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10-01-2014, 08:14 AM | #1 |
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Direzza ZII Star Spec with Stock Wheels
I have heard great things regarding the Direzza ZII Star Spec. I would like to purchase them for my M Coupe, but the rears do not come in the OE Size.
Has anyone installed a set on the stock wheels? If so, what size did you purchase. Car is a weekend warrior with the occasional track day. I don't know much about tire sizing, so I appreciate the help. OE Rear Size: 255/40-18 Here are the sizes listed on TireRack: 225/40R18 88W 225/45R18 91W 235/40R18 91W 245/40R18 93W 255/35R18 90W 265/35R18 93W 275/35R18 95W 285/30R18 93W |
10-13-2014, 08:54 PM | #4 |
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I'm running 245/40R18 and 275/35R18 with the ZII Star Spec's on the Stock wheels with no rubbing. I also picked this size based on a number of other people running the same size for track use.
Edit - I'm also using Turners camber shim kit for -2.7º in the front with no rubbing. |
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10-13-2014, 10:55 PM | #5 |
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Both sizes will work with this particular tire on the stock wheels. The 245/275 is a much larger tire though, and, at the absolute end of the size range. In my experience, and using a pyrometer, the 235/245 may actually supply a better contact patch with the stock wheel sizes. The 235/265 size is a smaller diameter tire than stock, still within the 3% ABS/DSC effective range, but it gives a bit more torque to the rear wheels (and a stiffer sidewall than the larger tire).
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