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28mm tires on paved roads . . . have you tried them? Do you like them?

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Road Cycling ďIt 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.Ē -- Ernest Hemingway
View Poll Results: Have you tried 28mm tires? Do you like them better than 25's? (Vote all that apply)
I tried tubeless 28's. I like them.
57
22.01%
I tried tubeless 28's. I don't like them.
5
1.93%
I tried tubed 28's. I like them.
182
70.27%
I tried tubed 28's. I don't like them.
3
1.16%
I've never tried 28mm bike tires for very long.
10
3.86%
I'm not interested in going to 28's at all.
23
8.88%
Multiple Choice Poll. Voters: 259. You may not vote on this poll

28mm tires on paved roads . . . have you tried them? Do you like them?

Old 06-26-20, 07:59 AM
  #126  
noodle soup
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Originally Posted by WhyFi View Post
28mm.
Glad I bought 30mm ones. On 23mm internal width hoops, they should inflate to 30-31mm.

Since buying a mountain bike in mid-May, my road bike is only getting about 80 miles a week. At that usage rate, the G-One tires might last forever.
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Old 06-26-20, 08:01 AM
  #127  
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Originally Posted by noodle soup View Post
Glad I bought 30mm ones. On 23mm internal width hoops, they should inflate to 30-31mm.

Since buying a mountain bike in mid-May, my road bike is only getting about 80 miles a week. At that usage rate, the G-One tires might last forever.
My new wheels should be in-hand today - I'm already happy with the 28s, but I think that I'll be happierer when they're puffed out a little more.
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Old 06-27-20, 11:19 AM
  #128  
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The update nobody asked for - I tried 102/108, as recommended by the SRAM calculator, on the Battaglin MAX bike. Better than 110/120, but not as nice as 28s at 85/95 on my other steel bike. Silca's calculator recommends 96/98 for 25s for the combined weight, so that's my next magical trick.
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Old 06-29-20, 10:04 AM
  #129  
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Originally Posted by Bah Humbug View Post
So for the "bigger is better" crowd, what's the optimal size? You're not on fat-bikes so it can't be a truly unlimited thing. Is it 32mm? 40mm? 47mm? What would you all like to ride and say "yeah, this is the right size"?

I mean, for the record, I'm good with the 28mm Michelin Power Protection+ I use, but I'm also literally just trying to work as hard as I can every morning so the efficiency of anything isn't important.
If I had to choose an optimal size, for me I think it would be 38 for smooth roads

The only reason I'm still riding 28s is because that is what fits in my frames. It wasn't until recently that you could get a real off-the-shelf road bike that fit wide tires. It feels like a chicken and an egg problem. Nobody was making the tires, so nobody was making the frames. nobody was making frames, so nobody was making tires.
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Old 06-29-20, 10:49 AM
  #130  
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Originally Posted by noodle soup View Post
Glad I bought 30mm ones. On 23mm internal width hoops, they should inflate to 30-31mm.

