04-20-2024, 09:06 PM | #45 | |
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He says he’s seen it happen multiple times. I’d like to know if those were pure tire switches or guys picking aftermarket wheels with tire sizes different than the factory options available on those cars. I’m under warranty for another 10 months. So I’ll probably stick with runflats for another round for two reasons: 1) the warranty point is a good one and makes sense 2) if I trade it before Feb, it can still be certified and sold as such and maybe I’ll get a little more for it if it has a new set of factory OEM spec tires on it. Won’t hurt, at least.
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04-21-2024, 06:10 AM | #46 | |
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He won’t reply with anything useful other than a snarky remark. He’s a pussy.
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04-21-2024, 07:52 AM | #47 |
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I suspect the reason that BMW pushes things like little stars on tires is a business decision that has virtually nothing to do with the life of one's driveline. Sure it makes sense that x-drive requires an all-square setup since the tires of different diameters would seriously stress a transfer case, but the vehicle has no way of knowing that its tires lack a star. On the other hand, these little stars, typically available only at dealers, ensure an aftermarket income since they are often the only game in town. Moreover, BMW's agreement with a few tire companies ensures favorable prices for BMW at the manufacturing level. And of course, the emphasis on run-flats provides BMW the logical rationale for not providing spares and tools that would (slightly) affect the company's profit margin.
For example, Toyota continues to offer spares and has no problems selling cars without run flats. Additionally, Toyota doesn't need to engage in some baseless narrative that insist that one buy only certain replacement tires. |
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04-21-2024, 08:15 AM | #48 | |
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Now what the star means is up for debate. I could give a shit as it’s the same price and it’s the Michelin I want. There are a few articles out there on what goes into earning the star. What’s wrong is people thinking it’s a dealer money maker with an up charge and you have to go to the dealer to get them. All car manufacturers have deals with tire manufacturers going into production. Nothing new here. Same deal they have with glass manufacturers and head and taillight manufacturers. Are they not supposed to keep costs down and make money? We could miserize about 1,000 things that go into making a car if we wanted to.
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04-21-2024, 06:12 PM | #49 |
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The idea of a dealer (or anyone else) making money is not the issue. It's the fact that Service Adviser will knowingly lie about what tires a customer might buy. Many customers are not the car savvy folks, but often individuals that wouldn't think to question their dealer's advice. As for your fondness of Michelins, why not listen to your dealer and replace the OE runflats with more of the same? Probably because you're lucky enough to know better.
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04-22-2024, 02:03 AM | #51 | |
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My Michelin’s are the OEM tire. They aren’t runflats.
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04-22-2024, 04:13 AM | #52 |
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IMO and it is only my opinion...BMW will use any available excuse to get out of an expensive warranty claim, they therefore make it widely known that a change from OEM designed and supplied tyres on a vehicle could impact on the drivetrain of x-drive vehicles. So when you turn up with a transfer case issue they simply say, wrong tyres mate that caused the issue.... goodbye!
From my logic you can't tell me that they produce a different x-drive system for different cars they produce? Okay they may have different tweaks and software in some (M2,3,4,5 cars) but the base mechanicals of the 4wd system must surely be the same? So, discounting full fat M's, you could some years ago here in the UK order your M140i with non runflats from new, there were also others but I can't remember which so will only use that example You can't tell me that they would have a different transmission installed on the production line because you ordered go flats? I also looked at some second hand wheels the other day that came off a new M240i Gxx series They were 8.5"x19" fronts & 9.5"x 19" rears but the standard tyre size was Front 245x35x19 and Rear 255x35x19 which puts them just the wrong side of the 1% tollerance and they were PS4S go flats. That car with more power is going to, by the nature of what it is, put more stress on components potentially resulting in earlier x-drive failings if the tyre issues are to be believed, kind of counter intuitive of BMW to produce such a car then?? In the current trend of building a car with everything already in it, then you paying to switch options on via a subscription, including a power upgrade, it kind of reinforces the fact that multiple use components across various platforms will be used therefore, if they will supply platform 1car 'X' with go flats & platform 1 car 'Y' with run flats the tyres can't be the issue. To substantiate my thoughts further. Goodyear F1 asymmetric tyres for BMW 5er's are RFT * but also designated MO for Mercedes, you can't tell me that the 4wd systems of