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KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK! |
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11-25-2011, 02:49 AM | #46 |
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BMW _does_ offer an M3 winter tire/alloy combination, at least in Europe. I just ordered and got a set installed, it's ordered as a complete set and comes mounted with Michelin Pilot Alpin PA3's.
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10-27-2012, 09:09 AM | #47 | ||
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I remember driving 316i on 13 inch wheels. It was great car then, no doubt, especially comparing to my everyday vehicle, Fiat 125P (also on 13 inch rims). But anyone who says that M3 will handle better and go faster on 18 instead of 19, in my opinion, doesn't know what is talking about. Comfort? Ride? Yes! 13 inch wheels and bias tires will give you even more comfort. But nobody goes anywhere fast on comfortable tires, and nobody buys M3 to have comfortable ride. For those folks BMW makes 335i and other, lesser models. If for someone M3 ride on 19 inch rims is to harsh, may I suggest Citroen DSS21? Or your father's Oldsmobile? |
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10-27-2012, 11:07 AM | #48 | |
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10-27-2012, 11:39 AM | #49 | |
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I bet F30 M3 will not even have 18-inch wheels. Standard wheels will have 19 inch rims, with 20 inch optional. Can you tell me why? |
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10-27-2012, 02:01 PM | #50 |
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There is tons written on this all over the web. Just do a good search. 19's and 20's are offered because that is what sells, not what is best in terms of ride and performance. Go drive an M3 with the set-up I mentioned in my original post and judge for yourself. I did. Big difference.
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10-27-2012, 03:10 PM | #51 | ||
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Of course you can buy "regular" Corvette with 18 inch rims, but no ZR1. ZR1 is "good looking" model, for performance go with C6 Coupe on 18 inch wheels. Quote:
Either you didn't drive back to back M3 with 18 and 19 inch wheels, or you didn't pay any attention. There is a good reason why you cannot buy any Ferrari or Lamborghini on 18 inch wheels and it is not looks. And I'm not saying, that 18 inch wheels cannot perform extremely well, but when you compare tires 265/40-18 to 265/35-19 there is no way car will handle better on tires with smaller rim, taller sides. Difference may be small, but always that difference will be for 19 inch tire advantage. ...Unless, of course, ride quality is your goal. In that case I suggest you to buy a Buick. |
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10-28-2012, 06:04 AM | #52 | |
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You also can't really compare between different cars. A given car with its OEM spec tire on a 20" wheel may, in fact, have the same sidewall height as different car on an 18" wheel. A 295/30 for example has the same sidewall height whether it is on an 18", 19" or 20" wheel. This is not what we are referring to here. We are referring here to increasing the wheel size, and simultaneously decreasing the tire aspect ratio on a given car to maintain OEM rolling diameter. On other larger cars, you just need a larger wheel to aesthetically balance the look, however, this, again, is not related to performance. They also don't necessarily decrease the tire's aspect ratio. They just use a larger tire with the same aspect ratio on the larger wheel. When a tire sidewall is too large, responsiveness will be diminished, but going to a shorter sidewall only goes so far. So while 16" or 17" is clearly leaves you with too much sidewall on an M3 (if they would even clear the brakes), 18" does not. Look at most track set-ups on the M3. They all run 18's. If 19's are so superior in terms of performance, why do most serious track set ups use 18? By your argument, 20" is even better than 19". How many 20" track set ups do you see? Why don't you see professional race cars using the largest wheels possible?
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--Former BMW M3 owner Last edited by LarThaL; 10-28-2012 at 12:23 PM.. |
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10-28-2012, 02:45 PM | #53 | ||
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10-28-2012, 03:12 PM | #54 | |
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You are still not completely getting my point, but I'm done with this.
