My new to me 2013 RR Vogue TDV6 has the same thing on the outside edges of both front tyres and nothing on the rears. It has done 42000km but I don't know whether it is on its second set of Goodyear Eagles or first, since I only bought it on Monday last week. I noticed the chipping on the tyres before I bought it and will get a new set of 275's soon. It was serviced by the Southern Perth dealer on Thursday and I thought they might have commented on the tyres being excessively worn but they made the comment that the tyres were all good, probably because they were just within legal limits.
Another guy on the Discovery Sport area of the forum had the same thing on his DS Goodyear tyres and was complaining that the tyres were not fit for purpose. My DS is so far OK at 22,000km, but there is some very slight chipping on the fronts if you look closely. Otherwise, they are hardly worn. The DS runs as a front wheel drive most of the time and is harder on the fronts than the rears, whereas the D4 and (and I would have thought RRV) are usually harder on rear tyres in my experience. My rears on the D4 are always chipping when towing off road but not the fronts.
Since my tyres are chipping on the outside and yours are chipping on the inside I assume there must be a slight error in the toe in adjustment on our cars, causing a bit of scrubbing of the front tyres. The Eagles don't seem to take kindly to scrubbing, even on normal bitumen roads.
Edit, I just had a look at my front tyres on full lock and there is chipping on the inside as well as the outside edges, so it can't be a wheel alignment problem.
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