Hello everyone. I was hoping someone out there could recommend the best (best rolling most aero) tires to race on my Hed Jet 60/90 C2’s. I am currently using the new Vittoria Evo Corsa CX (23) with latex tubes and was wondering if I am giving up aero or rolling resistance to another tire choice, and if so how much. I have spoken to the folks at HED and they said they recently got some unexpectedly good aero numbers with the Conti Attacks but I’m not sure how the rolling resistence would offset the aero advantage. When I asked them they couldn’t tell me.
Thanks for any help you can offer and sorry if this topic has been covered already.
I’m running Conti Supersonics on mine and am very happy with them. Super light, aero, very low rolling res. (due to a thin tread and no puncture belt). They’re a race-only tire, but if you want to fly…
I’m running Conti Supersonics on mine and am very happy with them. Super light, aero, very low rolling res. (due to a thin tread and no puncture belt). They’re a race-only tire, but if you want to fly…
That tire isn’t bad but continental has one thats even faster:
Yeah, stiff tires with harder rubber and super-high PSIs do well in drum tests…not that well in the asphalt jungle. I switched over from some Michelin Pro Races and am quite happy with the change.
Thanks for the link but that thread deals with the H3 which is more narrow than the wider 23mm C2 rim on the new Jets. I wonder if the Aero TT has the same benefits on the C2 rim?
I have no rigorous test data to show to prove this, but I have found no “noticable” difference between running a bonty 19 TT and a VFR 19 on my C2 rims. The difference I have noticed is that the bontys are not paper thin and hold up much better. Chip seal does not cut them, in other words.
My times at local weekly TTs is about the same for both tires. i have read te VFR is not the aeroest(for some reason).
While the wings do not mate up as nicely as on the H3, it is pretty similar. The C2s just have that little bevelled area beyond teh top of the rim that other rims do not have.
I set a PR by 20 seconds with the bonty TT on a less than still day, and that was for a 15 min extremely rolly course(avg speed 26mph vs flat 29mph)
Of course i have also noticed that the wheel covered FP60 does better when the wind against ya’ll is on the drive/flatter side, which it was that day. I also had on a new CSSS.
Long rambling story short, bonty tire works well with C2 rim, in the 19 size.
Have you found that the Aero TT’s is best in a 19mm on the C2 rather than in a 23mm? Also, do you think the TT’s could be used as a dual purpose race/training tire or are they a race only tire?
Get the 19s, at least for the front. I think others have shown the 23 does not fit very well at all. I personally use bonty race x lite in the rear at 23.
It is just my opinion, but I feel the 19 TTs are robust enough for everyday use, at least in teh front. I’ve probably got close to 2500 miles on one of mine(now on race wheel C2) newer one I have on H3. On the C2, the tire is narrower than the rim when inflated. On the H3 the tire is slightly wider than the rim.
I do use mine for everyday riding on the TT bike which is 80-90% of my rides this year.
It is just my opinion, but I feel the 19 TTs are robust enough for everyday use, at least in teh front. I’ve probably got close to 2500 miles on one of mine(now on race wheel C2) newer one I have on H3. On the C2, the tire is narrower than the rim when inflated. On the H3 the tire is slightly wider than the rim.
Have the tires “squared off” at all with those high miles on them. Part of the good aerodynamics of the tires is their shape - a flat spot on the centerline might negatively affect the aero performance ?? I have one on a H3 clincher front but only use it for racing.
not much if at all. compared to the new one on the H3, it looks pretty similar, 'cept for the fact that it is spread a little wider.
I have really never had a problem with front tires squaring off. they tend to crumble due to age prior to that. or get a nasty gash from my inattentive riding.
I think I need to send you the wheel with tire for testing this winter
I am usually at around 105-110. Don’t pay enough attention to get it exactly the same each time. Same pressure on the H3. I did run less one time, but forgot to mark down any info on feel or speed.
I don’t generally ride it as long as you. A long weekend ride on it will be 80 miles. For my usual 40-50 mile rides, I can’t really say i notice any difference in feel between these tires and pro3 or conti4000black chili tires. My comfort issues are more between the shoulders or saddle area. I don’t feel jarred per se, though the litespeed is a more plush ride than the felt.
I am 168 currently, so that probably makes some difference compared to you Bob.
My biggest complaints about the C2 wheels(90s) is the amount of noise they make(fairing vibrating against spokes is my guess) and teh water retention problems in the rain. I’ve have tri folks move over saying “car back” to their buddies as I pass on the darn things. Chip seal is louder than smooth pavement.
Get the 19s, at least for the front. I think others have shown the 23 does not fit very well at all. I personally use bonty race x lite in the rear at 23.
It is just my opinion, but I feel the 19 TTs are robust enough for everyday use, at least in teh front. I’ve probably got close to 2500 miles on one of mine(now on race wheel C2) newer one I have on H3. On the C2, the tire is narrower than the rim when inflated. On the H3 the tire is slightly wider than the rim.
I do use mine for everyday riding on the TT bike which is 80-90% of my rides this year.
Thanks for the info on the TTs. How does the race x lite pro hold up as an all around training/racing tire and is there a reason why you are not using the 19 TT’s all around?
rear wheel air is already pretty dirty, rxl has much lower rr per amf. the rxl is pretty robust given its thiness, but I do put on a pro3/conti4000 with butyl tube on the rear when I have more than 1 week between TTs or if I plan a long training ride. the bontys cost more for me, as i haven’t found a cheap source yet compared to pro3s I have gone through 1 rxl already…squared and too thin to trust in a race.
not much if at all. compared to the new one on the H3, it looks pretty similar, 'cept for the fact that it is spread a little wider.
I have really never had a problem with front tires squaring off. they tend to crumble due to age prior to that. or get a nasty gash from my inattentive riding.
I think I need to send you the wheel with tire for testing this winter
Thanks - I haven’t seen much wear on front tires as well. I did some testing comparing the Crr of a Velo Flex Record and RXL Pro tire on 3 rims of varying width including a C2 but didn’t see much difference at all. Possibly I can find a C2 rear wheel around here and test the AW 19 on it - easy enough to do if I have the wheel.
