Go Back  Bike Forums > Bike Forums > Cyclocross and Gravelbiking (Recreational)
Reload this Page >

Gravel Tire Pressure on Pavement? (40+mm tires)

Notices
Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like : "Unbound Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Gravel Tire Pressure on Pavement? (40+mm tires)

Old 11-09-21, 03:20 PM
  #1  
DarKris
Senior Member
Thread Starter
 
DarKris's Avatar
 
Join Date: Dec 2015
Location: Buffalo, NY
Posts: 615

Bikes: Kona Kahuna DL Drop Bar - Sensah SRX Pro 1x11 (2012 Frame), Giant Toughroad GX 1 - Shimano Road Hydro + SLX 1x10 (2018), Diamondback Sync'r - SRAM NX 1x12 (2020)

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 157 Post(s)
Liked 90 Times in 52 Posts
Gravel Tire Pressure on Pavement? (40+mm tires)

I just wanted to get an idea of what you all run when it comes to tire pressure with larger gravel tires in the 40-50+mm size for primarily pavement. Iíve been testing tire pressures with the Fleecer Ridge tires which are 55mm but roll nice on pavement. Iíve gone as low as 25-30psi and up to 40-45psi which is high but Iím also ~250lbs. Honestly I didnít think I felt that much of a difference, but I think the bigger test would be doing longer rides than my short 15 min. test rides 😅

Still, I was curious to see what others ran, and the reasoning behind why you settled with that tire pressure.
DarKris is offline  
Old 11-09-21, 03:32 PM
  #2  
mstateglfr 
Sunshine
 
mstateglfr's Avatar
 
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 14,497

Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 8167 Post(s)
Liked 5,048 Times in 2,933 Posts
210#. 43mm Gravelking SS tires. 40psi front and 45psi back for mixed surface rides. If it is legitimately only pavement, I will pump em up a touch more.

I run my tires higher than what every calculator shows and what current trends dictate. I dislike the feel when they even get down to 35psi- I may be fast at that pressure due to the incremental benefits, but I dislike the feel.
My tires are for sure squishy at the psi I list, I can feel the suspension created from the tire size and psi when riding rough/loose gravel, and I dont feel beat up after long rides. Given all that, there isnt much reason to go lower.
mstateglfr is offline  
Likes For mstateglfr:
Old 11-09-21, 08:45 PM
  #3  
chaadster
Thread Killer
 
Join Date: Aug 2008
Location: Ann Arbor, MI
Posts: 11,511

Bikes: '15 Kinesis Racelight 4S, '76 Motebecane Gran Jubilťe, '17 Dedacciai Gladiatore2, '12 Breezer Venturi, '09 Dahon Mariner, '12 Mercier Nano, '95 DeKerf Team SL, '19 Tern Rally, ‘21 Breezer Doppler Cafe+, ‘19 T-Lab X3

Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 2076 Post(s)
Liked 1,125 Times in 688 Posts
At 245lbs, I run 42mm Ultradynamico Rosť at 55psi/60psi F/R, and 48mm Herse Switchback Ridge at 50psi/55psi F/R. At those pressures, they’re firm enough to feel sporty on pavement.
chaadster is offline  
Old 11-10-21, 08:16 AM
  #4  
BJack312
Newbie
 
Join Date: Aug 2007
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked 8 Times in 7 Posts
I'm also in the 240 lb. range. I generally ride 2 different tires, the 43mm Gravelking SS+, and the Rene Herse Hurricane Ridge with the endurance + casing, which is 42mm.

For the Gravelkings, If I'm riding mostly gravel I will set the pressure at 30 front and 35 rear. If it is predominantly pavement I will go 33/38.

For the Hurricance Rides tires, they mostly see gravel and are always at 32 front and 37 rear.
BJack312 is offline  
Old 11-10-21, 10:56 AM
  #5  
Rolla
Victimless Criminal
 
Rolla's Avatar
 
Join Date: Sep 2020
Posts: 2,510
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1107 Post(s)
Liked 2,688 Times in 1,196 Posts
175 pound rider on 47mm tubeless WTB Byways, which they recommend be run at 25 - 45 psi. I often ride at 40 for pavement, which is quite comfortable and doesn't feel squishy, but have gone as low as 30 when the surface is mixed. That definitely feels softer, but a little squirmier. 35ish is probably the sweet spot.
Rolla is offline  
Old 11-10-21, 11:46 AM
  #6  
Clipped_in
Rubber side down
 
