Originally Posted by
b8audis4
I would definitely be interested to hear your comparisons on the M4 vs the S4. I know that the M4 is a much more performance oriented car. But engine comparisons, comfort, transmissions etc.
Well the comparison is abit complicated as the S4 feels completely different with and without minor mods. Stock the S4 feels heavy, especially up front when compared to the e46 and e93 M3. . There is quite abit of understeer due to engine being way up front and the weight of the car. The engine was lively and fast, but the stock exhaust is pretty muted and lame diminishing this somewhat . The handling of the S4 improved dramatically when lowered on HR OE springs and if you can get 20 lb/19 inch wheels and get the PSS tires at 25lbs, you are losing 10 lbs per corner and that is a lot and you can easily feel this difference in cornering and acceleration. And if you add a BBK you can drop another 10 lbs in front per corner. Now the car feels a lot more nimble but the aural feel isn't there due to exhaust. Once you upgrade that, its complete. A lot of steering feel and sounds mean now and pretty damn fast. I really like that SC'd engine. The S4 has been the best daily driver I have ever owned period.
Now to the M4, the steering feels abit mechanical and numb at low speeds but the feel comes alive at higher speeds(steering feel improves greatly). This car has 3 settings for steering feel, suspension stiffness, throttle response, shift points. Admittedly since I have owned the car for few days, I have only driven it in efficient mode for throttle, sport mode for suspension/steering. And I have to obey break in rules. Steering feels pretty heavy in sport mode and most seem to like efficient mode for steering on street and the track. Efficient mode on throttle does make the car feel abit sluggish for a car with 425 HP.
The exhaust sounds plain weird and I don't like it. Cold start is really loud and aggressive but inside the car when accelerating it sounds nothing like my AWE exhaust on S4. Car has active sound so maybe thats why it sounds so horrible I don't know. The steering is mechanical but pretty precise and turn in is sharp and crisp. No complaints, just feels very different than a 911 and modified S4. Once I use sport mode for throttle response like everyone seems to do, the quickness of the car will be more apparent. The way I drive it now, it feels no faster and maybe slower than my S4. But my S4 with mods was doing 0-60 in 4.3 to 4.4 all day without a tune.
The suspension is always reported as being stiff but I find it very comfortable. But I am used to coilovers and spring upgrades on all my cars so this car on sport setting doesnt seem stiff to me at all.
This time around, I only plan to do a few cosmetic upgrades and lower the M4 on springs and thats it. I won't modify it much at all. As of right now I like the M4 a lot but don't love it, but I never love any car at first. I didn't love the S4 stock but did like it a lot after few mods. Same will hold true for the M4 I am guessing, you find the weakness and modify to your liking.
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