GrandPrix 5000 (tubes) tires with hooked 22C rims - how wide?

[fulton]

Dear All

Does anyone here use GrandPrix 5000 (tubes) tires with hooked 22C(22mm inner) rims? Can you tell me how wide the tire is when it is mounted?

[Beebsta]

I just mounted some GP5000 in 28 mm size on my DT Swiss ERC 1000 wheelset that has rims with internal width of 22 mm and the tire measures around 28-29 mm. I will double check tomorrow.
However, a 25 mm GP5000 might stretch more on the same rim and a 30 mm might not stretch at all.

[hannawald]

My 28C GP5000 clincher on a 23C rim was 30mm (Bontrager rim). I would say between 29 and 30mm on yours.

[UrgentDelay]

viewtopic.php?f=132&t=174930

[fulton]

I just mounted some GP5000 in 28 mm size on my DT Swiss ERC 1000 wheelset that has rims with internal width of 22 mm and the tire measures around 28-29 mm. I will double check tomorrow.
However, a 25 mm GP5000 might stretch more on the same rim and a 30 mm might not stretch at all.

Helo

gp5000 tubes right? Oke please measure it. I would buy it to the dt swiss erc 1400 (22c) rims. Thank you. what pressure are you using?

[jayjay]

28mm with TPU tubes on 22mm rims -> 29,8mm

[Beebsta]

Yes, I am talking about a tubes setup. I just measured again and is 29 mm at 5.5 bar. I am like 85 kg and looks like 5.5 bar is fine for me.
Also, brand new tires, just 80-90 km and measured with an analog vernier caliper.

[fulton]

Thank you. if I want to pay attention to the aero aspect, I might be better off if I chose 25 gp5000 in advance. am I correct? If the speed at which I like to travel is 33-35 km/h.

[Beebsta]

Well, DT Swiss optimized the rims on ERC for 28 mm wide tires. In my case the transition from rim to tire side is smooth, the tire is 29 mm WAM and the rim is 28.5 mm. You cannot even see the difference in width. If you plan on riding 25 mm wide tires, maybe the ARC wheels are better suited as those are optimized for 25 mm.

[fulton]

Yes. and you didn't think it was tlr with latex? Maybe latex holds the air better in this case...

I hesitate between two tires. gp5000 28mm + tpu. or Pirelli p zero race 28mm TLR with latex.

[fulton]

Well, DT Swiss optimized the rims on ERC for 28 mm wide tires. In my case the transition from rim to tire side is smooth, the tire is 29 mm WAM and the rim is 28.5 mm. You cannot even see the difference in width. If you plan on riding 25 mm wide tires, maybe the ARC wheels are better suited as those are optimized for 25 mm.

How easy is it to install gp5000 28mm tires on erc 1100 rims? I'm thinking of a roadside repair here..

[Beebsta]

I hoped I will not have to resort to use any tire levers but I failed. With tire levers was okish, a little bit if sweating and swearing but I did it in 2-3 minutes.

[fulton]

I hoped I will not have to resort to use any tire levers but I failed. With tire levers was okish, a little bit if sweating and swearing but I did it in 2-3 minutes.

Why didn't you want to use tire levers? Rim rim damage or pinching?

I think I will order 2 gp5000 28mm tires. I dare not accept the tlr. I'm afraid if he doesn't close, he'll ruin my clothes too. I'd rather fix a bug

[Beebsta]

The answer is rim damage. I am more like an XC guy that used aluminum allow wheelsets in the past and I have switched to road bikes, this is my first carbon wheelset and I was afraid I might be too brutal with a tire lever
I think you are hungarian so should be easy for you to order from Bike-discount. They had great prices on GP5000s in December.

[fulton]

I just mounted some GP5000 in 28 mm size on my DT Swiss ERC 1000 wheelset that has rims with internal width of 22 mm and the tire measures around 28-29 mm. I will double check tomorrow.
However, a 25 mm GP5000 might stretch more on the same rim and a 30 mm might not stretch at all.

Helo, please check this: viewtopic.php?f=132&t=175134
how is the front wheel turning for you? (can you make a video about it for me)?