Assuming I'm riding how low? I'm running stock springs in the back and GF210's in the front.

 

oic do u have any pictures of ur car? what kinda suspention are u on? Yeha i fig that i would need wider front fenders but didnt know about the rears.

 

You don't need wider front fenders, just need to roll the rears a bit. This guy is running 18x9.5 with a +30 offset and 265/35-18's on the street and 285/30-18's for trackdays. All he did was roll the rears and add a 5mm spacer on the front to clear the calipers. (dropped on JIC Coilovers)

 

I have SP1s in 18x9 +31 with 255x35 tires on stock suspension and no rubbing at all . Going to drop it soon with Tanabe Sevens, but for now everything is perfect

 

I am running 36mm offset on 255/35/18 PS2's with no problem at all.

 

should i stick with 245/40/18 on an 8.5 inch rim or could i do a 255/35/18 safely?

 

I'm running 255/35/18s on an +29 offset 18x9 wheel with WORKS Ride Springs for lowering, and there's absolutely no rubbing.

 

Is that the .9" or the 1.2" Works Springs?

 

Depending on what your lowered on and if you can live with a little rubbing while making sharp turns or not. The 255/35 is about the same diameter (depending on tire brand) as the stock Advans. A 245/40 is a bit taller.

My buddy is running 255/35's on his 8.5" wheels on his 06' WRX and they look fine.

 

tsurugi, how much do the works springs you have lower your car? i am debating on falken tires in 245/40/18 or 255/35/18 for advan rs wheels

 

The WORKS Ride Springs supposed only lower the car by 9/10ths of an inch, but it certainly "LOOKS" like it's more aggressive than that. But I have to admit, I think I could easily do a 40 series tire next time around. I think the .9 drop is "just right", especially if you live in a place where the roads are far from perfect.

 

255/35/18 tires fit fine on a 18x8.5" rim. Perfect fit in my case, 255/35/18 Kumho Ecsta Supra 712 on a 18x8.5" Ronal LV rim (on my eclipse).