Since buying a mountain bike in mid-May, my road bike is only getting about 80 miles a week. At that usage rate, the G-One tires might last forever.
Originally Posted by WhyFi View Post
My new wheels should be in-hand today - I'm already happy with the 28s, but I think that I'll be happierer when they're puffed out a little more.
I installed the 30mm Pro1 Addix on the LB wheelset. The tires measured 30.48mm on 23mm internal width hoops,
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Old 06-29-20, 11:01 AM
  #131  
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Originally Posted by noodle soup View Post
I installed the 30mm Pro1 Addix on the LB wheelset. The tires measured 30.48mm on 23mm internal width hoops,
The 28s are certainly wider on the 303S vs the Assaults, but I haven't measured them yet. They feel pretty damn good at ~62/65psi.
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Old 06-29-20, 11:03 AM
  #132  
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Originally Posted by WhyFi View Post
The 28s are certainly wider on the 303S vs the Assaults, but I haven't measured them yet. They feel pretty damn good at ~62/65psi.
what's the internal width of the 303s?
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Old 06-29-20, 11:24 AM
  #133  
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Originally Posted by noodle soup View Post
what's the internal width of the 303s?
23mm, hookless.
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Old 06-29-20, 11:28 AM
  #134  
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Originally Posted by WhyFi View Post
23mm, hookless.
Nice. I'm sure the ride is smooooth.
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Old 09-30-20, 08:05 PM
  #135  
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Originally Posted by wgscott View Post
I switched out my puny little anorexic 28mm GP40000 II's, which were a measly 30mm on my rims, and put on some Compass Barlow Pass 38mm and pumped them up real good to 35 psi in the front, 40 psi in the back. They "feel" a wee bit more sluggish, but my GPS data say otherwise. (Jan says people sometimes subjectively interpret a harsher ride as a faster ride.)
Hi. I now have a bike that can fit wider tires than the 28s I've been on and see you have gone from 28mm to 38mm. Strictly for road surfaces are you just as fast on your 38s as you were on your 28s? I'm thinking I'll go to 32s, but if you don't lose any speed going from 32 to 38, why not get the comfort? I've read plenty of "scientific" input, but wondering what your real world input may be.....thanks. First post.
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Old 10-01-20, 04:22 AM
  #136  
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Experiment. personal taste is more at play here than hard data. Find the widest tires you can fit on your rims and give it a try. Play with different pressures. I am not convinced that three is all that much more comfort gained from soft 38s over soft 32s .... but it depends upon the roads you ride and your definition of "comfort."

As for speed .... if your wheels and tires weigh more, they will feel a little more sluggish when accelerating (when accelerating forward, for the physics sticklers) but you might not mind or might not even notice. How important is speed? Everyone has a different answer.

I think the last line about subjective interpretation is all-important. Everyone has different interpretations of how their ride should "feel" (in quotes because it is a combination of factors and purely subjective---indefinable) and for some, the "feel" is fine with wider tires, heavier wheels, harder tires, whatever .... So the only real answer is "Try some stuff and see for yourself."
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Old 10-01-20, 06:39 AM
  #137  
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Originally Posted by Maelochs View Post
Experiment. personal taste is more at play here than hard data. Find the widest tires you can fit on your rims and give it a try. Play with different pressures. I am not convinced that three is all that much more comfort gained from soft 38s over soft 32s .... but it depends upon the roads you ride and your definition of "comfort."

As for speed .... if your wheels and tires weigh more, they will feel a little more sluggish when accelerating (when accelerating forward, for the physics sticklers) but you might not mind or might not even notice. How important is speed? Everyone has a different answer.

I think the last line about subjective interpretation is all-important. Everyone has different interpretations of how their ride should "feel" (in quotes because it is a combination of factors and purely subjective---indefinable) and for some, the "feel" is fine with wider tires, heavier wheels, harder tires, whatever .... So the only real answer is "Try some stuff and see for yourself."
thanks for the reply. Try some out myself? Isnít that was taking hours reading opinions on the internet is for? Joke.
I suppose I will end up trying 32mm and 38mm in the end, but was hoping someone would say ďI have found my 38s to be just as fast, like Rene Herse said, so slap on the 38s so you donít have to change your tires when you ride with your road mates THEN your gravel mates.Ē
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Old 10-01-20, 06:53 AM
  #138  
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I have read all the threads on this here ... and some people Will say exactly what you want to hear .... whatever that may be.

If I had some definitive answer .... but I don't believe there is one.

And I know .... good tires are expensive. And switching tires is a pain.

