Re: +1, do it, you won't be disappointed, and if you (
The M5 bar is WAY more affordable than the Dinan bar and is only 0.5mm smaller. Like I said in my first post - no brainer.
You don't actually have to be sliding at a drift angle to feel the bar and it's reduction of the understeer. Even while still fully planted you can feel the tendancy of the car to turn or not. It's not necessarily "flatter", it just turns better.
I noticed a huge, immediate difference - very confidence inspiring and it felt like a mod giving me a real "advantage" on the road. Of course it's all blended in with the normal experience long ago but I can't imagine ever going back. The old bar is under my stairs just in case.
Since putting on the bar I've done a couple of emergency avoidance reactions in addition to sporty driving. One avoidance was really serious - stuff that has never come loose in the trunk and cabin ever before (no matter how sporty I was driving) flew all over. I basically had to cross my arms at 55mph on a three-lane width of asphalt and not go into the ditch on the other side. No problems with unanticipated oversteer. I have the incident burned into my memory in slow mo - the car, tires, everything behaved perfectly. The front and rear both developed slip angles with the slip helping the rear to come around a bit when I had to counter steer. If I had anything but my summer tires on (Toyo T1R at the time) things would have turned out different. The moral of this paragraph is that the M5 bar didn't go "too far" and is a great complement to the handling.