Quick Question
 

What does the "s" in 3.0si stand for?

SLAMMING!:doh: :NOADD:

Ha, just joking. I really don't know. Interesting question though. I would assume on the 4.8 that it stands for Sport.

Its just odd that its in the 3.0 but not 4.8. I tried looking at the brochure but didnt really see anything. Oh well.

It is 4.8si

Hmmm. The brochure from the front page here and BmwUsa.com only list the 3.0si and 4.8i. :confused:

The s stands for sport, but what it means in the context of the 3.0 is that the E70 has a higher output 3.0 engine that the last E53 3.0, as it is a newer generation Valvetronic engine. There isn't an E70 3.0i, which means that the s is somewhat redundant.

The same s designation is used on the X3 3.0i and X3 3.0si (although the si isn't available in the US), to designate a higher output version of the same displacement engine.

With the E53, the 4.8 was an s, whereas with the E70 the 4.8 is not an s.

It's about time the auto makes drop the "i" designation now. It means "fuel injected", doesn't it? Are there any new cars still being made with carburetors these days?

Nah. It'd be really awkward seeing a BMW trunklid with only "335".

Woah thanks for that explination! So in other words, the "s" for the new E70 3.0 stands for "special." Of course in German I am sure there is some other long word to use.

How about 335TT for Twin Turbo?

you are thinking 2006.
That's ok.

Not positive what the "s" stands for, but I always thought the "i" stood for "inline". Am I right?

Nope, because my 4.4i is a V8

Isnt the letter T already designated as the "touring" version (sport wagon) in the 3 and 5?

As it is a German car, you would need an "e" I believe, to be correct. BMW can't do that cause they wasted the "e" designation on the eta engines.

An "i" would work for Italian/Spanish/French/English though. I am sure that i means injection on some current BMW models, but not necessarily.

I recall that the 1800/2000/2002 ti models had Solex carbs. I just looked it up, and apparently ti meant Touring International (and it wasn't a wagon).

I think that the conclusion is that BMW wants some letters after the numbers to differentiate the model. Otherwise people might accidentally confuse a 330 coupe with a 330 Caterpillar (30 tonne) excavator.

because the Z4 has both 3.0 and 3.0si, and uses the displacement nomenclature (like the Xs)...there must be difference to separate the lower output and the higher output engines

therefore to keep things consistent, (Xs use higher output), the X3 and X5 uses 3.0si now

:nanana:

guessing the s does mean sport[ier]

!ouch: duh! stupid me...

personally, I don't believe even BMW knows - probably just some advertising company's idea

I know it stands for "Ixpensive to fix":bustingup

no wonder every BMW has the i
:band:

Z8 didn't
;)

i just bought th 3.0si and i ask what is s and they said "it is upgraded engine from the previous x5 3.0 and they boost up the hp and makes the transmission smoother" =)

Oh so "s" stands for smoother now. :rofl:

Nah, I think it means 'spensive :rofl:

lol :iagree: haha :popcorn: