I've been running Vittoria Terreno 29x2.1 tyres for a while and getting on with them. They're the lighter, tan walled 'Race' version which I didn't weigh when I popped them on, but they were quoted at 600g. They're on a Singular Swift which I ride as a rather porky gravel bike (can't afford a new bike) at over 29lbs.
I picked up some anthracite walled, full TNT versions in a sale and was sure that these used to be quoted as 50g heavier on the Vittoria sight, but now the TNT versions aren't listed.
It turns out that the TNT version are about 700g, so 100g over the Races. Is this additional rotating weight going to be a killer for me (I'm currently in cardiac rehab. mode on the bike following a number of heart attacks) or will it be lost in the general porkiness of my bike?
On the up side the Races haven't held air to well and I'm hoping that the TNTs will be better at this and a bit more durable. It might just be a case of try and see.
I think the first few minutes after swapping you might notice it but doubt long term.
Don't think the extra weight will be "a killer"! Good luck with rehab.
Well, I've gone the other way, and stripped about 400g of the tyres on my Enduro, in the anticipation that I will, from now on prance up the hills like a deer that has accidentally eaten some speed...Has it? I hear you all ask with bated breath...
No, no it has not.
at 100g an end difference on a 29lb bike, you'd notice the tread (grip/drag) more than the weight.
but obviously, if you're not enjoying a climb, you'll be pointing the finger at anything!
Nah.
If there is a difference it’ll be due to a change in rolling resistance not due to the extra rotating mass. I’d say that 90% of blame that is laid on tyres being too heavy is actually due to the increased losses in the casings. More flexible and less damped casings suck up less energy - that’s why DH tyres are slow, not because they’re heavy.
Not at all.
I went from a (roughly) 1kg Magic Mary to a 1.35kg Version and couldn't tell at all just riding around (although it was much better pointed down).
Tread is a far bigger factor as others have said.
When I got my FS bike it came with DH/Enduro suitable tyres which basically killed me. The thing I found made the most difference was the compounds which literally sucked the ground (did what it was supposed to).
My every day road bike has ~400g 'commuter' tyres on it with latex tubes.
The 'good' road bike has same tubes but ~230g Continental GP4000s. The good bike certainly feels a bit quicker initially but once up to speed and spinning a long the difference is negligible.
I would say that IF you noticed a difference, it might be the thicker TNT casing adding resistance, rather than the weight, but maybe you could run slightly lower pressures to compensate?
Carcass and compound more important than weight.
Would you notice 200g anywhere else on the bike, do you notice if you are wearing clothes/shoes that are 200g heavier.
You may notice it on the front tyre when swerving about because of the forces but after a few minutes but it won't make any difference to speed/ride times.
I've gone the other way and lost around 190g per wheel ...
Has the change of tyre (from Trail to XC) been noticeable - absolutely 100%
Has the weight alone been noticeable - I dont know, never will know as I cant separate all the variables
Depends how much you weigh. If you're quite heavy, 200g extra won't be that noticable. If you're very light, 200g is a lot. That said, on a bike that's already 29lbs, 200g is nothing. If the bike was 22lbs, 200g is a lot.
The difference between "light" and "not light" is definitely more important than the amount of weight though... 100g if it's just 2 different not-light tyres, not a big deal. 100g if it takes you over whatever your magic "oh that feels nice" limit could be.
(I miss using light tyres- can't do it now, my riding destroys them. But I just put a lighter front onto the hardtail for a race and man, what a difference. I don't think much at all about weight when choosing my everyday tyres but that's just because they're all some minor variation of "heavier than I would like", none of them will ever feel light.)
Stop weighing stuff would be my advice
Stop weighing stuff would be my advice
Especially if you have a heart condition. Just relax, and focus on the rehab, not the tools.
There will be a difference, you might feel it, the actual speed difference will be (yours and bike's weight-100gm)/(yours and bike's weight) - around 0.1%?
No - not on 29lb swift. Just ride it and enjoy it, safe in the knowledge you have a slightly tougher tyre on should you take a bad line.
XC race bike and at the pointy end? Maybe then, but even then at world cup level the bigger blokes are using the TNTs with only the lighter riders on the race sidewalls.
XC race bike and at the pointy end? Maybe then, but even then at world cup level the bigger blokes are using the TNTs with only the lighter riders on the race sidewalls.
Because a puncture could cost minutes whereas a slightly heavier tyre will cost a few seconds
On your comment about holding air.. I’ve found the TNT Vittoria to be excellent tubeless.. go on without tools, seat first time easily and hold air well..
in fact put a pair of new ones on last weekend and they’ve been sitting at the pressure I put in them since then without any sealant and without losing any air.!
Agree, I have used TNT MTB and TNT cyclocross tyres and they always went straight up with a track pump and never lost air.
On your comment about holding air.. I’ve found the TNT Vittoria to be excellent tubeless.. go on without tools, seat first time easily and hold air well..
+1
I would go as far as saying they are the easiest tubeless tyres we've got.