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My wheel setup and what tires size

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

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Old 10-11-2013, 01:50 AM   #16 (permalink)
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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 ???
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Old 10-11-2013, 10:11 AM   #17 (permalink)
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Originally Posted by BGTV8 View Post
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.
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Old 10-11-2013, 10:12 AM   #18 (permalink)
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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.
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Old 10-11-2013, 10:15 AM   #19 (permalink)
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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.
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Old 10-11-2013, 11:07 AM   #20 (permalink)
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Old 10-11-2013, 02:10 PM   #21 (permalink)
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Everyone going square, hmmm...

I wanted to run the bfgoodrich Gforce rival since tire rack has it beating the re11 in every dry test. Seems I have to be 275/35 or 295/35 to be square or maybe stay staggered with those numbers. They seem light too. The re11 only has a comparable size in the 275/35 but its 2 pounds heavier .
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.
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Old 10-11-2013, 04:49 PM   #22 (permalink)
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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.
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Old 10-11-2013, 04:52 PM   #23 (permalink)
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on stock wheels I would run 275 Square
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Old 10-11-2013, 05:15 PM   #24 (permalink)
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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.
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Old 10-11-2013, 05:22 PM   #25 (permalink)
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This will be my first square setup. I'm going to see what the hype is. Course need my car running to find out.
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Old 10-12-2013, 02:27 AM   #26 (permalink)
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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.
Good to know

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This will be my first square setup. I'm going to see what the hype is. Course need my car running to find out.
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.
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Old 10-12-2013, 03:17 AM   #27 (permalink)
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This will be my first square setup. I'm going to see what the hype is. Course need my car running to find out.
since your going to run staggered wheel widths, the front contact patch will still be narrower.
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Old 10-12-2013, 07:43 PM   #28 (permalink)
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295 hoosiers fit on the stock wheels, all the way around
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Old 10-13-2013, 08:25 PM   #29 (permalink)
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I can tell your turbos are not installed yet since you want to go square on the tires!
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.
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Old 10-13-2013, 08:29 PM   #30 (permalink)
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Got em.
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