The Truth About Wide Tyres And Wide Rims On Road Bikes

The Truth About Wide Tyres And Wide Rims On Road Bikes

100 thoughts on “The Truth About Wide Tyres And Wide Rims On Road Bikes

  1. Lower pressures give pinch flats. How is that i said if you fall for it they have achieved what they set out to do.sell you more tyres. A fool and his money and all that…

  2. If we don't considerate the weight of the tyre, is it also true with even larger tyres then 28c, like gravel or travel tyres that could be up to 47 ?

  3. Years ago 23mm was considered the norm, 31mm is almost cyclocross. Here in Madrid with the Cobblestone 28+mm would be an attractive thing. I looked at Alberto's bike and he runs 26mm. I have been learning about tire pressure on my gravel bike and it takes a while to dial in, I never considered less pressure being a good thing before.

  4. I had 2.5 inch wide tires (max psi 45psi) felt like a heavy slow tank – slow and lumpy. Changed to 1.25 inch (at 95 psi) and MUCH faster & nimble. The only negative was the obvious less traction.

  5. I did a test against my mates top of the range Malone, with fat tyres against my 2002 principia with Michelin pro race 23s. We were going 10mph at top of 3% hill after 500yrds I was 50 yard ahead . He same weight as me too. Didn't expect to be so far ahead .

  6. Are w going to see 5” wide fat bike style tires on road bikes? I think the advantages of wider tires are limited by other factors.

  7. I just got onboard with this idea myself. I couldn't afford the ENVE wheels though, instead I got the new Boyd 36 Carbon rims built up with White Industries CLD Hubs. The Boyd 36 rims have a 22mm inner width and a 29mm outer and they recommend a 25mm tire which actually measures 28 when mounted. I dig the look and the feel is okay too, I'm not going to complain if the end result is less flats. But I don't feel the cracks and small objects like twigs and stuff when I roll over them now. The ride is smoother. Oh and I got the wheelset on Black Friday and saved $400. Awesome.

  8. I like the idea of added comfort. I’ve used 23s for years. Can I just swap them out for 25s on standard mavic cosmic rims?

  9. Wide tyres for comfortable and long tyre life but heavy weight and less efficient(Wide tyre had flexible with low pressure). Narrow tyres for efficient(low coefficient air drag, light, stiff with high pressure), but had less comfortable and tyre life. Same tyre and rim width is improve aerodynamics(Example: 23 mm tyre with 23 mm rim had smooth surface together). But need different sizes for different conditions. Thank You for video.

  10. GCN's goal seems to be to get you to watch more videos from GCN. I stopped watching this one at 2:15 while they were revealing the shocking finding that narrower tires have more rolling friction. Well duh, I hope so if pressures are equal. So pump those 23's up another 20 psi and get less rolling friction than the 28's! These people are dealing in half truths.

  11. The reason there is a trend toward wider tires is because the newest top of the line carbon frames, wheels and other components are stiffer than ever before. As such, these carbon bicycles transfer even the smallest vibration to the rider. Vibration is uncomfortable but also consumes energy that would be better used to move the cyclist and bike forward so vibration needs to be absorbed and damped before it causes the whole bike to vibrate. Pneumatic tires are the only remaining component that will act to absorb and damp vibration and thinner tires are not sufficient on the newest top of the line bikes. It's different with a beautiful old steel frame because steel is elastic, unlike carbon, so running skinny tires on these old bikes is fine and faster as long as they have 140 or 160 psi. The Tour de France pros are now running 25's and 26's at 100 or 120 psi whereas back in the day they ran 19's. It's because frames have stiffened that preferred tires have gotten wider.

  12. Stop saying "28c tyre". It is a 700c wheel with a 28mm tire. There was a 700a wheel and a 700b wheel but we use 700c now. What is a "c" that your tyre has 28 of them? There is no "c" on a tyre and everyone gets it wrong because they do not stop to think about what they are saying.

    Narrow tyres stink because the 25 and especially the 23mm get stuck in cracks, expansion joints and fall through sewer grates. Additionally, the higher pressures required to avoid pinch flats give a harsh ride and people look for new frames, padded pants, maybe an air hockey saddle to stop the pain. Inflations of over 90 psi are literally a pain in the arse and I have experienced it. I went to 28mm and 75psi years ago with Conti 4 seasons. I am looking into 32mm now because there are rough wood bridges that traverse swamps for hundreds of feet in my area.

  13. I have a question for the GCN show my bike has 25 tires on them. I cannot get a larger tire on the back of the bike but I think I could get a bigger one on the front like a 28. Is there any advantage or disadvantage to using 2 different size tires? Let me know thank you

  14. rolling resistance is a bitch to understand, thinner tires give to less structure the support less raised contact area, larger tires give you more structure to support less contact area.

