I agree with Vin,and once again I disagree with you,as usual!

You say"........If a mod made the car better they(BMW)would fit it to the stock car".

My Answer:Most of us here are not really making any mods!We are just doing what Bmw do the X5,the stock car!
Bmw fit bigger tyres/wheels,RBs,bodykits,NAV and TV,DVD & AUDIO!So,as you say,if Bmw install it they make the car better,correct!These are your own words,true!

I could have ordered my X5 with full options but couldnt afford it then!So,I have installed what I couldnt then!And so say, a lot of x5 owners!
To give you a small example.If BMW fit a 20" wheel on their "stock" 4.8.I am sure that its better than the standard 17" wheels on a 3.0????But I am sure you disagree not only with the majority of us but also with BMW .............