ok, so here is the deal. i have a set of work emotions in 18x7.5 +42 and 18x8.5 +40. I also have the J's front fenders and asm rear overs with the fender well cutout. i am running 25mm spacers in the front, and 20mm spacers in the rears. with all of these variables, i am having trouble figuring out what size tires to buy. i want something a little beefy.

for reference, here is what the wheels look like with the front fenders. those tires are 215/40. the rear fenders are obviously not cut in the pic yet and are stock. the rears are also not running a spacer here either. rear tire is 225/40.



thanks!

 

also, is it possible to squeeze a 255 onto an 8.5" wide wheel?

 

Yes, a lot of people run 255 rear on stock AP2 wheels. I'd go with 225/40, 255/35.

 

i ran 255s and 25mm spacers on the polished v1s I had chris. they are 8.5j and it looked nice. I would run a 235/40 up front with 20mms and 255s on the rear with the 25mm. your front wheels with 20mm spacers are essentially equal to how an 8.5j +34 sits from the hub; my current 8.5j +40 225/40 setup up front sits flush with stock fenders, so that's only about a 6mm difference but the Js fenders are +30mm over stock right? A 235 will bulge a bit on an 7.5j but will fill the rest of the 24mm difference better. and obviously you can just dial a little more or less camber as needed to fine tune the fitment

 

so i found a set of slightly used Bridgestone Potenza RE050A Run Flats on craigslist yesterday. typically i would only buy new tires, but these are going to be my spare wheels in about a month or so, so i decided to save a little and pick these up. plus i got them for an amazing price. they are 255 and 245. so there is going to be quite a bit of tire on them. hope everything fits...
Here is a link to them.

 

I would not run the run flat tires without a monitor in the wheels. You will never know when you have a flat until they blow out.