Schwalbe G-One Speed 30mm on Cervelo R3

7 replies · 1,954 views

geofharries
27 posts
#1Mar 9, 2022, 3:42 PM
I have a 2018 Cervelo R3 that is listed as having room for a max 28mm tire. I’ve run this size for years and feel I could squeeze something bigger (and grippier) in there.

My rims are carbon, tubeless and 19mm internal width. Running rim brakes.

Dotes anyone have experience using slightly wider tires than listed on this particular bike?

0
stu
646 posts
#2Mar 9, 2022, 6:57 PM
I do not have that bike but I'll suggest you can measure the clearance by finding the largest hex wrench which you can slide into the narrowest gap. Then allow maybe 3mm on each side.

The Challenge Strada Bianca Pro and a few other tires are available in 30 mm width. There's also a good selection of road tires in 32 mm and cyclocross tires in 33 mm. Good luck!
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ljsmith
762 posts
#3Mar 10, 2022, 10:34 AM
You need to be very careful when trying to stuff wide tires on a carbon frame. A tire may look like it has plenty of clearance, but while riding small pebbles, dirt and mud can get between the tire and frame and slowly wear away the paint and eventually the carbon. If you are going to do it, be sure to put some helicopter tape on the insides of the chainstays. Also keep in mind that you might have to deflate the tires when mounting or removing wheels to get past the rim brake pads. A Google search did yield this article by Cervelo which seems to say you are okay with a 30mm.

https://www.cervelo.com/en/further-clarity-on-tire-clearance

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jfranci3
126 posts
#4May 10, 2022, 8:24 PMedited
geofharries wrote:
I have a 2018 Cervelo R3 that is listed as having room for a max 28mm tire. I’ve run this size for years and feel I could squeeze something bigger (and grippier) in there.

My rims are carbon, tubeless and 19mm internal width. Running rim brakes.

Dotes anyone have experience using slightly wider tires than listed on this particular bike?

Probably late. They are true to size on 19c ish wheels or a bit larger. the current ones are slow anyway. Try a challenge Strada Bianca 27c or GK SS
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geofharries
27 posts
#5Aug 3, 2022, 7:13 PMedited
Quick follow up.

Last month I bought and am now riding a pair of Schwable One 30mm tires on my Cervelo. There is sufficient room front and rear with only a minor brake adjustment. I needed to install them semi-deflated but that was not a big deal.

Just having the extra volume, however small does feel noticeably smoother.
0
stu
646 posts
#6Aug 3, 2022, 7:31 PM
geofharries wrote:... Just having the extra volume, however small does feel noticeably smoother.
Uh oh, now you've tasted the Kool-Aid. Next time you'll try a 32 mm tire, then when you're sure a 35 mm won't fit you'll start thinking about swapping the frame.

I've been there - 25 mm for decades, then 28 mm for a few years, then 32 mm for a year, then a new bike. After getting up to 48 mm I figured out I'd gone farther than I needed for road use.
1
geofharries
27 posts
#7Aug 3, 2022, 7:38 PM
Haha. I can totally see that.

What tire size are you riding now?
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stu
646 posts
#8Aug 3, 2022, 8:58 PM
geofharries wrote:What tire size are you riding now?
I'm riding the 36 mm Strada Bianca Pro on pavement. It's given me the best combination of speed, comfort, handling, weight, and durability compared to the 32 mm GP5000, 35mm Urban Taraxagum, 38 mm Barlow Pass Extralight, and 40 mm GravelKing+.

When I plan to get off paved roads I've used the 40 mm G-One Allround, 40 mm Marathon Almotion, 43 mm GravelKing SK+, 44 mm Snoqualmie Pass Endurance, and 45 mm Cinturato Gravel H. I don't ride anything technical so anything over 40 mm is probably more than I need. In particular the Cinturato Gravel H at 540 g and 49 mm (on my rims) is overdoing it.
1

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