  15. Emotional speaking is OK but for foreigners it's almost impossible to understand. My question is wether it worth to use Canyon suspension seat post on grave road? Does it save the ass?

  16. Where I live the roads are terrible, I often have flats… I love my road bike but I'm sick of the expense and effort to repair… Im gonna either try get fatter tires of just get a mountain bike.

  17. While you might think a wider tire is faster its not . I'ts just easier to pedal because you change the gear ratio with larger tires .To have one in the back make sense but to have one in the front doesn't it should be smaller. Continental got it right with the set that runs 22mm front 24mm in the rear but the biking community is fashion and trend orientated this won't make it. I'm 55 and to hear people talk about comfort in racing? theirs no such thing if you want to win. He's also selling high end rims that he didn't pay for.

  18. Bullshit. I’ve ridden everything from 20c’s to 28c’s on my road bikes, fixed geared or single speed bikes. Putting 28c’s on any of them slow them down compared to 23c/25c tires. The reason tri-athletes ride 20c’s is for their low rolling resistance. And if you underinflate a tire it rolls slower, that’s why we run tires with 130psi, sew-ups, etc., but if we run wider rims all of that is turned on it’s head? WTF? The cornering is correct as long as you are not under inflated then you can roll a tire; I’d have to ride them I guess.

  19. Soooooooo sick of the wider is better! People are so gullible and believe anything! Measure 31!? Might as well ride a trail bike! 50psi in a 28 mmr tire? That's basically running half flat. There is a reason for the max psi on the side of each tire. I am a heavier rider and and am using FLO 60mm rim's these days with 23mm tires. They expand close to 25 to basically match the rim width. That is as wide as any road bike would ever need. Would be a quite humorous for somebody with 31mm tires filled to 50 psi to pull up next to me with my 23mm's pumped to 120psi and ask to race. Guarantee you they would get smoked like a country ham every time! Stop believing theorys. You ride my set up, then ride a ridiculously wide set up with 50 to 80 psi, and you will fell like you are stuck in the mud! Riding 23's or 25's with max psi may be a bit stiff and uncomfortable, but they are also rock hard, which in turn means I NEVER flat either! 😳🚴‍♂️

  20. That is the biggest gripe I have with 23c is ride comfort at 100psi every bump and rock gets transmitted right up my spine, so I end up riding out of the saddle then in.

  21. Just ordered som continental Grand Prix 4 season 700c 28 for my cannondale.. Awesome they be here soon from wiggle .. plus a new videoed on my channel of them …

  22. here is a good video that really explains it well, you guys are off, repeating same marketing BS as everyone else:

  23. I ride 33c Soma Supple Vittesse mostly on roads with some dirt. Its a cotton tubular casing tire. Its like a magic carpet ride! Really fast, comfortable and grippy. These tires, on my fixed gear ‘cross bike need a cog 2 or 3 teeth smaller or I spin out. All this at no more than 60 psi. Id never go back to skinny tires. Best of both worlds!

  24. Failed to mention the cost of these wheels. In doing so most would have turned off instantly. Ridiculous.

  25. Instead of using a bike that's out of reach of normal cyclists, why not use one that's relavant to 99.9% of your audience😕😤 to prove the point

  26. It's not that complicated. Higher pressure gives lower rolling resistance. Narrow tires handle higher pressure without being over inflated. So to go faster you go with the narrowest tires you can tolerate for the road conditions. It's simply a trade off between rolling resistance and vibration. If vibration is too much of a problem you give up some of that low rolling resistance by going to a wider tire. Then you'll still be better off because the vibration reduction will outweigh the increased rolling resistance.

  27. That ”I really need a new bike” thing just bit me. I was never going to buy a new road bike until the cycling world got past that ridiculous skinny tire obsession. I think we’re there.

  28. I today equipped my aero focused endurance bike with the ENVE 4.5 AR that I got on a good deal and 30c Tubeless Schwalbe Pros. This is by far the best ride feeling I have had. I rode 100k on them without stopping once and it was fantastic. Cornering, stopping and accelerating, comfort and rolling was on point.

  29. I ran 28's in the 1970's. For the last 15 years or so I've settled on 40's. They're just more utilitarian, more comfortable and they wear longer. I couldn't care less about 4 watts, lol.

  30. Unless you're a fanboy, or you're getting paid to say 28+c tires are faster than 19/21/23c… then you know the truth here boys.
    Strict rolling resistance tests aren't real world and never will be… fuck off with this propaganda.

  31. Interesting stuff. I personally lower the tire pressure slightly down from 110 psi to around 85 – 90 because I find the ride SO much smoother and therefore faster.

