Looks like my rear tires are wearing much faster than the front. Wear is even enough. About 20k miles on the set. Fronts have about 8/32 and the rears have about 4.5/32. Is this normal? I drive like I'm transporting nitroglycerin.

Mine did that, rears wore twice as much as fronts, I reset the rear camber from it's minus 1 degree to plus 1 degree, it drove much better, turn in was greatly improved as the rear tyres actually contacted the tarmac, plus the next set of tyres wore evenly....

I tried it first with a very sophisticated method, used the second page of the standard iPhone compass App, it gives degrees from vertical, put a straight edge across the tyre with the phone on it and adjusted the camber bolt to suit, it drove much better so had it checked with a 4 wheel alignment and it was spot on, so an effective and cheap method...  Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Thanks, I have a 3 yr alignment deal so will just have them reset it and rotate tires aka tyres.

Update time: was thinking about the camber adjustment causing excess rear tire wear. Theoretically it should be uneven wear if that was the problem because camber tilts the top of the tire in or out causing a wear bias to one side of the tire. Taking careful depth measurements I found that not to be the case. So I rechecked the fronts at multiple points and found it was really about 5+/32. My mistake in use and reading my depth gauge. This leaves the problem to be that my Falken brand tires don't wear very well.

If you run too much negative camber (and I maintain the standard setup is too much) then the tyres scrub the surface of the road every time the suspension moves up and down, they are travelling through too much of an arc, hence, wears the tyres fast....

I reduced the negative camber and tyre wear was the same as the fronts...  Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Has reasonable logic to it but it seems to me the arc has a constant range determined by the suspension travel and terrain. So theoretically this would just change the center point of wear on the tire producing more wear either inside or outside of tire fore/aft centerline. Looking at your profile GIF I'd say your RR experiences far more suspension travel and arc than my FF.

OK I get the dumbass award maybe. Never noticed my tires, 3 of 4, were mud and snow rated without a tread life rating. This would explain the limited miles. It doesn't explain why the 4th being the same brand all season with a 440 tread wear rating was more worn.