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10-28-2012, 04:51 PM | #55 |
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10-28-2012, 05:40 PM | #56 |
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+1, you are absolutely correct. larger is not faster or sharper. simultaneously decreasing the sidewall and increasing rim diameter beyond 18" on an m3 reduces compliance and mostly increases unsprung weight due to metal normally weighing more than air/nitrogen
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10-28-2012, 07:58 PM | #57 | |
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http://www.caranddriver.com/features...d-tires-tested
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10-28-2012, 09:25 PM | #58 | |
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First VW Golf is available, as a factory option, with either 15, 16 or 17 inch rims. Test in Car and Driver shows, that handling in those size wheels is increasing with coming to bigger wheels, and even in sizes 18 and 19 road handling is better, then with tires size 15, or 16. Acceleration suffers, but we talking VW Golf with 2,5l engine. It will not be a problem with 420 HP M3 Second, those tested tires are bigger, when rims are getting bigger. In M3 diameter of the tire on drive axle is exactly the same on 18 and 19 inch rim. Tire Rack shows, that both original equipment tires have 790 revs per mile. So it doesn't look like car will suffer from slower acceleration, it will have exactly the same ratios and speeds on every gear, and, according to Car & Driver test it probably would have better grip in corners. When someone goes over factory size rims, let say to 20" on M3, car may suffer poorer fuel mileage and, possibly, slightly slower acceleration, if diameter of the wheel would increase. However test in C&D suggest, that going within factory size wheels, bigger is better. Better roadholding and better braking. For slightly slower acceleration - more power in M3 offers the answers. In my case it is 600 supercharged horses. |
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10-30-2012, 02:43 PM | #59 | ||
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You want to compare a C6 Vette with a ZR1. Why does the ZR1 have bigger tires? The front ZR1 rotors are a good ~70mm bigger than the base ones, you realize that right? So back to your point why you can't buy Ferrari's and Lamborghini's with 18s: Quote:
" Increasing wheel diameter and width, in turn, requires wider tires with shorter and stiffer sidewalls, which we found will increase skidpad grip, but as our test shows, there is a limit to this assertion" Not to mention they were different compounds too. If the width is the same, why would a larger diameter wheel be better as you claim? Having said all this, I have 19s on my car (OEM). They do LOOK better without sacrificing enough performance for me to go to 18s, unless I'm at the track. This is just personal taste, but I don't think 18s on stock suspension look good on M3's. Now if it was lowered, it'd be a different story.
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10-30-2012, 05:08 PM | #60 | ||
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Of course I realize we are comparing very similar tires and difference in performance between 265/40 - 18 and 165/35 - 19 will be miniscules. However I refuse to accept that 18-inch wheel will be better in any performance category except, to some point, straight line accelerations. After reading the C&D test I can agree that smaller wheel with taller tire could have here slight advantage, but I cannot agree with those statements I read in this tread: "19's are an OPTION for looks not performance" and "The only reason to get 19's are for looks." LarThaL himself states:: Quote:
I have 19 inch rims, because I bought used car with that options. I drove several M3's with 18 and 19 inch wheels, on streets, with moderate speed. No track experience with 18 inch wheels, however even on streets I can feel how much sharper car is with 19 inch wheels and 35 series tires. Sure, ride is slightly harsher, but if I want to feel like riding on clouds, I can borrow my wife's Audi A4 or my daughters old Taurus. If we look at the road tests published in car magazines we won't get any answers either - difference is too small and varies from one test to other. So in real world it is coming down to personal preferences, where looks are not the least important. I can give you that much: 19 inch will not help a lot, but certainly they will not compromise performance either. |
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01-29-2020, 09:21 AM | #61 | ||
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So for "35" tire profile the width of tire has to be bigger to have same height of tire wall. stock M3 R18 245/40 -> tire wall height is 98 mm 265/40 -> tire wall height is 106 mm stock M3 R19 245/35 -> tire wall height is 85.75 mm 265/35 -> tire wall height is 92,75 mm LarThaL's suggested "should have comes" R18 265/35 -> tire wall height is 92.75 mm 285/35 -> tire wall height is 99.75 mm So suggested setup is halfway between stock R18 and R19 in terms of tire wall height PS: I'm well aware of the fact I'm resurrecting circa 7 years old thread. But hey, some facts were missing and since I'm dealing with same dilemma right now, I thought I would bring my two cents in |
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01-30-2020, 04:53 AM | #62 |
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Time flies when you're having fun. I had to much fun in my M3 and my insurance company bought the car from me. I do have, however, original 19 inch wheels left in my garage.
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01-30-2020, 09:31 PM | #63 |
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Holy old thread.
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