Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Max Tire Pressure Label (700 x 32)

Notices
Road Cycling It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle. -- Ernest Hemingway

Max Tire Pressure Label (700 x 32)

Old 12-27-19, 12:46 PM
  #26  
Psimet2001 
I eat carbide.
 
Psimet2001's Avatar
 
Join Date: Jan 2006
Location: Elgin, IL
Posts: 20,774

Bikes: Lots. Van Dessel and Squid Dealer

Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 729 Post(s)
Liked 185 Times in 98 Posts
Pressure is esoteric. What works for one is not assured to work for you.

If it says 70 on the sidewall then try not to inflate it to 140. All things have a safety factor involved.

Keep in mind I still put 100 psi into dry rotted hookless Schwinn tires that roll in here on a daily basis.

Also keep in mind 70 on that big of a tire is most likely too high for your weight.

Have fun on your journey.
__________________
PSIMET Wheels, PSIMET Racing, PSIMET Neutral Race Support, and 11 Jackson Coffee
Podcast - YouTube Channel
Video about PSIMET Wheels

Psimet2001 is offline  
Old 12-27-19, 12:50 PM
  #27  
Razorrock
Senior Member
 
Join Date: Oct 2016
Location: Northwest Arkansas
Posts: 69

Bikes: Scott Sportster Gravel

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Likes: 0
Liked 6 Times in 4 Posts
I'm a fat dude way over your weight. I run GP4000 32mm on my road/gravel bike. I run 60-80 in rear and 40-60 in front. (start at high pressure and add air when lower pressure is reached) never had any problems with flats. 70psi and below is where you want it. Might as well run 28mm tires if you run any higher pressure.
Razorrock is offline  
Old 12-27-19, 12:53 PM
  #28  
Metallifan33
Senior Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 123

Bikes: Trek Domane SL 5

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Liked 70 Times in 24 Posts
Originally Posted by Psimet2001 View Post
Also keep in mind 70 on that big of a tire is most likely too high for your weight.

Have fun on your journey.
Originally Posted by Razorrock View Post
I'm a fat dude way over your weight. I run GP4000 32mm on my road/gravel bike. I run 60-80 in rear and 40-60 in front. (start at high pressure and add air when lower pressure is reached) never had any problems with flats. 70psi and below is where you want it. Might as well run 28mm tires if you run any higher pressure.
Interesting. Thanks guys... I didn't realize how much individual preference/variation there is when it comes to tire pressure. I'll start dropping it from 70 and see how it feels.
Metallifan33 is offline  
Old 12-27-19, 01:05 PM
  #29  
Sy Reene
Advocatus Diaboli
 
Sy Reene's Avatar
 
Join Date: Feb 2015
Location: Wherever I am
Posts: 5,473

Bikes: Merlin Cyrene, Nashbar steel CX

Mentioned: 11 Post(s)
Tagged: 1 Thread(s)
Quoted: 2696 Post(s)
Liked 229 Times in 186 Posts
Originally Posted by Psimet2001 View Post
Pressure is esoteric. What works for one is not assured to work for you.

If it says 70 on the sidewall then try not to inflate it to 140. All things have a safety factor involved.

Also keep in mind 70 on that big of a tire is most likely too high for your weight.

Have fun on your journey.
As someone else in this thread referenced, 72psi is result of from online pressure calculator for 225lbs total weight. I think that's with the 45/55 weight distribution. 40%/60% returns a 79psi result for the rear. What percentage of tire drop is safe to go to without fear of pinch flatting?
Sy Reene is offline  
Old 12-27-19, 01:29 PM
  #30  
ThermionicScott 
7-speed cultist
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 19,875

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)

Mentioned: 86 Post(s)
Tagged: 0 Thread(s)
Quoted: 2681 Post(s)
Liked 553 Times in 399 Posts
Originally Posted by Sy Reene View Post
What percentage of tire drop is safe to go to without fear of pinch flatting?
That can't be answered with one number, of course.
__________________
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498

