Originally Posted by Fentuz

from discussion with dealer, the cracks tend to happen by the spoke nipples at the rim apex (stress raiser).

i also understand that these wheels were supplied in 2007 with (edit) stelvio and durano soft supple tyres in 28-406 [MENTION=175934]120[/MENTION]psi max and from 2008, “allowed” kojak 35-406 @90psi max which are supple too.
however, some users pumped these up over 90psi as people did with road bike back in the day or/and fitted marathon 35-406 which are super rigid and created a fair load on the rim and when going through bumps and pot holes, stressed the rim leading to cracking…

just like suspension mount on cars when fitted with strong springs and big rims with low profile tyres….

basically, lack of compliance

https://www.world-wheels.co.uk/speedpro.htm
https://www.world-wheels.co.uk/09_musl.htm