ACS523i 0 Report post Posted January 4, 2012 Hi We had this issue with our 523i schnitzer, and I don't want it happening again in our 540i, where the camber on the back is such that it chews out the inside of the back tyres - so you come to a warrant, glance at the outside which have 5-6mm of tread left - and end up being told your down to the canvas on the insides. Is there a cost effective solution putting new rear shocks etc in it?? (we have the 540i with the EDC suspension) Cheers Steve Quote Share this post Link to post Share on other sites
BM WORLD 1258 Report post Posted January 5, 2012 i would be checking all the suspension arms , bushes and ball joints they all wear out , also the e39 have adjustments for camber in the rear etc. but if the bushes/arms have not been changed in the last 80,000km i would say they would need doing. i have some if needed Quote Share this post Link to post Share on other sites
hotwire 352 Report post Posted January 5, 2012 Depends also on the tyres you are running. I had Toyo Proxi 4 18's on & wore three pairs of rears to canvas on inside edge before I spat the dumby. I would put a new pair on the front & swap front to rear. Rears were getting no more than 15k/12 months each time. Car has sedate driving too. Had several wheel alignment checks by a mechanic with a brain on his machine, where I even got him to dial out a little neg camber. Still inside wear. Nothing wrong with the car. Got talking to Jonno on here. He confirmed to me (as I suspected) they ( the Toyo's) were a soft compound tyre. He had a new Chinese tyre available (can't remember what it is offhand) with aparently a higher than usual silica content. Against my usual judgement for Chinese tyres (apart from my trailer), I got a pair of these off him & put on the rear. Asymmetric as opposed to directional. This just over two years ago & when I recently looked, they still have 50% wear left right across the tyre. Done about 30k's too. Car is not a race car & not driven like, but they still seem to perform ok. This does prove though - tyre variations will cause this problem. The Toyo's are still on the front & still quite ok in that position. I am not suggesting Chinese tyres as the answer. I fully understand the variables in tyre qualities/perfomance/noise etc but merely pointing out that the higher performance/softer compound tyres are a compromise in wear patterns on the rears of these cars when fitted with low profile tyres. Quote Share this post Link to post Share on other sites
hotwire 352 Report post Posted January 5, 2012 Don't dispute what you are saying Ron but... In my case - not running a "hard tyre" but certainly harder than the Toyo Less static neg camber will still alter the "total" neg camber under "squat" position, so will make somewhat of a difference. On mine, toe in was fine, squat & body roll was not the cause as the car is mostly driven by "other half" & she hardly pedals the thing. I rarely drive it. These issues were between 25km & about 70Km so worn components was NOT an issue. I do suspect too soft tyre wall though - judging by the strange wear patterns we got on the inside shoulder. In this car I was not interested in uprating all the suspension components, particually when all the OEM content was still quite ok, nor in hindsight did I need to. That said - I fully understand what you say. I also agree - a decent rated tyre will be the go. I am merely pointing out what I have struck. I am not in this case "masking" any failings of the car by fitting "hard" tyres. I was not in the mood either to experiment with $300+ tyres. Quote Share this post Link to post Share on other sites
