Northwest GT

I still like the look of the Cobra-R wheels, and they are 18X9's. Just don't know about the backspacing.

csr

If you can give me all the numbers - I will work it out for you

As well as 18x9 you should find "et" stamped on the wheel too - this is the all important off- set
Which dictates the back space - might be 35 or 45 - something like that

There is another issue that might not be relevant in this case - more about newer wheels on older cars
the centre bore of the wheels on SN95 is 70.5mm - not sure without checking exactly when it changed but newer cars have a smaller centre bore

Have a formula which you can put in a spread sheet that works all this out but not sure how I could put it on here
Have one that works out tire radius too so you can work out the profile required to go wider at the same height

If this stuff is on here already - please let me know - if not - I'll see if I can do something - might need help

m05fastbackGT

Don't know if your aware of this or not, but Northwest GT was last active on TMS over 9 years ago on 7/17/13... Therefore, if your expecting a response from him/her anytime soon? I wouldn't bet on it... Anyhow, for what it's worth, just thought I'd provide a heads up nevertheless

csr

You're quite right - you guys write the date differently to us so I miss read it
Thought the 22 was the year - clearly not now I look a bit more carefully

Have to wonder why no one answered the question - wheel & tyre size stuff is not exactly rocket science?

Did find a tyre size calculator on here for anyone else reading this

any way - thanks for letting me know - I promise I will do better