Last edited by ThermionicScott; 12-27-19 at 01:48 PM.
ThermionicScott is offline  
Old 12-27-19, 02:06 PM
  #31  
WhyFi
Senior Member
 
WhyFi's Avatar
 
Join Date: Jan 2010
Location: TC, MN
Posts: 27,604

Bikes: R3 Disc, Domane, Haanjo

Mentioned: 329 Post(s)
Tagged: 1 Thread(s)
Quoted: 11144 Post(s)
Liked 1,088 Times in 626 Posts
Originally Posted by noodle soup View Post
I'm a little lighter(about 185#) and inflate 30mm tires to 60/55psi.
That's where I'm at these days, too

I think that the interior of your rims is also significantly wider than mine, too. But yeah, I'm running 28s at 65/70 now.
WhyFi is offline  
Old 12-27-19, 02:42 PM
  #32  
bbbean 
Senior Member
 
bbbean's Avatar
 
Join Date: Jul 2013
Location: Missouri
Posts: 2,237

Bikes: Giant Propel, Cannondale SuperX, Univega Alpina Ultima

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 431 Post(s)
Liked 108 Times in 73 Posts
Originally Posted by noodle soup View Post
Not really, but you frequently answer questions with a link to something you read, instead of talking about your actual experience on the subject.

I ride in the same area as the OP, and told him what actually works well for those conditions.,
I'm personally more interested in quantifiable, verifiable, and replicable studies than I am in "I like to ride at X PSI." Subjective anecdotes are just that.
__________________

Formerly fastest rider in the grupetto, currently slowest guy in the peloton

bbbean is offline  
Old 12-27-19, 02:47 PM
  #33  
Seattle Forrest
Senior Member
 
Seattle Forrest's Avatar
 
Join Date: Mar 2010
Location: Seattle, WA
Posts: 20,383
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 10545 Post(s)
Liked 1,733 Times in 1,036 Posts
Originally Posted by Metallifan33 View Post
Interesting. Thanks guys... I didn't realize how much individual preference/variation there is when it comes to tire pressure. I'll start dropping it from 70 and see how it feels.
Yeah, there's no one right answer. A lot of things come together to figure out the best pressure, like how heavy you are, how you distribute your weight over the front vs rear wheel, the surfaces you ride on, and how you want your bike to feel. But most people think the lowest pressure you can get away with and be happy with is the right answer.
Seattle Forrest is offline  
Likes For Seattle Forrest:
Old 12-27-19, 08:13 PM
  #34  
freeranger
Senior Member
 
freeranger's Avatar
 
Join Date: Jun 2005
Location: Kentucky
Posts: 1,481

Bikes: 06 Lemond Reno, 96 GT Timberline mtn.bike

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Liked 104 Times in 76 Posts
Most tires will perform a bit better at less than their max limit. Here's an article I found informative: https://www.roadbikerider.com/the-ti...-jan-heine-d1/
freeranger is online now  
Likes For freeranger:
Old 12-28-19, 08:44 AM
  #35  
Noctilux.95
Senior Member
 
Join Date: Sep 2014
Location: Southern California
Posts: 526

Bikes: Bianchi Oltre XR4 Celeste, De Rosa SK Pininfarina, Giant TCR SL, Giant Revolt Advanced Revolt 0 Gravel Bike, Trek Madone SLR

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
Liked 70 Times in 40 Posts
I’m around 150-lbs and put 65/60 psi in my 32mm Conti 5000 TL’s.
Noctilux.95 is offline  
Likes For Noctilux.95:
Old 12-28-19, 08:55 AM
  #36  
BillyD
Administrator
 
