Author Topic: XM Carbon Speed - "Gran Tourismo" Frameset  (Read 175268 times)

Serge_K

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #240 on: July 24, 2026, 06:45:25 AM »
I'm running a GP5000 35, no problems. Everywhere I look there's at least 3mm air, more like 5mm

Edit: I just checked, running Xmcs wheels with 26mm internal

Lol that topic never stops being confusing... 1st of all, thank you.
Do you have calipers to measure the measured size of your tyre (inflated at riding psi)?
Are you eye balling these clearance measurements ("air"), or is it measured? The easiest method i found is using allen keys. A 4mm allen key either fits, or doesnt. if it fits, you try 5, it either fits, or doesnt. my LTK 268 has a 34.4mm tyre w 4mm either side, measured w calipers & 4mm allen key. I have no contact on the left side, and contact on the right side. 5mm key simply doesnt fit on either side.

Last: is it the new gp5000 35C, or is the all season version? (not sure it matters, but might as well be thorough).

Edit from me from the future as per below.
Assuming that GP5000 35C All Season and the new fast one measure the same, then 26mm IW rim --> c.38mm tyre + 4 + 4.
--> can't really clear the GP5000 on a rim where you dont have a lightbulb effect (reports of 40-41mm on rims that result in a 38-40mm external width).
Also with the caveat of ETRTO safety shenanigans of 35C on wide rims that are still up for debate.
To be fair, maybe 3mm clearande is enough, btw. Never tested that. all i know is that ISO standard is 4mm and that 3mm isnt.
Also to be fair, a lightbulb effect at the front is a no no for me, but at the end of the day, on the rear wheel, it's dirty air already, so maybe it's not the end of the world is the tyre to rim transition is sub optimal.
Conclusion: kind of works, i guess?
« Last Edit: July 24, 2026, 07:54:13 AM by Serge_K »

rsw42

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #241 on: July 24, 2026, 07:28:01 AM »
Haven't got calipers with me, but I've gotten the allen keys out, just for you...
5+ mm everywhere except next to the chain stays, there it's 4mm...

Using the GP 5000 AS TR with TPU inner tubes... On XMCS 26 internal rims (not checked, I believed Peter on that one)

Greetings from the roadside of the TDF

Dewa6975

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #242 on: September 02, 2026, 11:10:41 AM »
Hello everyone,

For information, I am selling a 0mm offset seatpost if anyone is interested please see my post here :

https://chinertown.com/index.php/topic,7535.0.html

Serge_K

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #243 on: September 11, 2026, 11:17:13 AM »
Are there more people riding this frame? i feel like if there's 200+ pages on the 18D, there should be more pages on this thread.

Mlesna

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #244 on: September 11, 2026, 12:09:27 PM »
I ride it and I love it. Havent got it creek-free, yet, but that is most likely a me problem. The geometry is absolutly perfect for me.

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moodyedge

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #245 on: September 12, 2026, 04:48:31 AM »
Are there more people riding this frame? i feel like if there's 200+ pages on the 18D, there should be more pages on this thread.

Agreed...Doesn't seem that popular.


I ride it and I love it. Havent got it creek-free, yet, but that is most likely a me problem. The geometry is absolutly perfect for me.

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What's creaking? I will not tolerate that sort of thing.

gribs

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #246 on: September 12, 2026, 06:35:36 AM »
Are there more people riding this frame? i feel like if there's 200+ pages on the 18D, there should be more pages on this thread.

It's hardly surprising when it's a lot more expensive. I bought one of Hambini's frames off him and have had it built up for a couple of weeks (Ultegra and XMCS 58mm wheels). It feels to ride smoother and slightly faster than my Light Carbon LCR017 but that could just be the new bike effect. The overall build quality and fit and finish does feel noticeably better.

Mlesna

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #247 on: September 12, 2026, 09:09:17 AM »

What's creaking? I will not tolerate that sort of thing.

My cockpit, if I really work it and the right side of my crank (I think). But like I said, I am not at all a reliable mechanic, so I assume that is root cause.

moodyedge

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #248 on: September 15, 2026, 02:16:42 PM »
Anybody over 6 ft and have the 58 and find the seat tube angle too slack ?

Currently ride a 73 degree with a 20/25mm offset post.

I know some of the geo echos the pinarello x but wondering how significant the measurements that don't are...also what the ride is like as the X is designed to be comfortable on rou7ght roads. Is the X really worth 5k for a frameset compared to this?

There aren't many other frames that will give me a shorter reach and higher front end for long rides, so the market is quite sparse.

Serge_K

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #249 on: September 15, 2026, 03:44:03 PM »
Anybody over 6 ft and have the 58 and find the seat tube angle too slack ?