Clipped_in's Avatar
 
Join Date: Mar 2011
Location: Teh Quickie Mart
Posts: 1,737

Bikes: are fun! :-)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 146 Times in 85 Posts
Currently, I'm at 225#. For pavement only I run my Pathfinder Pro 42mm tires at 57psi front and 60psi rear. I don't like to be bouncing down the road and that is max recommended pressure for my hookless rims.
Clipped_in is offline  
Old 11-10-21, 01:07 PM
  #7  
pbass
Senior Member
 
Join Date: Sep 2012
Location: SoCal
Posts: 1,105

Bikes: 2016 Surly Cross Check singlespeed, 2019 Kona Rove ST

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Liked 253 Times in 176 Posts
I'm about 134 lbs, and offroad I run my tubeless 650Bx47 Senderos at around 18-20 psi. I always go higher for longer rides on pavement, in my case I'll go to around 25-27psi or so. The Senderos are quite knobby--basically mtb tires-- and I'm still sorting out what actually feels better on pavement for them--higher, or lower? Hard to tell sometimes!
On my still-tubed 700c x 40 bike, with Nanos, I run higher--around 30 on pavement, mid 20's offroad. The Nanos are more pavement-friendly than the Senderos as well.
pbass is offline  
Old 11-10-21, 01:49 PM
  #8  
rumrunn6
Senior Member
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 27,400

Bikes: Bottecchia Sprint, GT Timberline 29r, Trek FX Alpha 7.0

Mentioned: 107 Post(s)
Tagged: 0 Thread(s)
Quoted: 4562 Post(s)
Liked 2,229 Times in 1,517 Posts
250lbs at 45psi? how much is that rear tire bulging on pavement? maybe if it feels firm, it doesn't matter. is it bouncy at all? went out on my MTB the other day after not riding it since August & thought it didn't need air. I was wrong. bouncy & squishy. had to go back to my car & pump the 2.25" tires up to 30psi rear 25 psi front. on my 40-45mm tires on hybrid on pavement if I remember correctly the rear usually goes up around 60psi, the front 5-10 psi lower. I'm ~225lbs w/o shoes etc
rumrunn6 is offline  
Old 11-10-21, 02:26 PM
  #9  
Badger6
Obsessed with Eddington
 
Badger6's Avatar
 
Join Date: Jun 2013
Location: Brussels (BE) 🇧🇪
Posts: 1,259

Bikes: '16 Spesh Diverge, '14 Spesh Fatboy, '18 Spesh Epic, '18 Spesh SL6, '21 Spesh SL7, '21 Spesh Diverge...and maybe n+1?

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 498 Post(s)
Liked 567 Times in 347 Posts
80kg on me frame...too much imported IPA and Belgian beer and chocolate.

'21 Diverge (9.0kg) on Pathfinder Pro 700x38mm (measure 38.1mm with calipers) at 36-38 psi, gravel (chunky or light) or pavement. Don't care.
'16 Diverge (9.2kg) on Roubaix Pro 700x30/32 (inflate to 35.3mm with calipers) at 50-55psi, mostly pavement, gravel is never more than light stuff.

Yeah, not 40+, sorry...

Last edited by Badger6; 11-10-21 at 02:28 PM. Reason: Clarity
Badger6 is offline  
Old 11-10-21, 03:14 PM
  #10  
chas58
Senior Member
 
chas58's Avatar
 
Join Date: Jul 2010
Location: Michigan
Posts: 4,844

Bikes: too many of all kinds

Mentioned: 35 Post(s)
Tagged: 0 Thread(s)
Quoted: 1142 Post(s)
Liked 403 Times in 325 Posts
This is the original 15% tire drop chart. Still valid today. I guess you can interpolate a little for 40mm. This is wheel load (not rider weight). This was mind blowing when it was originally published, but all these years later, it is still pretty applicable.
chas58 is offline  
Old 11-10-21, 03:16 PM
  #11  
chas58
Senior Member
 
chas58's Avatar
 
Join Date: Jul 2010
Location: Michigan
Posts: 4,844

Bikes: too many of all kinds

Mentioned: 35 Post(s)
Tagged: 0 Thread(s)
Quoted: 1142 Post(s)
Liked 403 Times in 325 Posts
I'm ~175. 40mm tires I'm 30F/40R with 50-55mm I'm about 25 front.
chas58 is offline  
Old 11-10-21, 05:44 PM
  #12  
franswa
Senior Member
 
franswa's Avatar
 
Join Date: Jul 2014
Location: ATX
Posts: 1,796
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 324 Post(s)
Liked 250 Times in 105 Posts
Guess Iím an outlier hereÖ