If you plan to ride a lot of gravel, you can certainly use 38s, and certainly keep up with pretty quick road rides on 38s .... you might have to work a little harder, but if you want to not compromise by changing tires then you have to compromise performance, either on- or off-road.
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Old 10-01-20, 07:05 AM
  #139  
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Originally Posted by Daniel S View Post
thanks for the reply. Try some out myself? Isnít that was taking hours reading opinions on the internet is for? Joke.
I suppose I will end up trying 32mm and 38mm in the end, but was hoping someone would say ďI have found my 38s to be just as fast, like Rene Herse said, so slap on the 38s so you donít have to change your tires when you ride with your road mates THEN your gravel mates.Ē
I've taken 35s and 38s (both Schwalbe G-Ones, very good tires) out on the group road ride (on short notice when I've had problems with the road bike or road wheelset). They're pigs in that setting. At steady speeds they rolled just fine, so paceline situations were no problem. Accelerating out of corners or even up little kickers was a noticeably different, and not in a good way, even though I'm of the sprinter-type and can usually close a gap in my group pretty easily. If your group is pretty steady in pace, maybe you'll happy with them. If your group is spirited and has frequent surges, you're probably not going to like them, unless you're too strong for your group and you need to spice things up because you're bored out of your mind.
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Old 10-01-20, 07:56 AM
  #140  
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Originally Posted by WhyFi View Post
I've taken 35s and 38s (both Schwalbe G-Ones, very good tires) out on the group road ride (on short notice when I've had problems with the road bike or road wheelset). They're pigs in that setting. At steady speeds they rolled just fine, so paceline situations were no problem. Accelerating out of corners or even up little kickers was a noticeably different, and not in a good way, even though I'm of the sprinter-type and can usually close a gap in my group pretty easily. If your group is pretty steady in pace, maybe you'll happy with them. If your group is spirited and has frequent surges, you're probably not going to like them, unless you're too strong for your group and you need to spice things up because you're bored out of your mind.
thanks. I think Iíll try some Continental GP5000 32mm on my gravel bike first and see if I can keep With my road group. I have 28mm GP5000 on my road bike, so I will be comparing apples to bigger apples at least.
my situation is that itís getting close to Being time to replace my road bike, but I recently got this shiny titanium ďgravelĒ bike. My gravel bike leans towards a road geometry....so, if I could keep up on 32mm slicks on my gravel bike, maybe I donít need a new road bike.
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Old 10-01-20, 08:06 AM
  #141  
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Originally Posted by Daniel S View Post
thanks for the reply. Try some out myself? Isn’t that was taking hours reading opinions on the internet is for? Joke.
I suppose I will end up trying 32mm and 38mm in the end, but was hoping someone would say “I have found my 38s to be just as fast, like Rene Herse said, so slap on the 38s so you don’t have to change your tires when you ride with your road mates THEN your gravel mates.”
My Rene Herse 38mm Barlow Pass tires aren't any slower on the road than my 28mm GP4000II tires they replaced, and they behave MUCH better off-road. They also ride much better on the road.

I have 55mm Antelope Hill tires on another bike (a touring bike). I haven't tried other tires on it yet, but my kid can ride it and kick my arse, so they aren't slowing him down substantially.

Last edited by wgscott; 10-01-20 at 08:10 AM.
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Old 10-01-20, 08:33 AM
  #142  
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Originally Posted by Daniel S View Post
thanks. I think Iíll try some Continental GP5000 32mm on my gravel bike first and see if I can keep With my road group. I have 28mm GP5000 on my road bike, so I will be comparing apples to bigger apples at least.
my situation is that itís getting close to Being time to replace my road bike, but I recently got this shiny titanium ďgravelĒ bike. My gravel bike leans towards a road geometry....so, if I could keep up on 32mm slicks on my gravel bike, maybe I donít need a new road bike.
That shouldn't be too much of a difference, but you may notice it here and there, 'specially if you're already on the edge at times. I rode with slightly oversized 30mm tires for a few years and moving to true-to-size 28s did result in a slightly snappier feel - it wasn't night and day, but the difference was there and it was enough for me to stick with the 28s (the same could be said about the comfort difference - there was a slight trade-off, but it was one that I was willing to make).
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Old 10-02-20, 03:33 AM
  #143  
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Originally Posted by Daniel S View Post
Hi. I now have a bike that can fit wider tires than the 28s I've been on and see you have gone from 28mm to 38mm. Strictly for road surfaces are you just as fast on your 38s as you were on your 28s? I'm thinking I'll go to 32s, but if you don't lose any speed going from 32 to 38, why not get the comfort? I've read plenty of "scientific" input, but wondering what your real world input may be.....thanks. First post.
I run 28mm WAMs on my Venge and 37mm WAMs on my custom steel bike. Riding position is fairly similar. If i had to guess, I'd say I lose about 15W or so overall between the fatter tires and lack of aero. For endurance riding @ Z2, it's not something i am too bothered about.

