16" Turinis to 15" OZ F1 offset difference...

[sambo82]

I have the 16" Turinis that I believe are standard 172 cup fare. I also have a set of OZ F1 which I believe are Renault items also with R888 for track use. I've seen that they are different offsets so I am wondering what size spacers I will need to correct the offset difference.
​Is it worth even fitting spacers, will it add or detract from the handling?
Cheers
Sam

 

[sambo82]

Anybody?

 

[Feates172]

Well, what's the offset of the f1's? Cup turini's are et 38.5

 

[sambo82]

Afaik they are et43, I think.
im assuming that the numerical value is equal to millimetres, so am I right in saying there is a 4.5mm difference?
​are spacers much cop or more just for show?

 

[mitch1503]

i fitted F1's on my cup and went for 16mm spacers on the rear

 

[Knuckles]

Iirc, the lower the et, the wider the offset/stance

 

[mitch1503]

Iirc, the lower the et, the wider the offset/stance

​correct

 

[Kelv]

Are the 16" wheels of the same 7" width that the OZ F1's are?
if not, then you need to factor in the difference of the wheel width to the offset to really calculate how much further the week will sit in/out.