Tire Width - To Suit ENVE 6.7's

[Splash]

Hi all.

i have the newer smart 6.7 enve tubluar wheelset.

i spend long hours in the saddle up to 4.5 hours at a time on the bianci oltre xr.

what is my best tire width - 23mm or 25mm?


splash

[oldpotatoe]

hi all.

I have the newer smart 6.7 enve tubluar wheelset.

I spend long hours in the saddle up to 4.5 hours at a time on the bianci oltre xr.

What is my best tire width - 23mm or 25mm?


Splash

25

25 all around better than any 23mm bike tire, IMHO, whether clincher or tubular. More volume, more durable, better suited to a wider tubular rim.

I've heard lower rolling resistance than a 23..altho that's not why you use tubulars.

[Splash]

why is this 25mm tire width preferred oldpotatoe?

Even though Enve recommend 22-23mm tubulars, how will a 25mm width better suit the profile of the 6.7 enve tubular rim (compared to the 23mm width)?

splash

[Rob1519]

23 on the front and 25 on the rear

[Splash]

interesting rob1519.

care to elaborate on this setup?

do you use this same setup?

rim size - 26mm wide for front wheel and 24mm for the rear wheel.


splash

[Splash]

other thoughts from others on tire widths?

splash

[Splash]

interesting in the last post of this link - stating that 25mm is not really suited to these rims:

http://forum.slowtwitch.com/gforum.cgi?post=4337630;


thoughts?


splash

[Rob1519]

interesting rob1519.

care to elaborate on this setup?

do you use this same setup?

rim size - 26mm wide for front wheel and 24mm for the rear wheel.


splash

25 on the rear for the reasons stated by @oldpotatoe and as roughly 60% of rider/bike weight is on the rear. The 25 can be run at a lower pressure and provide a better ride.

23 front for better aerodynamics- smaller frontal area and airflow at transition of tire to rim

[cfox]

Enve's recommendation of 23mm tires for the Smart wheels is based on aerodynamic tests, not some optimal tire size to fit their rim bed. 25mm tires will fit fine and be more comfortable/practical for the average dude. I've spoken to Enve about this, and the engineer I spoke to uses 25's.

[ergott]

Both sizes work fine with those rims. Having said that, I had no problem doing centuries on the 6,7s with 23mm tires. The ride quality is excellent. Since the tire sits more into the rim in a deeper bed, a 25mm tire will help avoid the rim bottoming out on an impact. That would be my biggest reason for recommending 25mm if you think that's an issue.

[Splash]

thanks guys .

recommended tubs for this wheelset?


splash

[uber]

I have been riding 23 FMB tubulars on my 6.7's. Love the ride.

[uber]

Correction: they are listed at 22, but they are supposed to be a bit wider.

[Uncle Jam's Army]

Veloflex Carbons in 23mm.

[Splash]

25 on the rear for the reasons stated by @oldpotatoe and as roughly 60% of rider/bike weight is on the rear. The 25 can be run at a lower pressure and provide a better ride.

23 front for better aerodynamics- smaller frontal area and airflow at transition of tire to rim

ideal psi with a 23 front tubular?

ideal psi with a 25 rear tubular?

splash

[Joachim]

This is getting so painful lol. Where is Christian when you need him... Ok, it depends. It depends on your weight, your road surface etc etc. A 140lb rider will run different pressures than a 200lb rider. Riding over really rough surfaces will require different pressures than smooth.

[christian]

Go with 25mm tubulars front and rear. Preferably Vittoria Corsa SC or Veloflex Roubaix, as they are gumwall, which is way better looking.

Start around 95/105 psi front/rear and adjust per weight and preference.

[FlashUNC]

Experiment. There's no hard and fast rule. As others mentioned, too many variables at play on something like PSI -- rider weight, road conditions, weather conditions, etc etc.

And go 25mm front and rear.

[Splash]

thanks guys.

i weigh 191lbs and ride on roads that are not perfectly smooth.

i currently have the conti comp tubular tires with butyl tubes.

25mm tire seems to be a popular choice.


splash

[teleguy57]

Go with 25mm tubulars front and rear. Preferably Vittoria Corsa SC or Veloflex Roubaix, as they are gumwall, which is way better looking.

Start around 95/105 psi front/rear and adjust per weight and preference.

Slight hijack -- love the Vflex Roubaix; Christian, how are you finding durability on the SCs?

[oldpotatoe]

ideal psi with a 23 front tubular?

ideal psi with a 25 rear tubular?

splash

No ideal. I weigh .1 offa ton and use 95psi both wheels. 25 Corsa Elite, 23 Corsa CX, Conti sprinter, OPEN Corsa pave 25s

[oldpotatoe]

This is getting so painful lol. Where is Christian when you need him... Ok, it depends. It depends on your weight, your road surface etc etc. A 140lb rider will run different pressures than a 200lb rider. Riding over really rough surfaces will require different pressures than smooth.

No need to answer or even read it...

[happycampyer]

19lbs and not great roads are two factors working against each other. I would start out at 100-105psi, and work your way up/down from there. slowtwitch.com is full of tri geeks, so they're going to be focused on optimizing aerodynamics—which makes sense given that 6.7's are deep-section aero wheels. An equivalent thread on weightwenies.com would recommend that you sell the 6.7's (too heavy), buy the 3.4's and put the lightest weight 19mm tubulars you can find on them.

25mm tires front and rear will give you the best ride quality, and your choice of specific tire should depend on your budget, preference for durability vs. ride quality, etc. The good thing about tires (or the bad thing depending on how you look at it), is that they are a wear item so eventually you will need to replace them, which will give you an opportunity to experiment.

[beeatnik]

buy the 3.4's and put the lightest weight 19mm tubulars you can find on them.



Not sure about that. Those guys seem to be more about rolling resistance when it comes to tires. There's been a seismic shift in acknowledging that practicality and performance can trump weight savings (60 page threads on Colnago c59/60 and all the BSA love).

[happycampyer]

Not sure about that. Those guys seem to be more about rolling resistance when it comes to tires. There's been a seismic shift in acknowledging that practicality and performance can trump weight savings (60 page threads on Colnago c59/60 and all the BSA love).I was being facetious—my point was that one's recommendations will depend on one's biases—aero vs. weight vs. comfort, etc.

[kgreene10]

Aerooweenie.com has links to a compendium of tire aero and crr data. As others have said, 23s are more aero and 25s have (marginally lower) crr and are more comfy. I race 23s and train on 25s.

[sfscott]

Veloflex Arenbergs. 25mm

[happycampyer]

Veloflex Arenbergs. 25mmMy personal favorites too. The 22mm (now 23mm) Carbons felt better than most 25mm tubulars from other brands, and then Veloflex finally came out with a 25mm tire of their own. Imo they roll as nicely as the 25mm silk FMBs, and are cheaper and a lot easier to maintain.