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Discussion Starter · #1 ·
Im looking into buying a set of used ce28s 18x9.5 +12 , 18x10.5 +18 and i would love to make these wheels my autoX/road course wheels. Would the offsets be in my favor? any info will be helpfull. thanks
-danny
 

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Discussion Starter · #2 ·
anyone?
 

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The offset difference isn't really significant enough to make a major difference in handling. The thing that won't be in your favor is the wrong-sized wheels (not identical to stock diameter and width, and within 6mm offset) will put you into BSP (B Street Prepared) with a much harder PAX/RTP and much more expensive, fast and difficult to beat cars.

Something else to consider is that those big, wide wheels will significantly increase your rotating, unsprung mass (and even if they don't significantly increase weight, the greater proportion of mass at the rim will increase the inertia of the wheel), making direction changes, acceleration and braking less responsive.

If you want a great set of wheels that (imo) look good and weigh very little, and are also legal for stock class SCCA autocross, check out the Enkei RPF1s. 15-16lb, available in all the right widths, and with offsets close enough that you can get them legal with the allowed spacer. These would also be good wheels for road course use.

That said, don't let autocross classes (or internet forums) define your mods unless winning is your goal. Just do what you like and can afford and have fun at the events.
 

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Personally, I'd get 17" wheels, and get them in wide enough widths to fill the wheel wells. Wider wheels and tires = a more stable Z.

I have the 18" RAYS, and as soon as I find an affordable, and lightweight set of 17's that will fit over my Brembos, I'm snagging them. Buying 17"s worth of rubber will save you a lot of money as well.
 

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Discussion Starter · #5 ·
Thanks for the input guys, ive got a big decission to make.
 

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Does anyone have any experience putting 18x11 wheels on a track model Z?
Auto-x at the national level means more rubber on the ground. I would appreciate any advice on wheel brand (looking at xxr 531 with +20mm).
 
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