2017 Kona PenthouseAnyone know what the biggest size tires you can get away with no interference? On the stock rims. Currently has 700x30 tires on it. 700x32??? Please Help!

There is no general consistency between tire sizes, so a 700x30 in one brand may be the same size as a 700x32 in another brand.

However, look at your bike. Critical points are fork clearance, as well as clearance around chainstays and the brake bridge (disc brakes? that would make it easier).

a 32mm tire will be about 2mm taller and 1mm wider (each side) than a 30mm tire.

35mm tire would be about 5mm taller and 2.5mm wider (each side) than a 30mm tire.

But, of course, everything will vary somewhat.

Fenders?

[QUOTE=CliffordK;20807843]There is no general consistency between tire sizes, so a 700x30 in one brand may be the same size as a 700x32 in another brand.

However, look at your bike. Critical points are fork clearance, as well as clearance around chainstays and the brake bridge (disc brakes? that would make it easier).

a 32mm tire will be about 2mm taller and 1mm wider (each side) than a 30mm tire.

35mm tire would be about 5mm taller and 2.5mm wider (each side) than a 30mm tire.

But, of course, everything will vary somewhat.

Fenders?

Thanks for the knowledge. Oh no fenders or disc brakes

Oh, one other issue with rim brakes is looking at how wide the brakes open up for removing the tire. You can always deflate the tire when mounting/removing, or remove a brake pad, but those methods are a pain.

I'm not seeing photos of all the tight areas, but the crown looks pretty short.

Hmmm, looking online, it looks like the brake is up and out of the way, but the crown is a little short. You might want to stick with the 30's.

Keep in mind that tires/tubes expand as they heat up. What fits now in cool/cold Temps very likely will not have enough clearance in warmer, hot temps. One of my bikes I can ride 28s when it is cool but once the temp gets into upper 60s they no clear, 25s are the max for tires I have tried.

how do they market this bike as "versatile" with such a small clearance at the fork crown?

Check your distance you now have between the brakes when fully opened and the tire, if its tight then you probably won't have enough space; having said that most bicycles come from the factory with tires that are in the middle range of what the rim and the bike can handle, which should give you at least a 2mm leeway toward a wider tire. One poster mentioned fenders, that does play an important part on whether or not you can go up one size.