Continental GP 5000 woah wait what...
11-03-23, 06:47 PM
#1
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,899 Times
in
849 Posts
Continental GP 5000 woah wait what...
so I got in on the BTD deal of the day where these where $47.99 per tire..so $40 off per tire. seems like a good deal. they show up today and I pulled them out of the box and in the box is paper work saying not to use them with lightweight or latex tubes...WTF. thought they were supposed to be a higher performance tubed tire.
11-03-23, 06:52 PM
#2
serious cyclist
Join Date: Apr 2009
Location: Austin
Posts: 21,147
Bikes: S1, R2, P2
Mentioned: 115 Post(s)
Tagged: 1 Thread(s)
Quoted: 9334 Post(s)
Liked 3,679 Times
in
2,026 Posts
I have never looked at those info booklets. That's weird though.
Likes For Bah Humbug:
11-03-23, 07:15 PM
#4
Senior Member
Join Date: Dec 2019
Location: 757
Posts: 11,255
Bikes: Madone, Emonda, 5500, Ritchey Breakaway
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 10238 Post(s)
Liked 5,185 Times
in
2,226 Posts
They come with a booklet? All I run on me road bikes is GP5000. I have no idea what my tubes are, whatever I grab at the shop, and I have never had a problem. You should be GTG. Pretend you didn’t see the booklet. Problem solver.
Likes For bampilot06:
11-03-23, 07:32 PM
#5
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,899 Times
in
849 Posts
Likes For jadmt:
11-03-23, 08:06 PM
#8
ignominious poltroon
Join Date: Jan 2022
Posts: 4,046
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 2241 Post(s)
Liked 3,443 Times
in
1,802 Posts
Take it to the logical extreme -- run them tubeless.
11-03-23, 09:20 PM
#10
Senior Member
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 2,799
Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,025 Times
in
723 Posts
I've run them two seasons on my daughter's bike with latex tubes and haven't had to change a flat, never would have checked a manual to see if there was an unacceptable tube for a decent road tire.
11-03-23, 11:27 PM
#11
Zoom zoom zoom zoom bonk
Join Date: Sep 2006
Location: New Zealand
Posts: 4,624
Bikes: Giant Defy, Trek 1.7c, BMC GF02, Fuji Tahoe, Scott Sub 35, Kona Rove, Trek Verve+2
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 551 Post(s)
Liked 722 Times
in
366 Posts
Don't forget to change them out before they reach the km number on the box too!
11-04-23, 03:58 AM
#13
Senior Member
Join Date: Jan 2005
Location: Baltimore, MD
Posts: 5,376
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 2485 Post(s)
Liked 2,956 Times
in
1,679 Posts
Found this post in a thread on the WeightWeenies site:
"The context for that warning, at least from the Continental tyre mounting instructions I've seen, is '...for rim brake bikes'.
Mounting Instructions
"The concern behind the warning is about overheating of lightweight tubes caused by continual, prolonged braking during a descent. The linked document gives some good, and some very bad - a rim strip doesn't protect an innertube from rim sidewall heating - additional advice on reducing that risk."
Also saw a post that mentioned that tubeless GP5000 tires weigh 90 gm more than the tube type. News to me. That difference, plus the weight of the sealant, wouldn't be offset by the lack of rim lips in tubeless rims, maybe, if your goals in riding tubeless include having significantly lighter wheels.
"The context for that warning, at least from the Continental tyre mounting instructions I've seen, is '...for rim brake bikes'.
Mounting Instructions
"The concern behind the warning is about overheating of lightweight tubes caused by continual, prolonged braking during a descent. The linked document gives some good, and some very bad - a rim strip doesn't protect an innertube from rim sidewall heating - additional advice on reducing that risk."
Also saw a post that mentioned that tubeless GP5000 tires weigh 90 gm more than the tube type. News to me. That difference, plus the weight of the sealant, wouldn't be offset by the lack of rim lips in tubeless rims, maybe, if your goals in riding tubeless include having significantly lighter wheels.
Likes For Trakhak:
11-04-23, 04:43 AM
#14
Happy With My Bikes
Join Date: Sep 2020
Location: Oklahoma
Posts: 2,187
Bikes: Hi-Ten bike boomers, a Trek Domane and some projects
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 884 Post(s)
Liked 2,308 Times
in
1,118 Posts
Sounds like the lawyers make them print those lest the tubes assplode.
