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05-03-2008, 09:38 PM | #23 | |
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The Wintersport tires I have on my S2000 wear twice as long as the summer tires so they are good for ~4 seasons. It saves wear on the summer tires which cost more and last less. I would say the saving of wear on expensive summer tires would pay for the extra rims. |
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05-03-2008, 11:16 PM | #24 | |
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07-05-2008, 03:14 PM | #25 |
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BTW I just weighed my 19's and got the exact same weights as Greg!
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07-05-2008, 04:46 PM | #26 |
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So the 19s are lighter, but wouldn't the 18s perform better, because of the larger sidewall and the tire being more rubbery than the 19s? It seems the theory is such anyway
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07-07-2008, 03:30 PM | #27 | |
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depends on factors. sometimes the stiffer sidewall is better. on a bumpy surface the taller tire my stick better but then with the EDC equipped M3 that may be irrelevant. in raw acceleration the lighter wheel would win. in handling, less wieght is always an advantage too. with wheel/tires that are both unsprung and rotating mass the weight advantage of a few pounds is multiplied.
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07-19-2008, 05:48 PM | #28 |
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IMO the 19's look way better, not just the size but the actual design of the wheel and how they suit the car. If the 19's don't weigh anymore then the 18's then I like them even better to me. IIRC, with the E46 M3 the OEM forged 19's did weigh more then the cast 18's. I had an E46 M3 with the OEM 18's and also an E46 M3 with the ZCP 19's and I did notice the ZCP's felt just as agile and light, if not more so then the OEM 18's. Wheel weight does matter and it is noticeable. If I were to order an E92 M3 today, without a doubt I'd go for the 19's, better looks and the same weight!
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07-21-2008, 02:09 PM | #29 |
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I agree of course its all personal taste. but the e92 is a bigger car than the e46 and 18's tend to look a bit small.
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07-24-2008, 07:15 PM | #30 |
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Yeah right, that's what I'm saying the 19's look better on the E92 and also on the E46 M3, IMO for that matter.
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03-15-2009, 07:15 AM | #32 | ||
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03-15-2009, 02:38 PM | #33 |
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An interesting part of this is the numerous results we've heard about the 18s ever so slightly outperforming the 19s. Seems if we believe such tests it is the moment of intertia effect, not the weight.
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03-15-2009, 05:15 PM | #35 | |
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This is why smaller wheels are better in racing/track/etc. Only go as big as you need to clear the brakes, etc. Or go big for looks. |
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03-16-2009, 01:33 AM | #36 |
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you mean if you want to refuce your wallet!!!!!!!!
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03-16-2009, 01:34 AM | #37 | |
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03-16-2009, 06:25 AM | #38 | |
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'09 E92 M3 6MT | Alpine White | Black Leather | EDC | CL Trim | 19s
'03 E46 330i 6MT | Electric Red | Black Leather | ZSP | Bi-Xenons |
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03-16-2009, 11:06 AM | #39 |
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This may be true if the weight difference were large enough, as I said. But it hardly is. The 18" PS2s are 24/27lbs F/R and the 19" PS2s are 24/25lbs F/R. So total savings are 4lbs on the rears. Hardly enough weight to overcome the larger radius of the 19" wheels on all four corners which have most of their mass towards the outside - this is the bigger factor. When things are just about equal - like they are here - the 18" (or smaller radius wheel) will always have a lower moment of inertia. Hence they will perform better. How much better? For the average driver they won't even notice. To me, the 18"s make the most sense on this car. Smaller wheels are most always better when you need performance - car performance that is
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03-16-2009, 02:28 PM | #40 |
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I agree, but only if you are an absolute purist. The overall performance difference will likely be smaller than car to car and certainly smaller than driver to driver variation. To me 19s are a good compromise. The car looks kind of large and 19s fill out the wells better with only a very small performance hit. 20s in the other hand...
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03-16-2009, 03:18 PM | #41 |
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i think the point is that BMW did the RIGHT thing by making the optional (more money) 19 forged wheel combo actually save weight.
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03-16-2009, 05:17 PM | #42 | |
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03-16-2009, 10:44 PM | #43 |
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so does a Lexus? your pont?
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03-16-2009, 10:58 PM | #44 |
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