They probably inflated them with nitrogen. Hence the green caps.

 

Yeah, I know, but they're green!!!

78% Nitrogen is good enough for street cars, its a sales gimmick.
The tires had 21% oxygen in them during mounting.
In F1, Pirelli mounts the tire, then purge cycle a few times to achieve 99% Nitrogen purity.

IF Costco really has a Nitrogen generator, then my tires have less than 90% purity.

 

On the good side, I can fit a spare upright in the rear when I fold up my boot panel, using my net to keep it from moving!!
And still use the upper boot cover, thus hiding it.

 

cant agree more. When I went withh an optima for my R56 I pretty much had to say look I want this model battery if I give you the specs on car I guarentee no matches I was in middle of E36 motor swap. Or I wanted to do cooling fans on intercooler went through same BS, if I give a part number and am paying for it does it matter what car is
Aso if you have green stem caps on noting nitrogen filled Costco and Sams will not put air in no atter what . I was at sams noticed tpms on and tire way low at tat point I dont care what gas is in it Just add something please so I grabbed the hose put enough in the took green cap off and said "Ta Da"

 

You have to remember these poor shops deal with the general public, who probably couldn't buy the correct windshield wipers if their life depended on it. Those same people will become irate if something doesn't go correctly, even if it is their own fault.

That being said, I agree with you.

 

I completely understand the whole general public thing but what are people like me supposed to do when I want a part now its not meant for the car I am putting it on but I know what I want isnt that how hot rodding began. My R56 was buit up to 365 whp without using a single "designer" part. Nothing used was made by or for the car specifically but a little creative routing and left over Honda projects lead to a T44 turbo with a FMIC from a Prelude and 2.5" piping. only thining I would have done different would have been use 2" piping but as soon as its newest incarnation is up and ready it will show off a E36 and 2 turbos with rear mounted Water intercooler and RWD. Now try and get a part from any store for that "Year...2007 Mini Model...Cooper S Is that the 1.4 turbo? No its ae 36 ....I cant find that are you sure?.... Well thats from a M3 so is it for which car ... Nevermind Ill just go down street there too stupid to typwe in the right stuff anyway so Ill get it.