Currently ride a 73 degree with a 20/25mm offset post.

I know some of the geo echos the pinarello x but wondering how significant the measurements that don't are...also what the ride is like as the X is designed to be comfortable on rou7ght roads. Is the X really worth 5k for a frameset compared to this?

There aren't many other frames that will give me a shorter reach and higher front end for long rides, so the market is quite sparse.

Pretty sure Peter sells a zero offset seat post, no?
I think the Pinarello X has a lot more stack. I'm not aware of any OEM frame with that geometry, unfortunately (or maybe some really unappealing unaero purely endurance frame i might have missed).
You could stack up with a positive stack cockpit though, that's my next purchase. I'm riding Peter's grevil clone this summer, it has a few cm more stack than my road bike, and it's a no brainer for aero position. High stack for tall dudes is the future, i'm sold.

If you find the Gran Turismo too harsh, max out the tyres? more air more comfort, difference is dramatic in my experience.

davidishere

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #250 on: September 15, 2026, 11:55:41 PM »
Hello!

Thanks for all the contributions here - They were part of the reason I decided to try the frame.  I've run into a minor issue I'm hoping to get some help with - The handlebars have either not shipped with their bolts, or I've somehow managed to lose them.  I'm working with the folks at Carbonspeed to try and resolve the problem, but I was wondering if anyone had any suggestions on aftermarket parts that I might be able to source more quickly.

My handlebars do not appear to have any threaded inserts, and seem to rely on a sleeved nut to fasten as there is no threaded hole to screw a bolt into.

I've tried some aftermarket parts by Risk - An M5 sleeved bolt/nut and found that the sleeved nut was too large in diameter to fit through the hole.  The part I tried is 'RISK RT111 Titanium M5 Stem Rear Lock Bolt Set for Road MTB Integrated Handlebars' if the explanation is unclear.

Can folks that have built this frame comment on:
- Whether or not their handlebars required a similar bolt to fasten
- Any suggestions on an alternative that I could consider using?

Thanks in advance.

Serge_K

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #251 on: Today at 01:18:07 AM »
Hello!

Thanks for all the contributions here - They were part of the reason I decided to try the frame.  I've run into a minor issue I'm hoping to get some help with - The handlebars have either not shipped with their bolts, or I've somehow managed to lose them.  I'm working with the folks at Carbonspeed to try and resolve the problem, but I was wondering if anyone had any suggestions on aftermarket parts that I might be able to source more quickly.

My handlebars do not appear to have any threaded inserts, and seem to rely on a sleeved nut to fasten as there is no threaded hole to screw a bolt into.

I've tried some aftermarket parts by Risk - An M5 sleeved bolt/nut and found that the sleeved nut was too large in diameter to fit through the hole.  The part I tried is 'RISK RT111 Titanium M5 Stem Rear Lock Bolt Set for Road MTB Integrated Handlebars' if the explanation is unclear.

Can folks that have built this frame comment on:
- Whether or not their handlebars required a similar bolt to fasten
- Any suggestions on an alternative that I could consider using?

Thanks in advance.

Sounds like they forgot to ship you the metal bits indeed. It would make sense to have 1 bolt on 1 side, and a sleeve on the other to receive the bolt thread. Usually it's 2 different allen key sizes. Peter is OEM, which means they make the carbon bits, but they obviously order the metal bits from someone (a wheel relies on lots of suppliers with hubs, spokes, nipples, bearings..., a handlebar on fewer), which also means someone has to remember to add them in the box...
Given how safety critical that it, unless you live near a hardware shop that happens to have all the sleeves in the universe (or unless Peter gives you exactly the spec of the sleeve - sourcing the bolt is easy in comparison), i would wait.
If you install the wrong stuff, you might 1. crack the carbon in that area and 2. crash.
Shit happens, unfortunately. The West shipped all our manufacturing to China, now good luck finding hardware like that at the drop of a hat.

moodyedge

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #252 on: Today at 04:49:42 AM »
Anybody over 6 ft and have the 58 and find the seat tube angle too slack ?

Currently ride a 73 degree with a 20/25mm offset post.

I know some of the geo echos the pinarello x but wondering how significant the measurements that don't are...also what the ride is like as the X is designed to be comfortable on rou7ght roads. Is the X really worth 5k for a frameset compared to this?

There aren't many other frames that will give me a shorter reach and higher front end for long rides, so the market is quite sparse.


I hear pinarello aren't all they are cracked up to be.

TIME have a new endurance geo biker with 40mm tyres. £3600 for a frame seems a bit much, but are they worth it?

Buying bikes is such a mine field.