I’d like to run 28mm tires but the clearance is 1mm in some spots, whereas the 25mm obviously a safer option. Thoughts, worth the risk? Guess it might make some difference that the 25mm fit the rims nice and flush and it’s a full aero bike (I really don’t make full use of the aero though).
Every second photo is 28mm for reference.
by BrainVelocipede
7 Comments
Little bit o flex, little bit o dirt, little bit o centrifugal force, you might be making contact. I dunno, I would go 25s.
I had to make this choice on my bike. As long as nothing goes wrong you could getaway with the 28’s. However, if you are 220lbs + (like me) or a cautious person : ride the 25’s. Are those 404 Firecrest wheels? I think ZIP and HED both recommend 25’s on their wheels when they were first introduced wider inside channels.
28c. I run 28c on my CAAD12 rim break and clearance is very tight. When it’s heavy rain, I even squeeze some Crud 3 clip-o mudguards on front and rear for even less clearance.
I haven’t had a problem with it. Continental GP4000 for what it’s worth.
The closest thing is the rear seat stays and front derailer cable pull.
Its true, I own an older road bike with similar clearances and even though I tend to push larger tire sizes, I find running the safer tire choice keeps you from potentially damaging your frame. 3mm difference isnt an insane jump anyways (at least thats what I tell myself haha).
How about the rear chainstay by the triangle bottom bracket area? If you run these I would 3M wrap anything close to the tire, you’re going to get dirt and debris. You might also get some flex depending on your wheel and also because you’re using traditional QR skewers (vs. Thru axle) which me be close to rubbing. I would probably go 25 though
What brakes? I have br8000 running 28s , and will try and squeeze 30s next go around
https://preview.redd.it/04ci9ey3h7ud1.jpeg?width=1975&format=pjpg&auto=webp&s=bc549eccb9a04a8dd3557afe7954d8eca6e73b65
We’re tight blud