both manufacturers are the same? Personally I have found the SA's in the dealership about as much use as a chocolate tea pot, they are fine if there is a book that tells them the answer but outside of that they are hopeless. I have asked specifics about tyre differences and the specifications but they can't give any supporting technical data to substantiate the 1% tollerance question. I suspect that their base level advice is to stop someone putting Chinese LinLong rubber on the front and some other Chinese different rubber on the rear, which will be way out of tollerence and thus highly likely cause issues, but if you use * rated go flats, that's hardly likely to be in the same boat. I'm not a particularly electronic tech savvy person but did read somewhere that in ID 7 & above there is an option in the tyre settings for 'individual' and if you put your individual rear tyre size in and drive off it will disconnect the 4wd system and calculate something to measure the fronts, if there is an issue you would like to think it would flag it up straight off and not wait until the transfer case disintergrates! As for me I'm off for some premium brand go flats and likey * rated...Happy motoring |
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04-22-2024, 04:30 AM | #53 | |
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I’m pretty confident I could run another reputable brand of the OEM size and if I had an issue, my dealer wouldn’t use it against me. Just wonder if we are bitching about something that really isn’t commonplace. I personally think we are talking about aftermarket wheels with oversized from spec tires. I don’t blame them for that. People run snows all the time and use the dealer to mount them every year. I used to, never got a warning.
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04-22-2024, 05:03 AM | #54 |
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Here is a positive dealer story something that could easily have been dismissed and denied warranty coverage. Another member here had Dinan springs and bump stop installed at a local shop (not a dealer). They developed rear suspension issues, a noticeable clunk going over bumps. He exhausted remediation with installer and I sent him to my SA/dealer. The car was in there for two weeks troubleshooting it. They removed the Dinan springs, swapped out components in the rear suspension, troubleshot it for weeks. At the end of the day, they ended up warranting all the work and fixes. How easy would it have been for them to blame it on aftermarket springs and dismissed it?
IDK, I've owned BMW's for the last 30 years and my experience isn't the dealer looking for ways to get out of footing the bill. As long as BMW NA pays, and they have a lot to do with that in terms of how they present the issue and the fix, they want the work. They also want you to come back and buy more BMW's, not leave a sour taste in your mouth. My $.02 and my experiences.
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04-22-2024, 08:46 AM | #56 |
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Understood, wasn't really asking you, more thinking out loud.
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04-22-2024, 10:14 AM | #57 | |
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I had to fight with my local dealership due to a rattle in my door needing to be repaired under warranty. They were initially denying to fix it under warranty due to the door being “improperly repaired” previously. The repair they cited as improper was a separate dealership in the area I moved from. All warranty work shows up in the BMW system so it shouldn’t have even been a fight… I’d imagine they would be even more annoying if third party stuff was actually installed. Glad you have a good dealership experience, but I wouldn’t paint it as universal. |
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04-22-2024, 11:28 AM | #58 | |
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04-24-2024, 11:27 AM | #59 | ||
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The other line of concern on here is the notion of keeping front and rear wheels within 1% of the diameters to not eff up the transfer case. My M5s were 1.01% different from front to back on OEM 20" wheels. The M5 OEM winter wheel set was on 19" wheels and was 2.3% different from front to back. I never had any problems on two M5s over 43,000 total miles. And, the winters were THEIR recommended set. There might be more leeway than they are letting on. But not swapping runflats to non-runflats? Yeah, that seems a bit suspect. Last edited by snowbimmer; 04-24-2024 at 12:19 PM.. |
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04-25-2024, 04:02 AM | #60 | |
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The RFT vs non-RFT point was clearly debunked, and the 1% diameter point is just as silly. Were it not, then this would mean that a bit excessive wear from something as simple as regular hard accelleration that engages one axle more than the other would destroy your drivetrain. Some of the fear porn and marketing stuff that gets passed on here is mind-bogglingly silly. It's rooted almost entirely in fear and emotion. |
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05-05-2024, 12:09 PM | #61 | |
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And 1600 miles in on the new set of Pilot Sport 4s All Seasons and I'm much happier with those than the Eagle F1s anyway, despite the early replacement. |
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05-05-2024, 05:12 PM | #62 | |
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Does not compute. |
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