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Old 09-11-2012, 03:37 AM
 
Location: Duluth, Minnesota, USA
7,639 posts, read 18,121,762 times
Reputation: 6913

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There's been a lot of discussion about tires, so I'm going to chime in and ask something that has not yet been asked:

What do you inflate your tires to?

My main bike (currently out of order) has a recommended inflation of 60 - 80 psi. I usually inflate them to 80-85 psi, although I obviously made a mistake as my front tire popped on a 45-mile bike ride. I will never over-inflate again!

My other bike (a Raleigh Dash Plus 21-speed of unknown provenance I got from my grandpa, looks like a cheap road bike) recommends 50 - 70 psi.

Finally, a little purple one my mom and I picked up for free from the Reuse Center takes about 50 PSI. I rode / walked it (it keeps shifting between high and low gear) five miles to the nearest gas station with free air, inflated the back tire to perfection, took the hose off the nozzle, and BAM, the air went out. I had to walk it five miles back, although I could ride downhill ever so slowly with the back tire.

The first has a Presta valve and the two others have American valves (so you can use them at gas stations).
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Old 09-11-2012, 04:53 AM
 
Location: Richardson, TX
8,734 posts, read 13,817,220 times
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Those are called schrader valves. I run 25mm on both of my road bikes and I fill them to 120-125#s. I used to have 19mm and those would taker 150#. They were fast but harsh.
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Old 09-11-2012, 08:32 AM
 
Location: San Diego
50,264 posts, read 47,023,439 times
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Quote:
Originally Posted by PanTerra View Post
Those are called schrader valves. I run 25mm on both of my road bikes and I fill them to 120-125#s. I used to have 19mm and those would taker 150#. They were fast but harsh.
I had some pizza cutters that would take 180 Changing flats was not fun. I will run max on all my tires.
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Old 09-11-2012, 09:47 AM
 
Location: Lake Arlington Heights, IL
5,479 posts, read 12,261,841 times
Reputation: 2848
60-65 PSI on my mountain bike, less if I am actually mountain biking instead of smooth/crushed limestone path riding.
100-105 on my road bike. I have HED Ardennes wheelset and they are wider than typical road wheelset. Thus a lower PSI. Be VERY careful and gentle pulling the bike pump valve off the stem.
Your post reminds me why I do not use gas station or air compressor pumps on my bikes.
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Old 09-11-2012, 10:33 AM
 
1,101 posts, read 4,329,022 times
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I run 120psi on my road bike (23 mm tires), 28-30psi on my tubeless MTB (although I ran 40-45 when I had tubes). Presta all around.
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Old 09-11-2012, 12:18 PM
 
Location: Richardson, TX
8,734 posts, read 13,817,220 times
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I just inflate them to what is printed on the sidewall plus a little extra to get the prescribed contact patch size and deflection profile.

Here is a good resource on tires and tubes.

http://sheldonbrown.com/tires.html

Last edited by PanTerra; 09-11-2012 at 12:37 PM..
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Old 09-11-2012, 12:39 PM
 
Location: Richardson, TX
8,734 posts, read 13,817,220 times
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Quote:
Originally Posted by 1AngryTaxPayer View Post
I had some pizza cutters that would take 180 Changing flats was not fun. I will run max on all my tires.
Now that is an apt description, I am going to steal that one. hehehe
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Old 09-11-2012, 12:52 PM
 
Location: Phoenix
7,177 posts, read 9,225,978 times
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Mid range of whatever is printed on the tire walls. If I can't find that then 60-70 for mountain bikes and 75-85 for my hybrid.
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Old 09-11-2012, 12:59 PM
 
Location: Planet Eaarth
8,954 posts, read 20,677,986 times
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I inflate my tires to "rock hard" which helps by cutting rolling resistance.
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Old 09-14-2012, 09:55 PM
 
10,222 posts, read 19,208,157 times
Reputation: 10894
120 on my road bike, 60 on my MTB (I don't do any serious mountain stuff, just some unpaved trails, so it has "city tires").
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