So sick of TIRES!
Time to do some maths... because... that's fun right? (Clarkson always says maths, so I like that word).
Please forgive the fonts/sizes this stupid thing doesn't have a format painter button...?
Installed the Goodyear
Eagle RS-A2 at 26,000 miles. UTQG of 440.
Checked Friday, with 34,500 miles = 8,500 miles of use. Never rotated... (Why bother, just replace the rears 2x, right?)
All wear is dead even, so it may be down to me enjoying my car...

According to the Service Center "Less spirited driving may result in less tire wear"... To which I replied, I'll be looking to trade in my S85 for a 90D, so I can wear them all out at once next time
New is 10/32"
Fronts: 8/32"
Rear: 3/32"
So, I think we can assume tire wear of: fronts = 2/32" in 8500, while rear = 7/32" in 8500.
Assuming I rotate them, and go another 8500, I'll have fronts at 1/32" and rears at 2/32" and need some new sneakers.
We are going to assume the cost of shipping/installing/disposing/etc of tires is pretty much the same regardless of who makes them...
RS-A2s: $115/tire = tread life of approx 17,000 miles for me. = $460 to go 17,000 miles or $0.027058 / mile
(Tire Rack as of 7/5/16) (Zero tread life warranty). UTQG of 440 =
17,000 miles
17000 miles / 440 rating = 38.636 miles/rating
38.636 miles/rating * 700 =
27,000 miles.
Pirelli
Cinturato P7
$224 / tire
700 UTQG = 27,000 miles. (I hope?)
$896 in tires to go 27,000 miles = $0.03318
SNAP. The Goodyears, are CHEAPER per mile, but factoring in the many, many more mounts/balances... the Pirelli's should prove cheaper (and have better grip!)
There are some
significant assumptions about UTQG here, but I'm growing, very, very tired of new tires every 17,000...
27,000 is a much nicer number, and I do plan to rotate these, as well as the Pirelli's have a 70,000 tread-life (pro rated) warranty....
Anyway, thought I'd share my thought process. Seems the Pirelli's are deff the way to go. the reviews on tire rack (sorted by Tesla only), seem to agree. There's a $60 mail in rebate as well, ends tomorrow. so I guess I'm buying NOW... to save $60 in the long run, right? Leaving them sit in my garage while my car does another 8500 won't hurt...