about a method somewhere but I cannot recall where. I heard that you can: Drill/make a small hole through the tire Screw a ...
4
votes
1answer
306 views

How to replace a tube with only one quick stick?

So what is the correct number of quick sticks to swiftly change the tube? I had always thought that the answer is of course 2, but : I can do it twice as fast with one Quik Stick as you can with a ...
20
votes
1answer
32k views

What does the “c” in bicycle tire size mean?

For instance, in some cases I will see a particular bike tire listed as available in 700x25, 700x25c, 700c x 25, and 700 x 25mm. (Just picking out a number here, it could be 23, 25, 27, etc.) What, ...
12
votes
4answers
4k views

How can I repair a tyre with a deep cut?

I have some foldable racing tyres, still with plenty of tread but with some small cuts through the tread & cloth. Can I do anything to them or are they destined for the bin?
10
votes
6answers
3k views

Fat or Skinny Tires for Winter Riding?

Fat or Skinny? I think the arguments are as follows: Fat: You can float on top of the snow and you don-t have to go through it. You have a larger contact patch with the ground. Skinny: Will ...
3
votes
4answers
4k views

Anti-puncture options

I ride my bike to work. But every time I get a flat tire, my schedule is messed up because bike shops are not easily available on my town. Is there any other option besides puncture-proof tires?
2
votes
4answers
257 views

What steps should I follow to patch a tube?

I was wondering if I'm missing something when I patch my wheel, because I patched it yesterday and it had low pressure today. This is what I did: Released the air Used 2 screwdrivers to remove the ...
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 ...
14
votes
8answers
3k views

Fixing a flat - how to find the piercing object?

Just had a flat and having problems finding the thing that pierced the tube in the tire. Normally I just run my fingers around in it, until I found it, but this time everything looks O.K. My ...
9
votes
1answer
28k views

What does the label on a tire mean?

I went to a bike shop for new tires. I did not know which tires fit on my bike, so I just showed them my bike. When I took a look at the new tires, there was a label at the side, which says: 40-...
7
votes
2answers
1k views

Different tyre width (front and back)

Out of necessity, I had to put an 1.26" (32mm) rear tyre on my bike where the front tyre is only 1.1" (28mm) wide (and the bike came with 1.1" tyres when I bought it). Are there any advantages or ...
7
votes
1answer
12k views

Can I fit slightly different tyre sizes

My current bike tyres are 26 x 2.0 (Manufacturer fitted tyres) Is it possible to fit 26 x 2.1 or 26 x 1.95 on these wheels or is this going to cause an issue?
7
votes
3answers
461 views

Is this a puncture protection thing?

I got a vintage bike to commute with (I wanted a heavy one for the exercise) and I was hoping for a flat so I would have an excuse to spend money on a puncture resistant street tire to replace the ...
5
votes
2answers
514 views

MTB tires: why the extended thread on the edges?

I have tires similar to this one: My point is that the tire is quite "flat", with large knobs on the edges, unlike most MTB tires, which are round. The tires feel quite unstable on any hard surface ...
5
votes
4answers
624 views

What size innertube for 35mm tires? (or: get innertubes on the big side or small side?)

If you had 35mm tires (Schwalbe marathon supremes to be specific) would you get innertubes speced as 28-35mm or 35-42mm? Or whichever is cheaper?
4
votes
1answer
235 views

Durable and Affordable 20" wheel and tire combo for Bicycle trailer?

I purchased an Aosom trailer a while back, and the wheels and tires are truly horrible. So much so I only run light loads now. I'm looking for 20" wheels that are either double wall alloy or ...
3
votes
1answer
12k views

A general explanation of rim, tire and tube specifications

My bike's manufacturer page specifies that it has a rim size of 700CX14GX36H. It provides a tire size of 7X28C. It also mentions that it uses high performance 700C tires, which I think is also ...
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
6answers
428 views

I cannot go 30 miles without a flat. I can't figure out what the problem is

I have Mavix CXP-12 wheels (20mm). I have relatively new Freedom ThickSlick 23mm Tires on the wheels. I've been using these inner tubes: Meetlocks® 700x18-23c. I weigh 165 lb. I just keep getting ...
3
votes
3answers
679 views

Tyre Rubber Classifications

I was looking through a bike catalogue at one of the high-end road bikes (a $6000 Giant Propel) and I couldn't help but notice that this bike is advertised with specific tyres for front and rear ...