1998 A3 - wheel ET help needed pls (+ green cotton air filter opinion)

[NewboySW]

Hi guys

I'm looking to put 18" 9 spoke TT alloys on my 98 1.8t. The PCD is correct (5x100)
but the 18's have an ET33. I read my model ET is 30 to 45. So am I ok to go for rims with ET anywhere between 30-45? Can anyone shed a bit of light for me pls

On a separate note - has anyone used a green cotton air filter, thoughts? Any real difference? I hear the K&N can gunk up the MAF

Ta v much

[NewboySW]

I've just checked my existing wheels and they are ET42. So ET33 is 9(mm?) difference. :confused:
Any idea if they will fit?

Cheers

[Crasher]

The factory spec for an 8x18 rim is ET33.

I wish whoever was saying that a K&N will damage the Air Mass Meter would shut the **** up, I have been selling them for many years and run them on my own cars and they never upset the AMM. Yes certain a brand of foam air filter I have used (not mentioning the make otherwise they will get, err, cross :D) have given me contamination issues but never with K&N.

[NewboySW]

Cracked it. I've just found an offset/ET calculator which may be useful to anyone else thinking about changing wheels:

http://www.1010tires.com/wheeloffsetcalculator.asp

[NewboySW]

haha, a gentle reminder to NOT listen to hear-say there :D

I've just used the calculator and the TT 18s will be 10mm closer to the strut cover and 'stick out' 28mm more than my standard (1.8t) 16s - I think I'll get away with it.

Cheers Crasher

Newboy