Harnodi | 2011 BMW Z4 sDrive35is First Drive Review | BMW has long made machines that embody its “Ultimate Driving Machine” motto, but some of its more recent products have been more emblematic of the company’s other, softer, and less focused tagline, “Joy.” For example, instead of a thrilling, satisfying roadster, the Z4 is a boulevardier more likely to be parked among a sea of beige luxury SUVs at the country club than spotted hustling over mountain passes. Given the brilliance of nearly every other BMW, the unfocused handling of what should be one of the company’s sportiest cars is even more of a bummer.


The clues are there in the folding hardtop, the electric hand brake, the light steering, and so on the Z4 isn’t aimed toward enthusiast drivers. So what’s up with this sDrive35is model? It’s ostensibly the Z4 for those who want an Ultimate Driving Machine, so why throw more thrust 35 hp in this case at a car that already has plenty and not fix the disappointing chassis? To charge more, of course, for what amounts to little more than some standardized options and what an aftermarket tuner could do with an ECU reflash. It’s no coincidence that BMW announced its new 335is in the same time frame as it did the Z4 sDrive35is. That 3-series model and this Z4 are powered by an uprated and upgraded version of the sweet N54 3.0-liter twin-turbocharged inline-six. The N54 was good for 300 hp and 300 lb-ft in its previous, more ordinary applications, but all the “aye ess” cars receive software that cranks up the turbo boost, for a total output in the Z4 of 335 hp at 5900 rpm and 332 lb-ft of torque from 1500 to 4500 rpm. Mash your right foot to the floor, and a computer-controlled overboost function will provide a seven-second gust of 37 additional lb-ft of torque.


If the engine computer is satisfied with turbo temperatures and other vital signs, the incremental torque boost can be accessed over and over again under wide-open throttle. The 335is makes 320 hp, down 15 from the Z4is because of more restrictive airflow, and the 3er gets an upgraded cooling system with an additional radiator and cooling ducts; this modification isn’t found on the roadster because BMW admits it doesn’t expect many owners to track their Z4s. The new seven-speed, dual-clutch automated manual (abbreviated DCT by BMW) is the only transmission offered on the Z4 sDrive35is.

Auto Start Stop function featured for the first time in conjunction with six-cylinder engine and eight-speed automatic transmission. Four-wheel drive technology BMW xDrive harmonised for optimised driving dynamics featured as standard, Performance Control optional. The BMW X3 also comes with a newly conceived suspension technology, electric power steering featured for the first time in a BMW X model, variable sports steering optional.

Harnodi | 2011 BMW 535i | The 535i has a high level of available infotainment technology and driver aid features, including a Park Assist feature that automates parallel parking. Performance is good and efficiency is up despite this being a larger, more spacious sedan than years prior.

The bad: Suspension feels a bit floaty and body roll is evident despite active suspension tech. Nearly every feature we like in the 5 Series is an additional cost option, which adds considerably to the bottom line.

The bottom line: The 2011 BMW 535i is easily one of the best sport sedans in its class for handling, fit and finish, and prestige, but it doesn't represent the highest value on the market.

The new-for-2011 BMW 5 Series is no mere visual refresh. This updated model is physically larger, yet visually smaller. It features updated drivetrain tech and an overhauled infotainment system, but has the 5 Series lost some of the fabled BMW driving dynamic with this revision? We got behind the wheel of 3.0-liter TwinPower turbocharged 535i variant to put it to the test.

Driving dynamics
Beneath the BMW's hood breathes a 300-horsepower, TwinPower turbocharged three-liter inline six-cylinder engine. However, this isn't exactly the same mill that can be found in the previous model year. For 2011, BMW has moved from a true twin-turbo setup to a twin-scroll single turbo for the 3.0-liter engine's forced induction. This configuration retains the quick spooling characteristics of the twin-turbo, reducing turbo lag, and maintains identical power ratings and the same 300 foot-pounds of torque as the previous model had--although peak torque now comes on 200rpm earlier.

Power delivery is smooth, with a flat torque curve that makes the inline six-cylinder feel more like a small displacement V-8. However, though the 535i isn't wanting for grunt, its power delivery is not overwhelming. There's an adequate amount of torque to motivate the car, but not enough to bend the laws of physics and mask the fact that you're behind the wheel of heavy sedan.
Two automatic transmission options are available on the 5 Series, a no cost optional 8-speed and a $500 sport automatic with paddle shifters, but we were happy to find a six-speed manual shifter gracing our tester's center console. Shifts are chunky, with deliberate engagement, and the heavy clutch pedal will give your left leg a workout, but there is little that's more satisfying than rowing through your own gears.

Between the sedan's unibody and where the rubber meets the road there's a good deal of adaptive chassis tech available to the 5 Series owner. By checking the box next to the $2,700 Dynamic Handling Package, the 535i gains electronic damping control, which varies the stiffness of the sedan's suspension for a more comfortable or sporty ride, and Active Roll Stabilization (ARS), which uses adjustable antiroll bars at the front and rear of the vehicle to help keep the sedan flat when cornering. Tying these systems together is BMW's Adaptive Drive system, which gives you the choice of Comfort, Normal, Sport, and Sport+ presets.

Choosing the Dynamic Handling Package requires you to also choose the Sport Package, adding 19-inch wheels with performance tires, swapping in sportier seats and steering wheel, and raising the top speed limiter-- all for an additional $2,200.

Even with the Adaptive Drive set to Sport, the BMW feels heavy through twisty mountain roads. Body roll was evident and noticeable, despite the ARS system, and the 535i feels as though it's relying too heavily on its gadgets to offset the increased mass. Thankfully, although the BMW rolls, it doesn't feel like it's floating or is disconnected from the road, and the increased low-end grunt meant that we were almost never caught without enough torque to power the sedan out of turns.

After unsuccessfully trying to make a canyon carver out of this Ultimate Driving Machine, we switched modes and tackled a few wider roads with sweeping high speed turns and found the 5 Series to be an excellent grand-touring machine. Its long wheelbase and compliant suspension made the sedan quite comfortable for relaxed blasts through the countryside, but its communicative steering never lets you forget that you're driving rather than merely transporting.

Also available on the 5 Series is a feature called Integral Active Steering, which adds up to 2.5-degrees of rear wheel steering. It steers against the front wheels at low speeds to reduce turning radius, and steers with the front wheels to add stability for highway speed lane changes. Our vehicle was not equipped with this $1,750 option.

Cabin tech
The 5 Series' cabin tech package checks all of the right boxes, but only if you make sure to check the those boxes when making your purchase, as nearly all of the Beemer's gee-whiz gadgets are optional.

Starting at the top of the center console, the BMW's wide-screen hard-drive-based navigation system features 3D terrain data and satellite imagery when zoomed far enough out and, in major metropolitan areas, 3D building data when zoomed far enough in. The wide screen allows users to split the screen to display secondary data (audio source, trip computers, and turn-by-turn directions) alongside the map, or fill the entire screen with the beautifully rendered maps. The navigation system also features traffic data.

Bluetooth connectivity with BMW Assist is standard on the 535i. BMW Assist is the automaker's connected-telematics system that integrates GPS positioning, cellular connectivity, and something of a concierge service to give you access to a live operator who will assist the driver with locating destinations (and cueing up the vehicle's turn-by-turn directions) or alerting first responder services in the event of an emergency. The system also enables hands-free calling with voice activated dialing and supports Bluetooth PBAP, allowing it to automatically import contacts from a paired handset that also supports this profile. A2DP audio streaming is not supported, so smartphone users wanting to get their Internet streaming-radio fix will need to use the BMW's analog auxiliary input.