The surreal experience when you shift at 8400 rpm in 5th going 280+kph to start over at 7200 rpm in 6th is the reason why I think 90s to mid 2000s were BMW's heydays. On E92 M3, 6MT would actually pull on DCT after 5th gear because it stays longer on the high revs. Contrary to most beliefs, BMW's twin plate clutch manual transmission is very robust and refined compared to any aftermarket heavy duty multi clutch system that either makes clutch too heavy or clunky at low rpm. Then again, more than 70% M drivers who go to track in Japan use 6MT because of simplicity(no need to worry about overheating) and "ultimate driving" experience. Also, DCT doesn't go flatbed after 7,500 rpm unlike Zfat that hates high rpm. I've seen M140i drivers rage because of it on tight circuits after a session or two IIRC it isn't an issue with DCT. It sucks when you are on the track/gymkhana in M3 and then Zfat refuses to downshift. I think they do to some extent looking at M850i launch they clearly understand general customers are more likely to buy M850i over a full fledged M8, which also started its life as a GT series race car and will translate some of that to its road car.īesides, cooling a heavy rotating inertia of Zfat is a big problem on track virtually every M235i I know runs big ass aftermarket coolers to compensate. M3 started out as a homologation race car, and I would like to believe BMW will keep true to its roots. I agree with what you say, but I still think M3 is a wrong car for such. It really bangs out the shifts in Sport+ and Sport shifting mode. The ZF 8HP in my wife's car can shift just as hard as a manual. I think many people as they get older appreciate the occasional soft shifting action of a conventional automatic. I drive a manual transmission and I drive it smoothly when I'm warming the car up or when I have my kid in the car. Makes the car much more hardcore and sporty. Similarly, that's why I love the manual it comes with twin plate clutch that gives head bang for every upshift you make. I am not sure I want luxurious, smooth feel on an M car. The ZF 8HP has basically the same performance as a DCT and can transform from a hard shifting sporty transmission to a luxuriously smooth transmission with the touch of a button. From now on, I doubt you'll be seeing many DCTs on front longitudinally mounted engine cars. Even the RS4 and the Alfa Giulia QV use the ZF 8HP. It's basically the same thing now.Ī lot of the reason supercars use DCTs is because mid-rear engine designs cannot easily fit a torque converted automatic. If you want an automatic, it shouldn't matter whether you get a ZF 8HP or a DCT. When I'm driving my wife's car in Sport+ mode, the shifts are really fast, responsive to manual shift requests, and shifts hard. In normal driving while the car is moving, the torque converter pretty much stays locked. The TC is basically only open when starting and stopping. Even if you are in one gear "manually" that wobbly slip that I associate with every normal automatic i have ever driven is annoying. When in manual mode will the TC still slip a little when you are on/off/on throttle, whether than be heavy or light throttle. How solidly do the ZF8's torque converters lock while in gear? Im sure there is variation in the tunes for all the various standard/sport/m-sport/m-performance/full-blown-M/etc configurations ( and modes )
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |