Backspacing on 17x9

[Guest KraZ4spd]

I'm looking for the amount of backspacing for a 17x9 wheel on the rear of a 240. I have the stock drum brakes and I'm running the ground control coil overs. I haven't welded my pirches in place yet so if you have info on this let me know. I found these wheels

for $420 each. I know, a little pricey but aren't they cool? I love that Porsche look. Any info would be GREAT!!!

[z ya]

5.5 bs or so is about max with the coilovers. Your

tire would just barley stick out the well.

[Guest LIghtningZ]

Those Kinda look like Pete P's wheels they should make your Z look preety tough!!

[pparaska]

Hey, I like those wheels - I wonder why!?

 

Check out my page on wheels and tires. The drum will have an effect on the backspacing. My 17x9s are 149 mm backspacing. That works well with stock fenders (rolled fender lip), 8" coilovers (mounted high, with shortened coilover sleeves), and 1/2" thick rotor hats. You'll have to take the difference in the drum face thickness of your drum and the 1/2" thick rotor hat I have to come up with the right backspacing. In this range you might end up with thin slip on wheel spacers.

 

I'd think the difference between the drum and my 1/2" thick rotor hat is about 7-9 mm. Add that to the backspacing of my wheels to get in the ballpark, and you'd have about 156-158 mm backspacing needed. If you could get 150mm backspacing, you could use a 1/4" spacer and be close, I'd imagine.

 

Definitely try to mock up things before you buy, but the above should be in the ball park - no gaurantees!

 

Don't weld the perches in place until AFTER you have your wheels and tires. The clearance up there is MINIMAL and you will want to fine tune the placement of the coilover tube.