While Cory was in between Nissan and KSpeed, I gave this company a try. The owner, Jason, came to my house to dismount/discard 4 kuhmos, and mount 4 used hoosiers on my SSR's - @$25. Your price may vary depending on what you request (I didn't need balancing or new valve stems).
Interesting business model: much of his business comes from fleet accounts (think WSD with multiple vehicles in one place that can be serviced at one place, on the same day). Nevertheless, for my work order, he came to my house, extremely convenient. (If I didn't call him, I would have needed 2 trips to an installer to get this done - 4 wheels/tires, plus 4 additional tires don't fit in the car). And if you were going to order from TireRack anyway, he'll travel out there to pick up your order.
Jason is very professional. He's been a NNV resident for quite some time. He has a law enforcement background where he got exposed to fleet management, and I assume this is where he developed his idea for his business. He's also currently running for Assemblyman in District 25.
Cory is still at the top of my mind for my car work - but Pit Stop Mobile Tire Shop was a good find for me, as an alternate for tire mounting. (Though no one else but the Magic Man will be able to handle those Kuhmos
)