I’ve got a new (used) bike and was wondering whether or not I have sufficient clearance to increase the tire width from 25 mm to 28 mm.
It might be a tight fit between the brake pads, but I guess I could just deflate the tires if necessary.
I’m aware that the current tires are on the wrong way, and I will exchange them for GP5000s either way.
by larespares
15 Comments
Forgot to write that this is a Focus Izalco Race, 2018/2019-model.
Hard to say just by looking at it but could be too tight. The rims are also quite narrow meaning the 28mm tire will likely expand more like a balloon outside of the rim, leading to a significantly larger radius of the tire on all sides. But I have no knowledge of the clearances of this model specifically so this is just by looking.
Hard to say. You could ask a local bike shop, they might even have old tyres for recycling to test the fit
Recommended minimum clearance is 3-4mm depending who you ask. Use an Allen key to gauge the current clearance. I’d say if you can fit a 6mm all the way round, you should be fine (additional 1.5mm width each side, 2-3mm tread center).
Also, rim brake bikes are super easy to reverse the front wheel tire: remove wheel, reverse it, put quick release in on the other side.
Plenty of room there.
Your front brake caliper isn’t done right, should be like in the back.
That said, I think you got more room on the back compared to the front. In the back it would probably fit, in the front is more questionable. Also, tires can stretch a little bit as they get older with use, also a thing to keep in mind.
Those look like the newer model brakes that are rated for 28 tires
Easily.
From first hand experience all tire/rim combinations are not equal, running tubeless can also change the fitted width too. The only way to really know is trial and error , in the meantime you could post the exact specs if the bike you and the wheels you have and see if anyone here has the same combination and what they use.
Plenty of room at the calipers. How do things look at the chain stays?
It’ll rub if it’s out of true or muddy
I think you’ll be OK. Brakes will not be a problem since they have lever to widen them when replacing the wheels. Do you know anyone with rim brakes using 28’s? If so, put their wheels on your bike to see if there’s ample clearance.
What is your inner rim width? Conti ultra sport measures more than it’s labeled size, say if it’s 25mm at 18mm inner width it would measure 28mm, unlike conti gp5000 it measures true to size, regards the rim width, if it’s 25 then it’s 25, I have all these tires and rim widths and I’m talking to you on an actual experience..
Front no, rear yes if the chainstays also have enough room.
I would consider Pirellis, 26 mm front and 28 mm rear. They are as good as GP5000.
This involves two issues.
Looks like a tire that’s 3mm wider would be fine in terms of brake caliper clearance, fork clearance, and seat stay clearance.
But a 28mm GP5000 tire won’t necessarily be 3mm wider than your current tires. Tires marked a specific width often vary between models, even within the same manufacturer.