  32. You've got 50 psi in those 28s?
    Sorry but that's unacceptable, the drag simply ain't worth it, no way and if anyone is that desperate, then get a frame that will deal with it. (cannondale synapse).

  33. FWIW My wife is absolutely obsessed with cycling, but not for fitness or speed or endurance, just for the sheer enjoyment of it (she'd hoped it would help with her weight but in fact it's made no difference at all, but that hasn't dampened her enthusiasm one bit). Anyway, when her last set of 25's wore down I persuaded her to go up to 28's because I thought she'd get a bit of extra comfort out of them. I wasn't expecting her to go any faster because she doesn't have the aero wheel to go with them and she's not really into speed anyway, but in fact her rides are now faster purely because she's more comfortable and less fatigued. Her bike frame can only support up to 28's or I'd try her on 32's

  34. Wow! This totally upends everything every bicycle book and magazine told me back in the 70s and 80s.

    Something tells me that one thing he is leaving out is that new materials are allowing this to be done. My guess is that with the materials from the 70s and 80s the skinny tire with high pressure was more efficient. But now, with new materials (about which I can only guess) it is possible to go for a wider tire and still get lower rolling resistance.

  35. So now everyone goes out and buys new frames to accommodate the new, 28, wheels and tyres…then someone 'discovers' 32s.

  36. So, you are saying that 32 mm with a 630 mm diameter wheel set is better. Eventually you'll figure out a steel frame, with a 2 x 5 crank set is better also, and you'll be smack dab, back in 1972. I always knew, in my heart, that my Korean made Sears "Free Spirit" 10 speed was the fastest bike EVER! So glad I never got rid of it 🙂

  37. Nicely explained, still for me is 28 tyre slower, than my current 23 pressured to 10 bar. Yeah, they are brick hard under such pressure, but since I ride on a very nice bumps free roads, it doesn't matter that much and the increased pressure sort of changes the profile in which you showed, how 28 is getting less resistance. It would, under same pressure, but that is just not happening.

  38. I remain to be convinced. As a regular cyclist, for many years cycling every day, I know when my tyres need more air because the bike feels like riding in treacle. But when I pump the tyres up again all is good. I am wondering whether this is a manufacturer's ruse trying to push us all to disc brakes so we can have fatter wheels? I also remember riding on 700 x 18 Hutchinson kevlar tyres and I remember them being very fast. The only downside though was you needed to get your wheels re-trued about once a quarter!

  39. Outside of better grip and cornering you can keep fat tires, I don't care what you say skinny rides quicker and snappier (Conti 19mm Tubulars).

  40. Randonneurs have known the secrets about higher volumes and lower pressure tires for decades. But then not very many ride for more than 5 or 6 hours, much less for 2 or 3 days.
    Ive rode fat sew ups on and off road back in the’70s. Skinny rock hard tires always seemed silly to me. I wish I could still afford those hand made silk tubs, wonderful magic carpet tires!!

  41. I can't handle this shit; first disc brakes, mechanical then hydraulic, then 25c tyres and more, and now even using 1x chainrings on the front. Mtbs are fucking all 29s now too. Why can't road logic and mtb logic work logically

  42. Disc brakes are NOT necessary to run bigger tires. There are plenty of fine rim brakes that work with them. You just need a frame that is designed for that combo. I rune 33s with good ruin brakes. Discs: great for mountain, maybe gravel and cross, otherwise a needless complication and added expense.

  43. I bought a 28mm tire yet when I measured it using caliper it measured about 25-ish mm. Is it normal? it's CST cheapo tire though.

  44. i just recently converted to carbon wheels and conti 28s, game changer for me. I went to 23s and then 25s for comparison but the 28s clearly the better roll for me, im slowly converting all my bikes to 28s.

  45. Decision Framework to switch to marginally wider tires of similar treads:

    1) less rolling resistance BUT just on less than perfectly smooth roads?
    2) less rolling resistance even at lesser pressure?
    3) marginally heavier?
    4) less body fatigue for biker?
    5) less mechanical stress on bike itself?
    6) better grip and cornering?
    7) more ability to take on rougher roads though not gravel?
    8) more puncture resistance at even lesser pressures?

    How much wider than 25 mm can you go before rolling resistance starts increasing? 30mm? 35mm?

  46. I went from commuting on 25's to 28's and finally to 32's on my cross bike.The fat tires ride SO much better on the screwed Detroit streets I ride on vs the skinnies I'll never go back.

  47. Set arbitrary standards, force everyone to accept them, and break the standard and go back to what they were doing before while charging a premium for it. That's the bicycle industry of late.

  48. Do not always think wide tires equal less rolling resistance, if you go too wide or lower pressure too much you will actually increase the size of contact patch and increase rolling resistance. So this also means the weight of the rider and how much they deform the tire also plays a role.

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