BillyD's Avatar
 
Join Date: Apr 2005
Location: Hudson Valley, NY
Posts: 26,907

Bikes: Merlin Cyrene '04; Bridgestone RB-1 '92

Mentioned: 288 Post(s)
Tagged: 2 Thread(s)
Quoted: 7128 Post(s)
Liked 522 Times in 323 Posts
Nice job with the closeup photography, nice clear pictures, well lighted and in-focus, a rarity in these parts.
__________________
See, this is why we can't have nice things. - - smarkinson
Where else but the internet can a bunch of cyclists go and be the tough guy? - - jdon
BillyD is offline  
Old 12-28-19, 09:19 AM
  #37  
noodle soup
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 7,332
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 3640 Post(s)
Liked 602 Times in 388 Posts
Originally Posted by bbbean View Post
I'm personally more interested in quantifiable, verifiable, and replicable studies than I am in "I like to ride at X PSI." Subjective anecdotes are just that.
Okay then, what tire pressure works the best with 32mm Bontrager R1, for a 185-190# rider, on the roads in and around Phoenix? I haven't seen an article specific to our conditions, but maybe you can point one out to me.

The OP can probably benefit more from someone about his size, that rides a similar bike(a Domane), with similar tires, on the same roads. I have over 90k miles of experience riding the roads in his area, so I have a pretty good idea of what will work well.

Last edited by noodle soup; 12-28-19 at 09:35 AM.
noodle soup is online now  
Likes For noodle soup:
Old 12-28-19, 09:19 AM
  #38  
xroadcharlie
Senior Member
 
Join Date: Apr 2019
Location: Windsor Ontario, Canada
Posts: 215

Bikes: 2018 Giant Sedona

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Liked 32 Times in 28 Posts
I think the 15% drop method used by many online calculators to determine tire pressure is a good starting point for tubed tires.

I'm guessing a smaller tire has less room for error because 85% of a 25mm tire for suspension isn't much.

A stiffer tire casing may work well with less pressure, And if you don't plan on climbing curbs, we might get away with less pressure too.

That said I try to keep close to the min and max pressure range printed on the tire. Those numbers are there for a reason.
xroadcharlie is offline  
Old 12-28-19, 09:23 AM
  #39  
asgelle
Senior Member
 
Join Date: Apr 2006
Location: Albuquerque, NM
Posts: 3,829
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 498 Post(s)
Liked 66 Times in 45 Posts
Originally Posted by noodle soup View Post
Okay then, what tire pressure works the best with 32mm Bontrager R1, for a 185-190# rider, on the roads in and around Phoenix? I haven't seen an article specific to our conditions, but maybe you can point one out to me.
Define best.
asgelle is offline  
Old 12-28-19, 09:37 AM
  #40  
TakingMyTime
Senior Member
 
Join Date: Aug 2012
Location: Los Alamitos, Calif.
Posts: 1,647

Bikes: Trek 7.4 FX, 5200 & 7700

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 496 Post(s)
Liked 189 Times in 124 Posts
You know, it doesn't cost anything to experiment with different pressures to find out what works best for you.
TakingMyTime is offline  
Likes For TakingMyTime:
Old 12-28-19, 09:38 AM
  #41  
noodle soup
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 7,332
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 3640 Post(s)
Liked 602 Times in 388 Posts
Originally Posted by asgelle View Post
Define best.
I want the article to tell me that. According to some here, these tests can tell us all we need to know.
noodle soup is online now  
Old 12-28-19, 09:49 AM
  #42  
asgelle
Senior Member
 
Join Date: Apr 2006
Location: Albuquerque, NM
Posts: 3,829
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 498 Post(s)
Liked 66 Times in 45 Posts
Originally Posted by noodle soup View Post
I want the article to tell me that. According to some here, these tests can tell us all we need to know.
The articles with data can explain how the various parameters affect performance so riders can dial in the behavior the think is best for them. Only someone with a very limited outlook would think their personal preferences would apply universally or that their solution for how to get to that point is the only one.
asgelle is offline  
Likes For asgelle:
Old 12-28-19, 10:00 AM
  #43  
noodle soup
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 7,332
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 3640 Post(s)
Liked 602 Times in 388 Posts
Originally Posted by asgelle View Post
The articles with data can explain how the various parameters affect performance so riders can dial in the behavior the think is best for them. Only someone with a very limited outlook would think their personal preferences would apply universally or that their solution for how to get to that point is the only one.


