From now onwards there won’t be any limitations on carbon rims
We are extremely proud to announce the launch of our new clincher tires (open tubulars) in the new SPS version (Sidewall Protection System), equipped with a special protection system that makes the clincher tires suitable for all carbon rims available on the market, regardless of the type or brand.
SPS protection reinforces especially the most delicate part of the clincher tire (open tubular) in order to solve the problems of compatibility with the carbon rims that have been spotted in the last few years.
Carbon rims are produced in a different way, unlike those in aluminium, and usually have a rough surface that is polished by some high level producers in order to avoid problems with the tires. However, not all of them are as careful and on these types of tires the constant rubbing of the tire on the rim tends to rip apart the thin threads that make up the clincher tire casing.
Also, as pressure at 6/7 atmospheres originally tended to make the sides of the carbon rim give, because of the pressure and the temperature, some producers of carbon rims started to reduce the height of the shoulder of the rim and to develop (to satisfy their customers’ needs to use higher pressures) bead seats with sharp edges to tackle the problem of holding the tire into its seat. As a consequence, the ETRTO regulations, which set the standard to fit the rim and the tire and ensure they work correctly and smoothly, have been disregarded.
Difference between an ETRTO standard carbon rim (left image) and a non standard rim.
As we cannot ascertain the compatibility of all the rims on the market and despite being a problem that may affect a minimum part of our customers, we must advise against the use of our clincher tires on all carbon rims. This is the reason why today we are very satisfied with our new solution that allows to choose any carbon rim without checking thoroughly how it was produced.
With the clincher tires equipped with the SPS system (Sidewall Protection System) – identifiable by the new tag and by the fact that once fitted on the rim some millimetres of a thin stripe come out of the border to guarantee full protection – no one will have to worry about the brand or the type of carbon rim.
All the range of Veloflex clincher tires is available in the SPS version and these models will gradually substitute the traditional version, which is fully compatible with any aluminium rim and with most carbon rims and will be still available while stocks last.