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Originally Posted by Auricom

Majority of USA X7 owners aren't going to be skid padding or push the limits of their engines on a daily basis. That said, it's great to know that a XL SAV can deliver those numbers and performance.

For most X7s owners A/S tires offers year round versatility for daily driving and enough performance for a Whole Foods run.

and most don't need 50i and M50i......

but if you are going M50i, go all the way and get the summer tires....

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Originally Posted by fkim119

I would assume this is the case unless the 21"s are cast and the 22's are forged.

With that being said, the 23's on the Alpina are over 28lbs lighter compared to the 21's. Go figure! That is over 7lbs a corner saved...

not surprising....but those wheels are probably like $2000 plus if you mess one up...