On hill climbs, the steel bike feels sluggish. Whether this is due to the steel frame or the wheels, I cannot say. Next week, I should build up my Factor and i will give it a go on a carbon frame and with fat tires - that should provide me with more clarity.

As of now, I think 37mm is a bit too wide unless you are riding really rough roads. I plan to settle on 30mm WAM on my Factor for daily riding.
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Old 10-02-20, 04:21 AM
  #144  
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I run 28mm Mavic Yksion Elite Guard tires at 6bar and I like them. Previously I ran Continental GP4000 23mm at 7bar.

I noticed the difference in comfort, but haven't noticed any loss of speed. I also noticed they grip better when cornering.
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Old 10-02-20, 06:32 AM
  #145  
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Originally Posted by Daniel S View Post
thanks. I think I’ll try some Continental GP5000 32mm on my gravel bike first and see if I can keep With my road group. I have 28mm GP5000 on my road bike, so I will be comparing apples to bigger apples at least.
my situation is that it’s getting close to Being time to replace my road bike, but I recently got this shiny titanium “gravel” bike. My gravel bike leans towards a road geometry....so, if I could keep up on 32mm slicks on my gravel bike, maybe I don’t need a new road bike.
I did this on my gravel bike. I didn't find it performed well mounted on the original wheelset. Bought a set of DT Swiss ER1600 wheels that work so well I retired my road bike.

Last edited by pennstater; 10-02-20 at 04:43 PM.
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Old 10-02-20, 12:03 PM
  #146  
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Originally Posted by wgscott View Post
My Rene Herse 38mm Barlow Pass tires aren't any slower on the road than my 28mm GP4000II tires they replaced, and they behave MUCH better off-road. They also ride much better on the road.

I have 55mm Antelope Hill tires on another bike (a touring bike). I haven't tried other tires on it yet, but my kid can ride it and kick my arse, so they aren't slowing him down substantially.
Well, I was warned someone would say exactly what I wanted to hear. How do you know your 38mm are just as fast?
Do you use a ride tracker for speed and it shows you that your 38mm are just as fast, or do you keep up with the group just as easily?
Thanks for the input.
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Old 10-02-20, 12:25 PM
  #147  
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Originally Posted by Daniel S View Post
Well, I was warned someone would say exactly what I wanted to hear. How do you know your 38mm are just as fast?
Do you use a ride tracker for speed and it shows you that your 38mm are just as fast, or do you keep up with the group just as easily?
Thanks for the input.
I would be willing to be that they're referring to a setting outside of a spirited group ride. On solo road rides, which I've also done on 35s and 38s, the time/power results that I've gotten haven't been obviously out of the normal range that I'd see with 28s or 30s... but solo rides are a lot different, much smoother, less dynamic and punchy. Being a few bike lengths slower out of a corner when solo means nothing; with a group, it can mean losing a wheel and getting dropped or having to dig deep to claw your way back.
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Old 10-02-20, 02:14 PM
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Originally Posted by pennstater View Post
I did this on my gravel bike. I didn't find it performed well mounted on the original wheelset. Bought a set of DT Swiss ER1600 wheels that work so well I retired by road bike.
good point. The wheel set will have a great effect. The I9s on my gravel bike are way better than the Giant hoops that came on my Defy though. Should actually be an advantage for my gravel bike.
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Old 10-02-20, 05:25 PM
  #149  
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Originally Posted by Daniel S View Post
Well, I was warned someone would say exactly what I wanted to hear. How do you know your 38mm are just as fast?
Do you use a ride tracker for speed and it shows you that your 38mm are just as fast, or do you keep up with the group just as easily?
Thanks for the input.
I commute to work and back on them (well, at least pre-COVID) so I have many miles of the same trip logged (Garmin) with each. Others here have done far more careful studies. I don't hardly ever do group rides. I am also not particularly fast, so it is possible there are differences that simply don't show up for me as I grind up hills.
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