All the engineers and OEM factory did All the research and have proven time and time again 19" is the best diameters for the kind of car, I would keep the 19" just improve on the width of tires to gain better traction.
I'm currently running Michelin PS4 in the front I do 275x35x19 in the rear I do 305x30x19
I have good grips on a tires I have no complaints, they said it should give me at least 20,000 mi on it and I have no rubbings or whatsoever and yeah I also run HKS adjustable spring
Me too, I have 21 lock ECU and @DaBears tune for me..am running map6 with E40 blend....
My mods.
Ams intake , ftp charge pipe, Fi catless downpipe and Fi cat-back exhaust . Make sure look for @DaBears tune for you
We all know it's the oil level sensors. That's why I just purchased out right and fix It, didn't want my car to stay in the dealer too long or doing all this s***
I have installed h&r spring in my car and the car keep pulling to the right it doesn't matter what kind of alignment you do. So I replace it with HKS adjustable spring and the car drive straight like an arrow.
According to BMW dealer that is the problem and as long as you change that you be all right as I said this is my third oil change and I did not have any more oil consumption since the second oil change
After I replace the oil pressure sensor valve didn't have any more issue. This is my third oil change and still don't have any issues with the consumptions starting from the second oil change. I think the whole hype about the oil consumption, I really think ( my own opinions) the oil pressure...
to solve on to save you time you could have asked the previous owner to give you the password and hopefully it will link to the car app and you can access the app. And from there you can change the password and unlink the car and link to your new car.
Or you can give a shout out to @DaBears he...
I definitely feel the difference when @DaBears giving me that custom map.. The acceleration much smoothers and full boost compared to the OTS map. And you are right He's very responsive and very helpful when you needed help and I will definitely recommend him.