190# on 650x47 and I run 24f/26r on pavement and 18f/20r off pavement
franswa is offline  
Likes For franswa:
Old 11-10-21, 07:30 PM
  #13  
tyrion
Senior Member
 
tyrion's Avatar
 
Join Date: Oct 2015
Location: San Diego, California
Posts: 3,749

Bikes: Breezer Radar

Mentioned: 27 Post(s)
Tagged: 0 Thread(s)
Quoted: 2010 Post(s)
Liked 1,540 Times in 745 Posts
Gravelking SK 700x50

front 24.6psi
rear 37.9psi

I'm 230 lbs.
tyrion is offline  
Old 11-11-21, 10:32 AM
  #14  
revcp 
Senior Member
 
Join Date: Oct 2012
Location: Twin Cities, Minnesota, USA
Posts: 1,283

Bikes: 2017 Salsa Carbon Mukluk frame built with XT, 2018 Kona Rove NRB build with Sram Apex 1,2008 Salsa El Mariachi, 1986 Centurion Ironman

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 278 Post(s)
Liked 74 Times in 56 Posts
168 lbs, 47mm Challenge Gravel Grinders, recommended for 25-35 psi. I typically run around 33 or so in the rear, a little less in the front. That seems to work well for mixed surfaces so I'm not having to let air out, or pump things up.
__________________
Don't complain about the weather and cower in fear. It's all good weather. Just different.
revcp is offline  
Old 11-13-21, 07:57 PM
  #15  
Wattsup
Senior Member
 
Join Date: Jul 2018
Posts: 541
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 311 Post(s)
Liked 24 Times in 21 Posts
Interesting the differences in pressures. I'm 220lbs, riding on Teravail Rutlands in 47's. On really rough choppy gravel, I have ridden them as low as 30 psl. I'm riding a gravel/asphalt mix tomorrow, pretty smooth gravel, and I'll pump them up to 35psi.
Wattsup is offline  
Old 11-13-21, 08:54 PM
  #16  
Wattsup
Senior Member
 
Join Date: Jul 2018
Posts: 541
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 311 Post(s)
Liked 24 Times in 21 Posts
Try this calculator. https://silca.cc/pages/sppc-form
Wattsup is offline  
Likes For Wattsup:
Old 11-13-21, 09:17 PM
  #17  
Gravel Rider
Senior Member
 
Join Date: Aug 2021
Posts: 153
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Liked 148 Times in 63 Posts
Originally Posted by Wattsup View Post
That is the most accurate one I've seen so far.
40mm
220#
32f
35r
Gravel Rider is offline  
Old 11-13-21, 09:20 PM
  #18  
Wattsup
Senior Member
 
Join Date: Jul 2018
Posts: 541
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 311 Post(s)
Liked 24 Times in 21 Posts
Originally Posted by Gravel Rider View Post
That is the most accurate one I've seen so far.
40mm
220#
32f
35r
Yes, I thought so too. It recommends exactly what I am doing now. Seems most everyone else is filling their tires to higher pressures though. I have learned by trial and error.
Wattsup is offline  
Old 11-13-21, 09:32 PM
  #19  
Gravel Rider
Senior Member
 
Join Date: Aug 2021
Posts: 153
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Liked 148 Times in 63 Posts
Originally Posted by Wattsup View Post
Yes, I thought so too. It recommends exactly what I am doing now. Seems most everyone else is filling their tires to higher pressures though. I have learned by trial and error.
Dealer suggested 55/50.
I was running 45/40.
Today I rode gravel 35/32 and it was the best ride ever. Glad to have the proper pressures now.
Gravel Rider is offline  
Likes For Gravel Rider:
Old 11-14-21, 12:03 PM
  #20  
Hiro11
Senior Member
 
Join Date: Jun 2010
Posts: 2,554

Bikes: To the right: opinions, not facts.

