I knew a friend of mine who had pair of Bontrager Aeolus on his madone which cracked after he went into pot holes when racing , he got a factory replacement from Trek because they were under warranty. Another friend had a Trek Singletrack 970 fitted with
Bontrager Corvair rims, he later changed those after 10 years because they need to be trued too often and they didn't have the qualities of the mavic sup, ub control and cd (ceramic braking coating). He later bought a pair of
Mavic XM719 rims that he had assembled with hope hubs and since 10 years he never had to true them despite his very agressive riding style.Maybe the quality of Bontrager rims is not that stellar. On my two Trek MTBs I have Mavic D521 rims laced to Hope RS4 hubs, they are some of the best wheels I have ever had.