oem gt3 rs wheels. 53 offset without the spacer. 48 offset with.
Tom my bad they were on PSS 235's but theres PLENTY of room from the tire to the fender.

 

Got it. We will see how it goes but et43f (8.5") x et40 (12") is going to be tight. Keep you posted on fitment.

 

yup its gonna be tight but if you can pull it off it will look sweet. if not, either play with the alignment, or go with smaller spacers.
i'll post a pic of my 235 305 toyo r888 on my 9" front and 12" rear wheels with 2mm spacers. remember, toyos run big and wide.

 

holy crap its cold out..
Tom, here is my 19x9 et 51 on a BIG 235 35 19 toyo r888. 25.7" high, 9.5" wide section width with 8.7" wide tread width. thats a AA battery that i can fit through there.

hope that helps.
also, a 12" and et 40 rear with a 325 is going to be REALLY close on a lowered car.

 

Just another data-point for those thinking of switching to 245/325 tires. I run with OZ Superforgiata 19" centerlocks with front offset 47mm and rear 48mm and the right rear inside 325 Pirelli Trofeo tire slightly rubs against the plastic fender-wall. It created a 1" by 1/2" hole. No biggie. I just cut it out to 2"x2". Can not see it unless it's on my lift looking up at of with the wheel off.

That was before the Damptronic install that lowered the car about 3/4".

Just a heads up.

Walt

 

right rear INSIDE? any pics ? thats actually good because that means a really aggressive offset of 40-43 with a big 325 should be flush.

remember, not all 325s re created equal. a super trofeo, michelin CUP (not pss) and Toyo r888 run big and wide.

Edit: walt, i just did a little digging, factory 19x12 wheels come with a 5mm spacer from the factory for our cars... so effectively giving it an offset of 46 (51mm is without the spacer). centerlock wheels come with a 3mm more aggressive offset from the factory. so in theory, yor 19x12 was less aggressive than OEM specced 19x12's (if that makes sense). i guess what porsche does is the opposite of what we do. we want the tire to be as close to the fender as possible without rubbing, porsche designs theirs to be as close to the INNER fender as possible without rubbing (for less drag at speed i assume).

 

Cool so given the 9"F and that Toyos are about .2" wider your front offset is essentially = et 45.65 - (.2"/2 / .039) = et 43. So essentially I'll be running the same offset but with a theorethical increase in section width by 10mm or 5 a side. Should work on the fronts. Thanks for the pic

Interesting do the Trofeo's run wide?

 

Yup, and you have .1 degree more negative camber.

 

pirelli super trofeo 325 30 19
section width 13.2" !! so its wider than the michelin cup and toyo r888 in the same size.
26.9" rolling diameter ! . HUGE
.2" wider and .2" taller than a michelin cup.

 

Okay so I mounted my 7mm spacers yesterday and they fit albeit very agressive and look great.

So my setup is as follows:

Front - 20x8.5 ET 50 with 7mm spacer on 245/30 PS2
Rear - 20x12 ET 47 with 7mm spacer on 325/25 PS2

No rubbing but I ran into a steering wheel vibration issue after mounting them so took th spacers off. have not root caused the vibration. For some reason the wheel guide extentions from porsche could not fit through the lug not holes in the wheels so I may have screwed up on the torque procedure which prevented the wheels from a flush mount.

Anyways they fit!

 

nice Tom. pics

 

Steve Sorry didn't take any as the vibration pissed me off! Will try again next weekend. I'm hoping its as simple as install error. Otherwise there is an imbalance in the spacers from track use(unlikely) Any input?? I removed the spacers remounted car drove fine. Not much of mounting surface once the spacers are installed!

 

Ive got oem 3mm and 5mm spacers. never had an issue. did you try to mount the wheels without the spacers to confirm its not just a bad balance on the wheels themselves ?

 

Yes I removed the spacers remounted and the vibration when away. I ran the spacers on my 19's without issue

 

Can you run spacers with center lock wheels?