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Tire pressure

Old 07-19-22, 07:00 PM
  #1  
maclane.reid
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Tire pressure

Hey all, I’ve been cycling for some years now and decided to take a statistics course. Part of this course requires a project to compare two groups and I chose to compare tire pressure of road bikes vs. mountain bikes. Hoping I might get a wee bit of help from everyone, if possible, by answering two questions… all of the information will remain anonymous as well.

Do you ride a road bike or mountain bike?

What is your tire pressure upon inflation?



Thank you for any replies.
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Old 07-19-22, 07:26 PM
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This should be fun!

1) Road bike

2) 140 psi.
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Old 07-19-22, 07:32 PM
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You do realize the number of variables involved in that question is infinite. Do you want the tire sizes also? Or brands and models? Or maybe the elevation they'll be used at? Not trying to be difficult, it's just such a broad based question it's almost impossible to give it any credence. But here goes.
On my road bikes I run 80+ PSI depending on tire width. On my MTBs I run anywhere from 20-50PSI, again depending on the tire width and the expected terrain that day.
Of course this will remain anonymous because we're all anonymous here haha. Good luck with your class,
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Old 07-19-22, 07:33 PM
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Originally Posted by smd4 View Post
This should be fun!

1) Road bike

2) 140 psi.
140psi?

Have you considered solid tires for more comfort? … lol!

John
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Old 07-19-22, 07:35 PM
  #5  
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Originally Posted by 70sSanO View Post
140psi?

Have you considered solid tires for more comfort? … lol!

John
Nope. Pneumatics are plenty comfortable. And lighter, of course!
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Old 07-19-22, 07:36 PM
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Road bike.
80psi
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Old 07-19-22, 07:39 PM
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1: Road bike
2A: Modern bike, about 95 psi for my current 25mm tires
2B: Vintage bike, whatever the sidewall states the max pressure is because back in the day I thought they had to be as high as pressure as possible
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Old 07-19-22, 08:01 PM
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Originally Posted by 70sSanO View Post
140psi?
Dear god, don't get him started again.
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Old 07-19-22, 08:05 PM
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Mountain bike (27.5" X 2.8", tubeless): 19 psi rear, 17 psi front
Road bike (700c x 28mm, tubes): 95 psi front and rear
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Old 07-19-22, 08:05 PM
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Originally Posted by maclane.reid View Post
Hey all, I’ve been cycling for some years now and decided to take a statistics course. Part of this course requires a project to compare two groups and I chose to compare tire pressure of road bikes vs. mountain bikes. Hoping I might get a wee bit of help from everyone, if possible, by answering two questions… all of the information will remain anonymous as well.

Do you ride a road bike or mountain bike?

What is your tire pressure upon inflation?



Thank you for any replies.
Awesome. Post 1...**** post. Good job OP, I'm sure you'll end up being very popular around here.
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Old 07-19-22, 08:12 PM
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Originally Posted by maclane.reid View Post
Thank you for any replies.
Originally Posted by cxwrench View Post
Awesome. Post 1...**** post. Good job OP, I'm sure you'll end up being very popular around here.
The OP was thankful for that.
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Old 07-19-22, 08:17 PM
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Generally I go somewhere within the range of my tires.

My bikes are road, mountain, touring and a hybrid in a pear tree. Loads of bikes loads of different pressures your question is rather useless. Tire pressure has little to do with anyone else and is more to do with you and your riding, weight, tires, yada yada yada.
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Old 07-19-22, 08:30 PM
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Originally Posted by SpedFast View Post
You do realize the number of variables involved in that question is infinite. Do you want the tire sizes also? Or brands and models? Or maybe the elevation they'll be used at? Not trying to be difficult, it's just such a broad based question it's almost impossible to give it any credence. But here goes.
On my road bikes I run 80+ PSI depending on tire width. On my MTBs I run anywhere from 20-50PSI, again depending on the tire width and the expected terrain that day.
Of course this will remain anonymous because we're all anonymous here haha. Good luck with your class,
It’s an elementary statistics class. Definitely agree with you, just need to work with what I have. I already simplified it more then I would like but yes, there are many a variable like wheel size, tire width, you name it etc.
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Old 07-19-22, 08:35 PM
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Originally Posted by maclane.reid View Post
Do you ride a road bike or mountain bike? What is your tire pressure upon inflation?
Required pressure for road tires is generally a function of total weight (bike+rider+rig) and tire width, with the latter being an inverse relation. The rear tire requires more pressure than the front.

I weigh 160lbs; my bikes are around 20lbs + rig. So ...

​​​​​​28mm rear with groceries = 90 lbs
25mm rear road = 90lbs
25mm front road = 85lbs
23mm rear road = 100lbs
23mm front road = 95lbs
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Old 07-19-22, 08:41 PM
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Yeah, that was a little harsh. If it's for a class it's legit. Therefore:

Road: (40mm tires) 34frt/38rr
Mountain: (2.4-2.5" tires, tubeless) 18-19frt/23-24rr
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Old 07-19-22, 08:43 PM
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Originally Posted by SurferRosa View Post
Required pressure for road tires is generally a function of total weight (bike+rider+rig) and tire width, with the latter being an inverse relation. The rear tire requires more pressure than the front.

I weigh 160lbs; my bikes are around 20lbs + rig. So ...

​​​​​​28mm rear with groceries = 90 lbs
25mm rear road = 90lbs
25mm front road = 85lbs
23mm rear road = 100lbs
23mm front road = 95lbs
Originally Posted by cxwrench View Post
Yeah, that was a little harsh. If it's for a class it's legit. Therefore:

Road: (40mm tires) 34frt/38rr
Mountain: (2.4-2.5" tires, tubeless) 18-19frt/23-24rr
There is strong logic which says that front and rear pressures should be roughly the same.

https://www.renehersecycles.com/myth...gher-pressure/
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Old 07-19-22, 08:53 PM
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Originally Posted by maclane.reid View Post
Do you ride a road bike or mountain bike?
I ride a road bike.

Originally Posted by maclane.reid View Post
What is your tire pressure upon inflation?
95 psi front, 85 psi rear.
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Old 07-19-22, 09:04 PM
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Originally Posted by 70sSanO View Post
140psi?

Have you considered solid tires for more comfort? … lol!

John
Or ear protection in case of unexpected explosions.
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Old 07-19-22, 09:05 PM
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Road: 25mm 95-100psi
Urban/Commuter: 28mm 75psi
26er Mtb: 2.1 Tubed F28psi/R32psi

John
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Old 07-19-22, 09:08 PM
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Road bike, 700x28c PZero tires at 90 lbs.
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Old 07-19-22, 11:37 PM
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Road bike, 100lb pressure, 28mm tyres.

Touring bike, 70lb pressure, 32mm tyres.
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Old 07-19-22, 11:54 PM
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Road. 95 rear, 90 front. (Even simpler - 92)
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Old 07-20-22, 12:01 AM
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Road bike
90 lbf/in^2
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Old 07-20-22, 12:33 AM
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Road bike
74 front, 76 rear
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Old 07-20-22, 12:33 AM
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Man I really should have finished college or atleast took an easier major than chemistry, no offense OP but this question is so silly
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