If you spent the amount of time I have on these roads(and worked in a few Phoenix area shops), you'd have a far better understanding of what works, and what doesn't(for riders with different needs). It's not just what works for me, but for riders that I deal with on a daily basis.
noodle soup is online now  
Old 12-28-19, 11:15 AM
  #44  
Racing Dan
Senior Member
 
Racing Dan's Avatar
 
Join Date: Aug 2015
Posts: 1,466
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 856 Post(s)
Liked 47 Times in 39 Posts
Imo you should not exceed the max pressure recommended by the manufacturer, but other than that, its highly subjective what pressure is "right". Just take note of the pump gauge and try out different pressures for yourself.
Racing Dan is offline  
Likes For Racing Dan:
Old 12-29-19, 04:18 PM
  #45  
bbbean 
Senior Member
 
bbbean's Avatar
 
Join Date: Jul 2013
Location: Missouri
Posts: 2,237

Bikes: Giant Propel, Cannondale SuperX, Univega Alpina Ultima

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 431 Post(s)
Liked 108 Times in 73 Posts
Originally Posted by noodle soup View Post
I have a pretty good idea of what will work well.
I'm so happy for you.
__________________

Formerly fastest rider in the grupetto, currently slowest guy in the peloton

bbbean is offline  
Old 12-29-19, 04:58 PM
  #46  
Seattle Forrest
Senior Member
 
Seattle Forrest's Avatar
 
Join Date: Mar 2010
Location: Seattle, WA
Posts: 20,383
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 10545 Post(s)
Liked 1,733 Times in 1,036 Posts
Originally Posted by asgelle View Post
Define best.
If I'm not paying attention and hit a lake, I want to float across to the other side.
Seattle Forrest is offline  
Old 12-30-19, 12:37 PM
  #47  
altondavis2
Senior Member
 
Join Date: Nov 2014
Posts: 225
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 7 Times in 6 Posts
The folks that write user manuals do not manufacture tires. Heck, they may not even ride bikes.
Stick to the numbers on the tire, the manufacturer knows the safety standards. I don't know who
makes the tires for Bontrager. My LBS sticks to whatever is on the tire. Ditto for your car tires.
altondavis2 is offline  
Old 12-30-19, 12:47 PM
  #48  
bikerbill2
Junior Member
 
Join Date: Jul 2013
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 5 Times in 3 Posts
My 700 x 32 has on the side of the tire 50lbs psi minimum, 85lbs psi max, I'm riding on 80 lbs psi, think I'll drop to 70 and see how that works. Interesting thread here, and destroyed my thinking, which was, higher the psi the less resistance the more efficient the bicycle.
bikerbill2 is offline  
Likes For bikerbill2:
Old 12-30-19, 03:42 PM
  #49  
72andsunny
Senior Member
 
72andsunny's Avatar
 
Join Date: Mar 2005
Posts: 285
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked 2 Times in 2 Posts
I have no idea how all of yourun such low pressures. Im only 160 pounds and if Im not within 5 PSI of the side wall recommendation, my rims are practically rubbing the ground.
72andsunny is offline  
Old 12-30-19, 04:14 PM
  #50  
bikerbill2
Junior Member
 
Join Date: Jul 2013
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 5 Times in 3 Posts
I'm 160 as well, so I'll see what 70lbs psi does coming off my 80lbs with the 85lbs psi max. I know that at 80lbs psi riding on a wet pavement I can see only a very small wet imprint on the front tire, which means a small tire contact patch with the pavement.
bikerbill2 is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.