I asked HED what was the best tire for a set of HED3 clinchers. The response I got was “Best is the continental attack for front and rear.”
I don’t see this tire tested on the AFM spreadsheet… Has anyone here on ST ridden this tire? Any general comments on this tire in general, or tires for HED3?
Thanks gang!
I asked HED what was the best tire for a set of HED3 clinchers. The response I got was “Best is the continental attack for front and rear.”
I don’t see this tire tested on the AFM spreadsheet… Has anyone here on ST ridden this tire? Any general comments on this tire in general, or tires for HED3?
Thanks gang!
Interesting…did you query about the Bontrager Aero TT tire and how that compared?
My guess is it would test out similar to the GP4000S (due to the similar construction), with the front perhaps having slightly higher Crr due to it’s narrower width.
I can’t imagine though that either of those tires would be as aerodynamic as the Bonty Aero tire, and they’ll most likely have higher Crrs…so, I’m not really “getting” that recommendation…
Ok, I followed up my e-mail to the HED representative with the following reply:
Do you know how the Conti Attack would compare to the Bontrager Aero TT? Seems like with the thinner front tire, the attack would have a slightly higher rolling resistance (and be a bit slower). (Though I don’t have any experience with the Conti Attack.)
And he replied with this:
*Bontrager is good, Attack is better. Don’t know about the rolling resistance. *
I have not run them both in the same session, but we always check our results for repeatability ( and it is always good) – Attack is more aero than bontrager.
So it seems that HED at least knows about the Bontrager tire. It’d be cool to see if AFM data supported this. So for now, looks like I’m ordering a set of the Attack tires. I’d be willing to send them in for testing. Let me know.
Ok, I followed up my e-mail to the HED representative with the following reply:
Do you know how the Conti Attack would compare to the Bontrager Aero TT? Seems like with the thinner front tire, the attack would have a slightly higher rolling resistance (and be a bit slower). (Though I don’t have any experience with the Conti Attack.)
And he replied with this:
*Bontrager is good, Attack is better. Don’t know about the rolling resistance. *
I have not run them both in the same session, but we always check our results for repeatability ( and it is always good) – Attack is more aero than bontrager.
So it seems that HED at least knows about the Bontrager tire. It’d be cool to see if AFM data supported this. So for now, looks like I’m ordering a set of the Attack tires. I’d be willing to send them in for testing. Let me know.
What if the (likely) higher rolling resistance of the Attack tire more than offsets its aero advantage over the Bonty? Then you’d be slower. My question is why does HED ignore rolling resistance when it recommends tires for its wheels? As I recall the marketing material for the Bontrager Aero Wing tire combines the effect of both aero drag and rolling resistance when making comparisons to other tires. That is considerably more useful. You might ask HED how many grams of aero drag difference they measured. Then maybe you could wing it with A. Coggan’s rule of thumb in converting drag to watts to Crr.
One other question would be whether there is any significant difference in flat protection between the two.
We’ve used them and find them ok. But then we are Philistines when it comes to tyres. We can’t tell what we are riding and whether or not one tyre is worse, or better than another. And we don’t care much either.
And he replied with this:
*Bontrager is good, Attack is better. Don’t know about the rolling resistance. * **
Hmmm…one would think that the rolling resistance would be something important to know before making a tire recommendation for a particular wheel, no?
When they say the Conti is “better”, it’s also important to know by how much, and at what yaws.
I have not run them both in the same session…
Hmmmm…
…but we always check our results for repeatability ( and it is always good) – Attack is more aero than bontrager.
Again, by how much…and seeing as how they haven’t tested them “head to head”, what’s the estimate of error between setups? Do they run a “control” setup to measure “setup to setup” repeatability?
So it seems that HED at least knows about the Bontrager tire. It’d be cool to see if AFM data supported this. So for now, looks like I’m ordering a set of the Attack tires. I’d be willing to send them in for testing. Let me know.
You’ll have to arrange that with AFM 
Bontrager is good, Attack is better.
An update for ST at large: I just spoke with HED today about this issue in the context of a Jet 6 and was told the same thing. There was still no comment on Crr.
As I recall the marketing material for the Bontrager Aero Wing tire combines the effect of both aero drag and rolling resistance when making comparisons to other tires. That is considerably more useful. “Usefully” giving figures for cycling into a headwind, thus emphasising its good aero properties whilst suppressing the effect of its less good rolling resistance.
Interesting. I’ve had three conversations with Hed in the past week regarding tires for the H3 and C2 Jet disc. The Bontrager was recommended twice for the H3, and the Attack wasn’t mentioned at all. Wonder if something just happened, or is in the works. Coincidentally, I don’t see 23mm RXL Aero TT tires on the Bontrager website store. Those were recommended for the C2 platform wheels. Color me confused.
no i seen a mention of attacks being advised some months ago on a different site…does anybody have a h3 with cont attack mounted to see pictures hard to imagine it being more aero than bonty tt
.
And he replied with this:
*Bontrager is good, Attack is better. Don’t know about the rolling resistance. * **
Hmmm…one would think that the rolling resistance would be something important to know before making a tire recommendation for a particular wheel, no?
When they say the Conti is “better”, it’s also important to know by how much, and at what yaws.
And (to state the obvious) what widths they were comparing. IOW, perhaps they were speaking of the (nominally) 22 mm wide Continental vs. the (nominally) 23 mm wide Bontrager.
Interesting. I’ve had three conversations with Hed in the past week regarding tires for the H3 and C2 Jet disc. The Bontrager was recommended twice for the H3, and the Attack wasn’t mentioned at all. Wonder if something just happened, or is in the works. Coincidentally, I don’t see 23mm RXL Aero TT tires on the Bontrager website store. Those were recommended for the C2 platform wheels. Color me confused.
I think that Bonty may be in the process of rolling out a redesigned Aero TT tire…probably something with a width somewhere between the 19 and 23…
Mostly pure speculation on my part.
I think that Bonty may be in the process of rolling out a redesigned Aero TT tire…probably something with a width somewhere between the 19 and 23…
Mostly pure speculation on my part.
“Mostly”?
I think that Bonty may be in the process of rolling out a redesigned Aero TT tire…probably something with a width somewhere between the 19 and 23…
Mostly pure speculation on my part.
“Mostly”?
Interesting. I’ve had three conversations with Hed in the past week regarding tires for the H3 and C2 Jet disc. The Bontrager was recommended twice for the H3, and the Attack wasn’t mentioned at all. Wonder if something just happened, or is in the works. Coincidentally, I don’t see 23mm RXL Aero TT tires on the Bontrager website store. Those were recommended for the C2 platform wheels. Color me confused.
Oh…as far as why the guys at Hed may have changed their recommendation for the H3? Either they got some good data out of some tunnel runs…or maybe they decided to listen to what I had told them here:
http://weightweenies.starbike.com/forum/viewtopic.php?f=14&t=62797&p=576283
I think that Bonty may be in the process of rolling out a redesigned Aero TT tire…probably something with a width somewhere between the 19 and 23…
Mostly pure speculation on my part.
“Mostly”?
Thanks…I guess?
(BTW, I just figured out what you really meant the first time. If true, that is good news…or at least maybe not such bad news after all.)
ha thats good reading on the weight weinies site all the way up till…27th oct when it appears to end i presume you got no response or furthered with any testin on c2 rim…or maybe the fact that hed “might” be comin out with a new tt tire suggests there was a response??