I'm not sure!!!! I know that sounds weird but I'm pretty sure it's front nearside but then the back nearside knocks straight after (not always but most of the time). I know these noises can reverberate and throw you off the scent!
As a for instance I had a rattle in my right ear the other day, window up, window down, hitting the pillar etc etc it turned out to be a drinks can in the centre console tapping against some lose change
Need some new tyres and an alignment in a couple of weeks so will investigate further, and update.
, I've got your alignment print out - never had probs with tyres (in 4 years) until I had inner wear in Oct, had an alignment and two new tyres and they've gone again after just 6k. Garage has been cool about it and reckon I must have knocked the alignment out prior to Oct and they re-aligned to factory settings. They are going to re-align FOC (to your settings) and give me one tyre FOC. They've got a link to your alignment post and their thinking is 'Thanks for the heads up'.
Pleased OE's (Old Engineer's) 159 OE (Original Equipment) has got him through his MOT. With regard to mine, although a recent acquisition, at a 102,000 miles I expected there to be a few "Teething" problems. Slight low, non - metallic knock (THUD) from the back end when pulling away a little too enthusiastically for a man my age and also when picking up drive from first to second. Humm!. Further investigation leads back to the four - Very big capital letters HYDRAULIC BUSHES. The technical description states their functions include "Elastokineamatic" - sic - Action. In the case of the large rear front bush, ordinarily, it is aiding dampening of minor transients which would otherwise be transmitted to the body work. However, when encountering a road surface where there is impact on the leading edge of the front wheels(s), this large bush, due to it's hydraulic design, compresses, not only increasing toe - in, but transferring the some of the impact; kinetic energy, to the tyre - through the tyre wall, which of course under these conditions are acting as damned big dampers. "Elastokineamatic action - Ta - dah.
The rear suspension Hydraulic front bush, is mounted obliquely. Once again, functioning normally, absorbing minor transients and filtering them out from the vehicle body. But with a frontal impact on the leading edge of the rear tyre(s), these Hydraulic bushes perform at least three additional tasks: 1) by compressing; force the wheel to retract, reducing the impact - a bit like a footballer pulling down a high crossed ball with a dead leg, withdrawing it as he gathers the ball. 2) as the bush compresses in its obliquely mounted housing, it counters any tendency to change the toe setting - moving back into its mount such that it creates a compensating element of toe - out. 3) Once again reduces the impact by "Elastokineamatic" transfer of energy to the tyre wall, further absorbing impact.
On now to these "Hydraulic Bushes. Having decided to take the Gt to Italy, I left the Q4 with Paul to finish off the little jobs, with no time pressures in place. He changed all oils, front diff/gearbox, transfer box and rear differential. At the same time had my wheels refurbished in Charcoal Grey - beautiful and fitted new discs, pads and bled the clutch and replaced the brake fluid for me.
Yesterday, having taken it back to him for a road test/inspection, to try to resolve this issue, I commented, "These Bushes are Hydraulic"
"Funny thing" is, he said, "When I was checking my work, I thought there might have been a leak as there was an oily substance on the cover protecting the rear near side suspension arm, I checked the bits I had just completed, but could not see anything obvious."
Quickly picking up the removed cover, sure enough, there was the outline of a liquid spill. The car had been in the dry, without exception. So there was some evidence as to the make up of these bushes.
I spoke to EB spares, great guys - never heard of such a thin but accepted, it was probably something Alfa might have done - they have long revered Alfa.
Spoke to an unusually helpful local Alfa Dealership: perhaps things are improving. They said they would contact Alfa direct. Forty minutes later, I get a Phone call from them. Alfa have confirmed these bushes are indeed Hydraulic, they are Oil - Filled.
As to whether they are unique, I doubt it, given the German involvement in this car. But Bloody clever. So tyre shredding is a function of some bushes not matching the design characteristics when new. Or in my case, a worn out old bush that just spilled its guts. New Arm on order. Expensive but perhaps the price will come down if more people replaced when they failed. and they are more likely to stay in production longer if they are seen as worth changing by owners as these cars get increasingly older.