TheNutDriver

iTrader: (1)

Im looking into some CCW Classics for my O1 WS6, currently running on TT2 17x9.5 front and 17x12.0 rear with 315 tyres - they fit but room is tight and i want to lower with some 1.25 inch lowering springs.

i don't know the offset of the rear wheels, but they stick out of the arch by around 8mm.

Ive checked the sticky up top and ET40 is listed as being ok to fit front and rear- how much does an ET40 stick out of the arch over a stock ws6 wheel?

TIA

TheNutDriver

iTrader: (1)

Also, the shop I may buy them from is asking me what sized spigot rings I need? anybody know?

HCI2000SS

iTrader: (2)

Where did you find TT2's in 17x12?

TheNutDriver

iTrader: (1)

I didn't, they were on the car when I bought it. From your comment I guess they may not actually be 12.0 then - I've not properly measured I've only slipped a rule against the wheel and got a rough idea but it's gonna be close to 12.0 so could be 11.5?

TheNutDriver

iTrader: (1)

They are 11.0. Properly measured last night.


Im now reading that an ET40 on a 9.5 inch wheel isn't going to work?

bigbomber5

You need to ask the member on here, Dopefedz. He has like 15 sets of CCW lol. He could probably point you in the right direction to find some.

DopeFedZ

iTrader: (34)

This is a good offset calculator to use

http://www.1010tires.com/Tools/Wheel-Offset-Calculator#

quick search showed a stock ws6 wheel being 17x9 with a 50mm offset. if you plug in those numbers and the numbers for the new wheel you are asking about it says you will gain 4mm from the inside of the wheel to the strut housing and the outer edge of the wheel is going to being 16mm further out than the WS6 wheel sits.

dojob

I have 285/35 on 18x10.5 +38 with no rubbing issues on my camaro which has narrower qtr panels than firebirds.

this tool is great to give a visual of your needs
https://www.rimsntires.com/specspro.jsp

TheNutDriver

iTrader: (1)

Hi Dojob,


Any pics of your car larger than your profile photo?


Would be grateful if you could post a few. Also - I take it that your 285/35's are all the way around? not just the rears?


Cheers


James

dojob

Yes, they're all the way around.

https://ls1tech.com/forums/chevrolet...tic-white.html

TheNutDriver

iTrader: (1)

Thank you, the Z28 Looks great!