What mods are needed?

**qckslvrWS6** · 07-04-2006, 08:16 AM

I am about to put an eibach pro kit on my car with the bilstein shocks and a new set of C6 z06 wheels. I was wondering what mods, if any, i would have to do to fit 19" x 10" wheels in the rear with an offset of +56mm.

**qckslvrWS6** · 07-04-2006, 09:56 AM

I don't know much about fitting the wheels and tires. The combo looking at is as follows:

19x10: Offset: +56mm Backspace: 8 5/8 inch (Rear)

18x9.5: Offset: +40mm Backspace: 6 7/8 inch (Front)

If they will fit, what size tire will i need after adding the pro kit and shocks.

**Eugenio_SS** · 07-04-2006, 06:18 PM

those wheels will fit nicely with those offsets.
as for tire sizes, well... I would go with the following:
275/35-18 (front) OD= 25.58"
285/30-19 (rear) OD= 25.73"

ps: stock OD= 25.66" and note that both sizes are within 0.5% off. (ie error in speedo is < 0.5mph @ 100mph)

not only will the overall diameter (OD) be good (ie doesn't affect the speedo + ABS) but the tires are also great size for properly mounted on the rim sizes.

275/35-18 fits on 9.0-11.0 wheels (best mounted on 9.5)
285/30-19 fits on 9.5-10.5 wheels (best mounted on 10)

btw, which bilstein are you thinking on getting for the prokits ?

**qckslvrWS6** · 07-05-2006, 09:47 AM

Im getting the bilstein BTS shocks to go along with the eibach prokit.... and thanks alot for the help with the fitments.

**Eugenio_SS** · 07-07-2006, 08:17 PM

i'd not go with the BTS... they suck... if anything, Bilstein HD are decent, even if meant for stockish spring rates.
what's your shocks budget ?

**cylpimp** · 07-09-2006, 07:56 PM

I dont have the shocks but do have the Prokit and 19x11 in the rear and only minor massaging was needed to fit. Without it, would only rub with weight in the back or accelerating around a bumpy curve.

eddie