- Joined
- Nov 27, 2004
- Messages
- 4,800
- Location
- Southampton
- Car
- 65 Plate E350 CDI Convertible, 2006 CLS 55 AMG, 1997 C230K, 1999 C43/55 AMG
Jeez. Under my watch, they never hit anything more than literally a couple of what I would class as not very deep potholes (I know exactly where they all are on my way to work and back). My confidence that they had never been down anything remotely tough (let alone make you wince) meant that I was very surprised when you told me one had gone on the weld and now the other!
Did they do it as part of the refurb?
I wonder if they just crack through use or slight bumps or whether the weld is not as strong as the strength of the original wheel...
I remember Developer John posting up that he had had crack(s) on his fronts.
I think BMW 19s went through this once upon a time although I imagine it is rife now all over the shop as wheels get larger.
Apart from the ride and handling on mine, that would be another reason to not go for 20" Vossen CV-3s like I was once going to...!
The guy who did the repair in the first wheel, said that most repairer's methodology of preparing and welding cracked alloys was flawed.
He explained that his method was to find the very end of the crack and drill a hole at the end of it, then grind right through the crack to the drilled hole so there would now a slit in the wheel 3-5mm wide, then prepare for welding the edges would be bevelled both sides of the slit, then welded up filling the slit using the appropriate filler rods.
He did comment that the previous repair on the inside of the rim hadn't been dressed and suspected the preparation had,nt been done correctly.
Though I was upset when they phoned to say one of the front wheels was cracked once I realised it was the previous existing repair had failed I was relieved, after my guy had said that about the previous existing repair.
I remembered only once hitting the front wheels well bumping off of quite high kerb but that was not the one that had cracked but the one my guy had done which made me feel very confident of what he had said to me and his ability
I think this is almost an accepted fact with these type of alloys because of their size/width, the low profile of the tyres, the state of UK roads. Also quite telling they always crack on the inside edge the edge which has the least support from the mounting face.