[ Ссылка ]
HOW DOES RIM WIDTH AFFECT TIRE VOLUME AND PROFILE?
Tires of any specific width have a wide range of inner rim widths they can safely be mounted to, but which combination you choose will also affect the total volume and profile of the tire. While there is compatible inner rim width range for each specific tire section width, there are certainly also optimal suggestions for each pairing that are based on tire volume and profile. Please refer to the Tire/Rim Fit Chart for these suggestions. Always check our Tire/Rim Fit Chart to determine the compatible range of any tire or rim width before trying a specific combination.
General rules:
When we a design tire, we do so around a specific inner rim width that is most applicable and commonly used in conjunction with the tire width. This is also the combination in which we determine and name the width of the tire. However, that combination may not reflect the rim width you have on your bike or are now looking to upgrade your bike with.
Narrower rims will cause a tire to also have a narrower width, with less air volume within the tire, and a rounder tire tread profile than designed for.
Wider rims will cause a tire to also have a wider width, with more air volume within the tire and a flatter tire tread profile than designed for.
As a general rule of thumb, a 2mm increase or decrease of inner rim width will result in a tire section width increase or decrease of 1mm.
For example, our Exposure 30 tire has a tire section width of 30mm on a 19mm inner rim width, however it has a tire section width of 32mm on a 23mm inner rim width.
