Just added a new polished aluminum shift knob which replaces my illuminated shift knob. I like the feel of the polished aluminum much better than leather. This polished aluminum knob is also shorter than the illuminated knob, so the shifts between gears feel a lot sportier.
Update: Jon Maddux sent pictures of some additional BMW shift knobs and their BMW part numbers. There are several kinds of “chrome” shift knobs available from BMW. They have subtle differences, but before you drop $70+ on a shift knob, they are worth noting. Note that both “bright” knobs are plastic. The brushed and matte knobs are solid aluminum. Ron Styger reports the weight of the different knobs are .081kg (25-11-1-434-003), .079kg (25-11-2-492-481), 0.132kg (82-23-9-405-686) and 0.128 (25-11-9-416-257). Retail prices are $85 for (25-11-1-434-003), $65 for (25-11-2-492-481), and $98.25 for (25-11-9-416-257).
|Pros:||Increased shift feel, great looks|
|Cons:||Cold/hot to the touch depending on the season|
|Cost:||$139 from Titanium Cavallino|
Short shift kits have become a popular upgrade for Z3 owners, but the good kits can be quite expensive. The popular UUC short shift kit, reviewed elsewhere on the ///MZ3.net, is $300 and the imported AC Schnitzer shifter—try that five times real fast—is an eye watering $1000+. Richard Carlson’s ///MZ3.net article on short shifters, ‘The Short End of the Stick’, offers a clear overview of the concepts and techniques involved in designing an effective short shift kit, and touches briefly on a low-cost approach to improved shift feel—a shorter shift knob. Richard experimented with an inexpensive round plastic ball, which he admits didn’t enhance the appearance of the cockpit, but which did result in snappier shifts.
Compare Stock vs 130R
Titanium Cavallino offers an attractive shift knob which they call the 130R knob. Styled along the lines of the classic Ferrari round knob, the 130R is beautifully presented in polished titanium, and is 9/16″ shorter than the stock BMW knob. If you’re wondering whether a 9/16″ shorter knob will make any difference, refer again to Richard Carlson’s article. He presents a table which indicates that a 3/4″ shorter shifter on an M Roadster would result in a 12% reduction in throw. I figure that the 130R will shorten throw by 8-10%. Additionally, the 130R weighs 9 ounces—5.5 ounces more than the stock knob. That extra heft should further improve the new short-shift feel.
Unlike many aftermarket knobs, the 130R is designed expressly for the BMW. This means that, rather than being installed using set screws, the 130R is fixed to the shift lever in the same way that BMW engineers have designed for the stock knob; a snap ring arrangement to hold the knob on the shaft and, to prevent turning, a pin inside the knob which engages a notch in the top of the shaft. Once properly installed the knob cannot rotate, and it would take 80 pounds of vertical pull to remove. If you worry about the knob coming off in your hand in the middle of a fast sweeper, this is the only way to go.
Installation is quite easy. Remove the stock knob by grasping it firmly with two hands and giving it a strong upward yank. Careful that your chin isn’t in the way! Knobs with internal lighting have a long enough wire that breaking the wire shouldn’t be a problem, but take care. If the knob is wired then lift the edges of the shift boot, locate the connector at the end of the wire, unplug it, then thread the wire and connector through the shaft hole in the boot. Installation of the new knob is just the reverse. Slide the knob down over the shaft, insuring that the internal pin is aligned with the notch in the top of the shaft, then press down until the snap ring engages. Done!
Road test time! So, what does it feel like? As expected, it doesn’t change the feel in any revolutionary way. The throw is tightened up, and the extra weight of the knob adds some inertia which helps the shifter across the gate. To my eye the looks are wonderful, but don’t leave the car outside with the top down or you may burn your hand. At the other end of the temperature spectrum, the knob is unpleasantly cold to the touch until it picks up warmth from your hand. I particularly like the standard BMW mounting method and, on balance, I consider this a worthwhile addition to my M Roadster—at least until Santa brings me a UUC shifter.