Right on the Lexus web site it says,

"Tires fitted with 17- or 18-in wheels are expected to experience
greater tire wear than conventional tires. Tire life may be
substantially less than 20,000 miles (17-in) or 15,000 miles (18-in),
depending on driving conditions."

Are you kidding? Does that mean if you get the Sport Package, which
comes with 18" wheels, and you drive the car like it is meant to be
driven, you are going to get about 10,000 miles per set of tires?

Just taking a look at the tirerack website, it looks like it is $925
just for the 4 Dunlop SP Sport Maxx tires, then you have to have them
mounted, balanced, etc.

Oh, and don't you need a full 4-wheel alignment every time you replace
the tires since they are different sizes front and rear, and I think
you can't even rotate them side to side?

Are you going to have to spend WELL OVER $1,000 every 10,000 miles for
new tires for this car, as if it isn't expensive enough to start
with?!?!

Oh, and since these are SUMMER performance tires, at about 10,000 miles
are you going to be slippin' and slidin' whenever there is the least
bit of rain?? Do you need to change them at even lower miles?!

I drove the IS 350, I love it, but I do real estate and put over 30,000
miles on my current car last year. If I buy this, do I have to budget
another $3,000-4,000 just for tires every year????