Originally Posted by alcjphil

It isn't the rim that might prevent using wider tires, it is frame clearance. Any 700c wheel can accept a range of tire widths,the wider the rim is,the wider the tire you can install. The 29" wheels found on many mountain bikes are actually the same diameter as road bike wheels, they are 700c by another name. The problem may be that the frame of that bike will not have sufficient clearance for any tire much wider than the ones it comes with. This is one of the flaws with online buying, you cannot examine the bike ahead of time. At a guess,looking at the pictures of that bike, it has tight frame clearance and you probably can't install tires any wider than 700 x 25, only 2 mm wider than the ones it comes with