Tyre wear advice

I would welcome any advice.... I have done 8000 miles over the last 18 months including a couple of track days and a Euro trip that included the Stelvio and some great alpine roads on what were an new set of pzeros I expect you will tell me I am obviously not trying hard enough Fronts are still at 3-4 mm with some scrubbing on the outside edge of the nearside. Rears however suddenly appear to have worn (may have been after recent Bedford Autodrome day) The wear is across the same area of both rears, but worse on the nearside (see below) I have not seen anything like it before - the edge is ok (yellow) - the inside 75% has 3.5-4mm (yellow), but the 20% or so in between is nearly bald. Is this typical? Shame I am going to have to replace the rears when most of the tread is ok for a while yet. Welcome your thoughts. Cheers [/img]

I am certainly not an expert but that looks very much like wheel alignment is out (camber) - see picture. The fact it has worn more on the near side wheel is most probably as a result Bedford where I'm guessing you were doing more right hand corners than left

I can't really help too much with the technical side but I've done Bedford loads of times and I alway end up with plenty of tyre & brake wear. It's a great place to find the limit (and spin ) and it's generally open pit lane which means loads of track time.

kahos, the photo angle makes it hard to view, do you have a wider shot of the entire tyre rather than a section ? quite possible this wear has been building up over time, probably from a few points of a degree where your rear geo isn't quite right and long distance driving can do this (rather than TD), e.g. euro so I've seen this on tyres assuming I've read the pic correct 8k on rears is still pretty good, what tyres are they ?

Sundeep - another photo from directly behind (not great because the limitations of macro on a compact camera) but you can see the area where the "reversed z" shaped pattern has all but gone. If you count from the inside it is the 6th band, 1st to 4th and 7th (the outside) are ok Tyres are Pirelli PZeros 265/35 I guess it is it best to get new tyres fitted and then get the geometry checked? I have thought about changing to Michelins but there is still some life left in the fronts - not sure whether the rears are classed as illegal with so much tread across the remainder of the tyre. Cheers Karl

I'd suggest a geometry check as well, as they should last longer than 8k miles under normal driving conditions. If they are wearing in the middle, then you might want to check the tyre pressure, as it usually means they are over inflated. Cheers. Edited to say I just re-read your post which included track day driving. 8k is quite normal in your case.