Last year I switched from 23mm tires on box rims to some 25mm Continental 5000s on some 2019 Zipp 303 rims and enjoyed the added comfort but ended up with a few pinch flats that I didn't love. So I thought, why not keep going and throw some 28mm on? So I bought some and they measure almost identically to the 25s using my Park Tools DC-1!
25mm tire: 27.7mm wide
28mm tire: 28.01mm wide
As for the height, it was kind of hard to measure the inflated height of the tire alone so I used the clamp to measure from the inside of the rim to the top of the tire:
25mm tire: 70.74mm
28mm tire: 69.72mm
Has anyone else experienced this?
If I'm aiming for optimum tire pressure using
https://axs.sram.com/guides/tire/pressure it looks like I'm using the same calculation for both, which just doesn't seem right.
