Login required to started new threads

Login required to post replies

Tire height difference - 23mm and 25mm
Quote | Reply
Hi all, I have a Cube Streamer currently outfitted with the stock Fulcrum 7 wheels and 23mm tires. I have found a good deal on Fulcrum Quattro LGs which support 25mm tires. I am confident width won't be an issue but the rear tire is very close to the seat tube with the current 23mm tires. Do 25mm tires protrude further from the rim than 23mm ones? I was thinking of getting conti Gp4000s in 25mm to replace the same model in 23mm.

Thank you!
Quote Reply
Re: Tire height difference - 23mm and 25mm [pkenned] [ In reply to ]
Quote | Reply
what do you mean when you say the wheels "support 25mm tires"?

____________________________________
Swimming Workout of the Day: http://forum.slowtwitch.com/...ost=5784860#5784860;
Favourite Swim Sets: http://forum.slowtwitch.com/...m.cgi?;post=5004659;
Winner of the 2017 50 fly east coast Smackdown. http://forum.slowtwitch.com/...ost=6294538#p6294538
Quote Reply
Re: Tire height difference - 23mm and 25mm [JasoninHalifax] [ In reply to ]
Quote | Reply
Apologies, the rim width of the wheels is 23.2mm. The Fulcrum website says the minimum supported tire width is 25mm
Quote Reply
Re: Tire height difference - 23mm and 25mm [pkenned] [ In reply to ]
Quote | Reply
I would just put the 25mm tires on the Fulcrum 7 wheelset.
Quote Reply
Re: Tire height difference - 23mm and 25mm [jimatbeyond] [ In reply to ]
Quote | Reply
Thanks for your reply. The question remains though, even switching tires on the same wheelset I'm worried that if the 25mm tires are "taller" than the 23mm tires then they will rub against the seat tube.

I need new tires anyway, the ones I have are worn out.
Quote Reply
Re: Tire height difference - 23mm and 25mm [pkenned] [ In reply to ]
Quote | Reply
25mm tires will be taller.
Quote Reply
Re: Tire height difference - 23mm and 25mm [jimatbeyond] [ In reply to ]
Quote | Reply
You may probably screws which you can adjust to move the wheels back further.
Quote Reply
Re: Tire height difference - 23mm and 25mm [pkenned] [ In reply to ]
Quote | Reply
Yes 25 will be taller and there probably isn't a tire that is taller than the GP4000. I run 23s of similar width on my TT bike and I have to adjust the horizontal dropout screws all the way out to get a GP4000 to not rub. I would need longer adjuster screws to use a 25 GP4000

Sounds like you might have vertical dropouts now. If you really want to run the 25 the 4000 might not work.
Quote Reply