__________________
"It is the unknown around the corner that turns my wheels." -- Heinz Stücke
"It is the unknown around the corner that turns my wheels." -- Heinz Stücke
Likes For Chuck M:
11-04-23, 05:11 AM
#15
Senior Member
Join Date: Apr 2019
Location: UK
Posts: 1,404
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 682 Post(s)
Liked 453 Times
in
338 Posts
My goals in running tubeless are limited to;
1. almost zero time spent on the side of the road
2. 15psi less
3. upper body training from mounting them
Never really considered weight.
1. almost zero time spent on the side of the road
2. 15psi less
3. upper body training from mounting them
Never really considered weight.
11-04-23, 07:52 AM
#16
Advocatus Diaboli
Join Date: Feb 2015
Location: Wherever I am
Posts: 8,639
Bikes: Merlin Cyrene, Nashbar steel CX
Mentioned: 14 Post(s)
Tagged: 1 Thread(s)
Quoted: 4737 Post(s)
Liked 1,533 Times
in
1,004 Posts
What makes those instructions pretty strange, is Conti's own Race Light tubes are 65g. So which tube-type tire models are the Race Light tubes for if not the 5p5k series?
Likes For Sy Reene:
11-04-23, 11:56 AM
#18
Full Member
Join Date: Sep 2007
Location: Seattle
Posts: 327
Bikes: Litespeed, O'Brien, Specialized, Fuji
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Likes: 0
Liked 15 Times
in
9 Posts
Not new, I looked at some 4000SII here from 2018 and the booklet says the same thing about 70g tubes.
Also, the top flap on the box seems to infer the treadwear indicator will be gone in exactly 4859km.
Also, the top flap on the box seems to infer the treadwear indicator will be gone in exactly 4859km.
11-04-23, 12:28 PM
#19
climber has-been
Join Date: Dec 2004
Location: Palo Alto, CA
Posts: 7,111
Bikes: Scott Addict R1, Felt Z1
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 3432 Post(s)
Liked 3,567 Times
in
1,793 Posts
Yeah, that's the "fear of rim brake melting the tube" CYA language.
I use both latex and thin TPU tubes with GP5000s and rim brakes, never had a tube problem. My only accommodation is to use my brakes as little as possible.
I use both latex and thin TPU tubes with GP5000s and rim brakes, never had a tube problem. My only accommodation is to use my brakes as little as possible.
__________________
Ride, Rest, Repeat. ROUVY: terrymorse
Ride, Rest, Repeat. ROUVY: terrymorse
Likes For terrymorse:
11-04-23, 02:48 PM
#20
Senior Member
Join Date: Jan 2007
Location: Eastern VA
Posts: 1,724
Bikes: 2022 Fuel EX 8, 2021 Domane SL6, Black Beta (Nashbar frame), 2004 Trek 1000C for the trainer
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 270 Post(s)
Liked 447 Times
in
266 Posts
I’ve been running GP5000s with latex tubes on my Domane. No issues. One Rema patch also with no issues. The sidewalls are getting sketchy. Going tubeless when the current skins wear out. By spring.
11-04-23, 03:04 PM
#21
ignominious poltroon
Join Date: Jan 2022
Posts: 4,046
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 2241 Post(s)
Liked 3,443 Times
in
1,802 Posts
11-04-23, 06:41 PM
#22
Senior Member
I also have many miles on my latex tube/GP5000 combination. No problems thus far.
11-04-23, 08:35 PM
#23
Senior Member
Join Date: Jun 2021
Location: Australia
Posts: 824
Bikes: 2002 Trek 5200 (US POSTAL), 2020 Canyon Aeroad SL
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 313 Post(s)
Liked 682 Times
in
328 Posts
It's a "rim brake safety" thing probably handed down from their legal department.
I've run both Latex and ultralight butyl tubes with Conti GP4000/5000 series tyres without issue (but I don't often descend epic mountain passes while on the brakes).
I've run both Latex and ultralight butyl tubes with Conti GP4000/5000 series tyres without issue (but I don't often descend epic mountain passes while on the brakes).
Likes For tempocyclist:
11-05-23, 06:48 AM
#25
Senior Member
Join Date: Mar 2021
Posts: 1,995
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 2700 Post(s)
Liked 486 Times
in
351 Posts
theres a bunch of reasons to want to minimize how much you brake, but the way you phrased it threw me off.