Square vs staggered
 

Was wondering who was running what.

Please post tire sizes (front and rear if staggered)

Square.

18x9 +35 on 245/35R18
Feels great at the track with the wider rubber.

square, once I tried square I wont do staggered again.

225/45/17

18x9.5 +35 all around. Feels good man.

Do extra wide wheels make the car feel less or more responsive with all that extra rubber on the road and such little power behind it? I can't decide which makes more sense.

Wider tires will make it feel less responsive. I really don't understand why everyone is obsessed with upsizing the wheels and mounting wide tires. Whole purpose of this car is to make it fun, lightweight, tossible. Mounting wide tires & especially staggered setup is going to lose that fun tail happy nature of the car. Car doesn't make that much power. Don't ruin it w the wrong setup.

Understandable why it wouldn't make sense to add rotational mass. However, if you can invest Enkei RPF1's, they actually stay approximately the same weight as stock wheels. rpf1 wheel in the size of 17 (or 18 i forgot) x9.5 weighs in at just under 18 lbs. With 255/35 it would bring the total wheel weight to just under 40lbs. Stock wheel with tire weighs in at 40.3 i believe. But unless you plan on drag racing with mustangs , the increase in width of the tire will give you incredible amount of grip around corners and push the car to further limits. :happy0180:

The people who do stupid wide and negative offset wheels do it for form. Running wheel size such as 17/18 x9/9.5 is functional reasons. Of course if you buy real wheel they will be lightweight for the most part and will stay in the range of the stock wheel weight WITH tire. Imagine sliding one finger on a table top, then imagine sliding all four fingers across the table. More grip with more fingers. Same concept with tires. Given the setup is sensible and functional.

edit: There is also some "form" inspiration that goes into wider wheels ;)

That's not the purpose for me. My purpose is to have as much grip as possible! Enjoy you're feel while I'm going faster!

That said I'm running 255/40/17 square on 17x9 et40.

there isn't anything functional by going up to 18's. Even if the overall weight is the same when running 18's, your rotational inertia is still increased - you want the concentration of weight closer to the center bore. and you gain nothing by losing that little bit of sidewall.

vehicle dynamics are a bit more complicated than using your 1 finger vs 4 finger concept. the chassis engineers specifically dialed in spring rates, damper compression/rebound, sway bar stiffness to get the vehicle to behave in a specific way. the wheel weight/tire width is all part of this along with caster/toe/camber alignment specs.

The OP didn't state his intentions for the car. If he's looking to shave down lap times, then it's a completely different discussion. If he wants to spend money to "upgrade the car", I'd spend it on other things.

The entire essence of this car was to have a fun to drive <30k sports car that lets you hang the rear out. Fucking around with the staggered setup is going to lose this purpose.

Thanks for the explanation. I really was thinkin about doing 18x9 rear 18x8 front just to get that extra beefy look in the rear. However if I lost any feel or reponsiveness ide be pissed. I was gunna keep wheel weight (without tire) under 22lbs though for sure.

Couple of the more hard core track guys (csg_mike was one of them) said they found 225 width tires to be quickest around most tracks.

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My car is an AutoX car. Grip is king. Top speed and rolling resistance don't matter to me at all. What makes you slower is when you up-size the diameter, not width. Plus to my knowledge CSG has not run 255s ever. Actually according to the build I just checked they've not run ANYTHING wider than 225 so how would they even know if wider was faster?

Mike only lists a bunch of 225 tires:

http://www.ft86club.com/forums/showp...0&postcount=27

I really don't see how less grip makes a momentum car faster around any track, but whatever. How much experience do you personally have with different widths???? I know from MY PERSONAL experience my car was faster after the move up from 245 to 255.

finger tuning is best tuning

my car's on 1 finger wheel gap and 6 finger exhaust diamater.

no two finger ever beat me.

i'm da boss.