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 740 Post(s)
Liked 399 Times in 210 Posts
~165lbs. All setups are tubeless

Adventurey bike: 700x50 Gravelking SKs on wide 29er rims at 28-32 psi. This is basically a drop bar mountain bike and this setup is is a little slow on the road but great on rougher gravel or singletrack.
Gravel race / cross bike: 700x32 Gravelking slicks or SS+ on carbon hookless rims at 37-40psi. This seems low, but it's the recommended pressure for these rims and it works well.
Endurance road bike / smooth gravel bike: 700x28 GP5KTLs at 65-72 psi. I've done race simulation rides at 25mph+ avg on this bike. Wouldn't want to race a crit on it but it's fine for 99% of group rides.

Last edited by Hiro11; 11-14-21 at 12:14 PM.
Hiro11 is offline  
Old 11-14-21, 04:24 PM
  #21  
mstateglfr 
Sunshine
 
mstateglfr's Avatar
 
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 14,497

Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 8167 Post(s)
Liked 5,048 Times in 2,933 Posts
Originally Posted by Gravel Rider View Post
Dealer suggested 55/50.
I was running 45/40.
Today I rode gravel 35/32 and it was the best ride ever. Glad to have the proper pressures now.
Is that what you choose for pavement though?
mstateglfr is offline  
Old 11-14-21, 05:31 PM
  #22  
Gravel Rider
Senior Member
 
Join Date: Aug 2021
Posts: 153
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Liked 148 Times in 63 Posts
Idk

Originally Posted by mstateglfr View Post
Is that what you choose for pavement though?
I haven't been on the road yet. Maybe add 5 to 40/37?
This is all new to me. Got a mtn bike in Feb and 2 rides on this Bombtrack. Just found out I have the trim feature on the fd. Lots to learn 4 shore.
Gravel Rider is offline  
Old 11-14-21, 07:13 PM
  #23  
dwmckee
Senior Member
 
dwmckee's Avatar
 
Join Date: Jun 2008
Location: Pittsburgh, PA
Posts: 2,424

Bikes: Co-Motion Cappuccino Tandem,'88 Bob Jackson Touring, Co-Motion Cascadia Touring, Open U.P., Ritchie Titanium Breakaway, Frances Cycles SmallHaul cargo bike. Those are the permanent ones; others wander in and out of the stable occasionally as well.

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 406 Post(s)
Likes: 0
Liked 319 Times in 214 Posts
Originally Posted by Gravel Rider View Post
Dealer suggested 55/50.
I was running 45/40.
Today I rode gravel 35/32 and it was the best ride ever. Glad to have the proper pressures now.
Some dealers are clueless about gravel riding even if they sell gravel bikes. I come out exactly on what the Silca calculator recommends...
dwmckee is offline  
Likes For dwmckee:
Old 11-15-21, 08:13 PM
  #24  
SquishyBiker
Junior Member
 
Join Date: May 2020
Location: Auckland, NZ
Posts: 105

Bikes: 2014 Avanti Circa (Rd Dist), 2020 Giant Toughroad (Rd Tour), 2021 Trek Allant+ 8S (eCommute), 2021 Scott Aspect 940 (Mt HT), 2014 Santa Cruz Superlight 29er (Mt FS), 2022 Scott Spark 960 (Mt FS)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 33 Post(s)
Liked 50 Times in 26 Posts
Weight: 247lb
Tires: 700x44 WTB Byways
Wheels: DT Swiss GR531

I run 40f/48r on tarmac, 35f/42r on mix of surfaces, and 30/36 on dedicated gravel
I mainly run such a difference in the front to try and reduce vibrations in the front end.
SquishyBiker is offline  
Old 11-15-21, 09:22 PM
  #25  
mstateglfr 
Sunshine
 
mstateglfr's Avatar
 
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 14,497

Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo

Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
Quoted: 8167 Post(s)
Liked 5,048 Times in 2,933 Posts
I just ran the silca tire pressure calculator.

It suggests 41rear 40front for my total weight on 43mm tires.
I run 45rear and 40front when on gravel/mixed surface, as mentioned earlier.
So pretty darn close.


But for pavement only? I am pretty surprised to see some of the low numbers mentioned in this thread since it's about gravel tire pressure for pavement. There is just no downside to bumping the pressure up a bit- a wider tire will still have plenty of cushion to deform over road imperfections and it'll roll faster than if it's at a low pressure.
I am not suggesting a 43mm tire be pumped to 90psi, to be clear.
mstateglfr is offline  
Likes For mstateglfr:

Thread Tools
Search this Thread

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

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.