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04-07-2008, 07:20 AM | #1 |
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Z4 M Wheels - Performance Aspect
I'm looking to replace my stock wheels and tires as I can no longer stand the Conti's on there, and if I am replacing tires I may as well do everything . I've been debating on which way to approach the situation and I have a few questions that have probably been answered before, but I am failing at the search.
First, I would prefer to go with a non-staggered setup, so I assume I will need spacers in the back, correct? I live in Michigan where it's now pothole season, and I am concerned about 19" wheels surviving very long. On the other hand, I like the look of very few wheels, and the M6 replicas certainly pique my fancy, but an 18" rep. looks to only come in 8" width, which means a fairly narrow tire. Is this advisable? Assuming 8" rims in back are too narrow, would it be crazy to run an 18"x8" wheel up front and a 19"x8.5" in back? Or should I just give up and run 19x8.5 all the way around? |
04-07-2008, 10:02 AM | #3 |
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A standard (non-staggered) setup should handle more neutrally, allowing oversteer on turn-in as the rear wheels can slip easier. It would be better for hard tracking and performance driving.
I don't think 8" wide rims are "small" by any means. Just because some people go super wide doesn't mean thats the optimal setup. I did find some 18x8.5 M6 reps by a major knockoff company (not Miro), but if I were you I'd stick to reps only by known good companies (like Miro and Velocity Motoring, who doesn't offer an m6 style) |
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04-07-2008, 10:10 AM | #4 |
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I agree that an 8" rim is not narrow, but I am also concerned about delivery of power to the ground. Is a 225/235 tire going to offer me enough traction back there, or will I leave trails of rubber at every light?
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04-07-2008, 11:12 AM | #5 |
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235/245 should be plenty good, with a good tire! remember selection makes a big difference too.
With my current 255 pilot sports, I can't even take off the line without spinning out in the rain, but on dry pavement look out! And thats "just" in my "small" 3.0 |
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04-07-2008, 11:21 AM | #7 |
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Oversteer is easy on this car (M coupe/roadster) with a staggered setup. If anything, it is a little tail happy with a staggered stock setup. I am personally going to buy some 275 rear/245 front setup wheels to improve my handling when I buy tires next.
Caveat- I am coming from a high powered AWD setup (race prepped) though so my benchmark about grip is probably in a different place. |
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04-09-2008, 10:25 AM | #8 |
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little oversteering or understeering can be dialed out by playing with the the amount of air in your tires.
theoretically non-staggered setup should introduce more oversteering since the front would have a lot more grip. having too much grip in the front isn't always a good thing. Non-staggered setup would have this "snap oversteering" behavior, which really isn't what you want either. There is a reason 95% of sport cars have staggered setup. I got my new F1 Asymmetrics 235/40-18 front and 265/40-18 rear, haven't mount them yet. would love to go 245/40-18 & 275/35-18 but afraid may rub.
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04-09-2008, 11:00 AM | #9 | |
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I'm running 245 on 8.5" ET35 & 275 on 9.5" ET22 with no rubbing issues.
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04-10-2008, 05:16 PM | #10 |
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04-10-2008, 10:13 PM | #11 |
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why do you want to rotate tires?
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04-11-2008, 07:20 AM | #12 | |
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04-11-2008, 07:11 PM | #13 |
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Like I said- it is tail happy Seriously, it understeers less than my 2 previous all wheel drive cars so I guess I am coming from a different reference point.
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