I’m getting ready to set up my ENVE Foundation 45s for the upcoming road season and debating whether to run 28s or 30s. Either tire would be Continental GP5000 S TR, running tubeless. Wheels are going on a Cannondale CAAD 13, so sticking to the manufacturers maximum size of 30mm. Thoughts?

Name: How wide is too wide?
Uploaded: 2024-04-05T15:45:01Z
Description: I haven’t done a tire bake off on my wheels, but these guys did at two representative powers on nearby roads: [How wide is too wide?] [IMG_4508] 32 tires for the win, on my wheels.

Everyone above is correct. 30 (or possibly wider) is the better option if you can match the wheel profile to your tire size. You’ll pay an aero penalty for going wider than your wheel though. It’s not enough to rule out other considerations but could make a difference in certain conditions. My v…

[image] Junk_Miles: I never argued about aerodynamics or weight of bigger tires @Junk_Miles , I know you asked what data supported the notion that 28’s are the clear choice…so just to reiterate: 1.) The rolling resistance between 28’s and 30’s is going to be at best mW. No material differen…

Silca calculator suggestions are useless, because they don’t take the rim width into account. The pressure for a tyre installed on some old 17 mm rim is totally different than for a tyre on 25 mm rim.

A 25 mm tyre will measure just over 27 mm on the Enve foundation wheel. The 28 will be closer to 30 mm. I use a 25 mm front and 28 mm rear as I also like to do time trials on my road bike where I’ll average 42 km/h+ so aero is important. I’m not ready yet to buy wide wheels (mine are only a year o…

[image] Brennus: And if you want to know whether 28mm tires or 30mm tires are better…go with the 28’s. The data clearly support that choice and, as this thread demonstrates, the only argument for the 30mm tire is that you will ‘feel better’ after riding for a ‘long time’. That’s subjective, not …

[image] AgingCannon: Your argument ignores power losses on the narrower, higher-pressure tires due to suspension effects as the tire’s reduced compliance increases the bike’s “bouncing” (for lack of a better word) over road imperfections No I’m not ignoring it. I just know what it actually i…

I haven’t done a tire bake off on my wheels, but these guys did at two representative powers on nearby roads: [How wide is too wide?] [IMG_4508] 32 tires for the win, on my wheels.

[image] Brennus: No I’m not ignoring it. I just know what it actually is. Your communication does not make that clear. Your graph is about the reduction in rolling resistance, which has nothing to do with suspension losses. Rolling resistance and suspension losses are both components of the t…

[image] WindWarrior: 32 tires for the win, on my wheels. And given how close the times were, I’d have personally chosen the 34mm tires for greater comfort… especially for “longer gran fondo type events” where the OP wants to balance performance with comfort.

[image] AgingCannon: Note that suspension losses increase with pressure. The chart he posted included impedance loses. Did you look at the graph? Nobody going to resolve differences until you take your wheels and tires outside and test.

That’s not the correct interpretation of that graph. See these tests for example: [7_91f90827-965c-47dc-8f2f-9b21787ba83c_1000x] I’m just going to link the post so I don’t add anything in my own words. [image] Part 4B: Rolling Resistance and Impedance We explore breakpoint pressure in…

Which tire width? (28mm vs 30mm)

Equipment

WindWarrior April 5, 2024, 3:45pm 63

I haven’t done a tire bake off on my wheels, but these guys did at two representative powers on nearby roads:

32 tires for the win, on my wheels.

2 Likes

Topic		Replies	Views
Who's done the wider tyre road experiment? Equipment tires	173	21371	April 5, 2024
What tire size are you running on the road? Equipment	42	2031	October 3, 2023
Ideal tire size for road Equipment wheels , tires	37	7712	October 13, 2024
Are wider tires really faster in real life? (25c vs 28c) Equipment wheels , tires	30	62295	August 25, 2021
25 vs 32 mm fast road tires Equipment	25	9677	June 28, 2021

Which tire width? (28mm vs 30mm)

Related topics