I'm looking to get some SBC RPF1's to replace my current wheels and cannot decide what to get as far as size/width. I currently have SSR Professor SP1's in 19x9 +33F and 19x10.5 +31R with 10mm spacers all around on my '03 Track model. I'm torn between these choices...

18x10.5 +15 F/R with 275/35F & 275/40R tires
18x9.5 +15F / 18x10.5 +15R with 275/35F & 295/35R tires
19x10 +22 F/R with 275/30F & 275/35R tires

I'm after something that will serve me well on road courses. Other mods include SPL F/R camber arms, SPL rear midlinks, SPL coilovers, SPL swaybar endlinks, Hotchkis sways, Stoptech 2pc slotted aerorotors F/R, Goodridge lines, and Carbotech pads (AX6 for street & XP10 for track). Let me know your thoughts, thanks!

 

Im in the same situation but Im leaning towards the 18x9.5 all around

 

Seriously leaning towards the 19x10 +22's after watching this =]

http://www.youtube.com/watch?v=fa0P0TQm_SY

 

I really wish they made that size/offset in 18's...I don't want 19s...

 

I just bought a set of RPF1 in 18x9½ +15. I currently have 265/35 tires on them but once that wears out, I'll do 275s. Only one track day on them but that setup handled very well.

If you're only going to use them on a track, I wouldn't worry about a staggered setup. A square setup will allow you to rotate them regularly as well as balance out the handling.

 

Dedicated track wheels? Get 17's and don't get an offset that will limit your tire size in case you want wider rubber later.

 

19x10 +22 F/R with 275/30F & 275/35R tires

 

Unless you have brakes that require it....don't get 19" wheels. Go as small in diameter as you can....it'll cost less both in the wheel itself and the tire that you'll put on there (and then promptly begin to destroy). Track wheels are generally about getting a job done rather than making a fashion statement.

 

i can't imagine being able to run a 275 on a 9.5 +15 without some serious rubbing issues.

also why would you want a 10" wheel if you are only going to put a 275 on it--seems like a lot of uneeded weight.

 

Some tires, like the Hoosier A/R series, require a 10" wheel for their 275mm footprint.

 

We race our 350Z in SCCA T2 and use 9x18 fronts and 10x18 rears and have been using 285/30x18" Kumho tires. We use Enkei RPF1 with a 22mm space in front and I think 8mm spacer in the rear. We also have Brembo brakes all around and no rubs.