So why do I feel like the odd-man-out.

I am running square with Enkei PF01 9.5 x 18 ET35 with 0.5" spacer on the front and 1" spacer on the rear on 265/35R18 Yoki A048 because I have an opinion that anything more will over-tyre the car ....

I'm never going to run FI, even if (when) I put the car on a diet and give it a dose of steriods, because our class reg's on this side of the Pacific don;t permit it.

Indeed, if I stay in Production class, my maximum wheel size is only 9" x 18" and tyre choice is limited to R-Spec rather than full slicks.

I use "little" tyres so the CoG is lower without having to worry about suspension arm angles, and it helps with gearing - the effective final drive ratio with the 265 tyre is 3.92:1 and I don't have to open the diff housing ....

The old setup was 8.5 front with 245/40R18 and 9.5 rear with 275/35R18 and that was severely grip-limited at the front ... with 265 all round, is is "nicely balanced" and I don;t see the need to go 275 or 285 (although 285/30R18 will drop the car another 8mm and in theory improve mechanical grip and drop final drive to 4.02:1).

Is my name actually Fuller Schitt or does my logic have some basis in fact ???

Doran racing seems to do well with 245/275, look into his setup. I'm sure any setup can be made to handle with proper arms, camber, toe, caster, sways, springs, valving, etc etc.

They'd kill for more front tire.

They're limited because those are the sizes Grand Am would allow.

Correct. He talked a lot about rules too so if doran can get by with rules, so could he.

Got em.

My friend did extensive testing on the rivals, the only time the rival is faster is on lighter cars that don't overheat the tires (miatas etc). He tests on an s2k, and was slower than the Rs3. So I am staying far away from the rivals and they are MORE expensive than the rs3.

What do you guys think about 285 ds3's all around on the stock sport wheels? I know 18s are better but love my rims.

on stock wheels I would run 275 Square

Thanks that's what I figured but I wanted to be greedy I'm tired of the back end coming out. Maybe I can do 275/295.

This will be my first square setup. I'm going to see what the hype is. Course need my car running to find out.

Good to know

Interested to hear later.

If I could sell my front HTR z111 255/40's I'd like to do square 285/35 and see if I can feel a difference in a DD setup.

since your going to run staggered wheel widths, the front contact patch will still be narrower.

295 hoosiers fit on the stock wheels, all the way around

Personally, I am very far away from needing FI as a driver at the road courses I do. Even with turbo/super a square setup is still a good option though so I don't know what you mean unless you are talking drag racing.

Now, if you are talking drag racing/zooming onto entrance ramps, then yeah a square setup makes no sense. On street I run staggered, waste of money to run 285 square on street driving.
__________________

Bow chicca bow-bow