Their ambitious name notwithstanding, Best-Tuning has come up with a nice and well-rounded upgrade package for the BMW 435i that can almost stop you from buying an M4. Almost. They’ve picked a 435i xDrive and boosted its power while upgrading the chassis. But they haven’t done much to the exterior.
Best-Tuning BMW 435i gets an ECU transplant that results in the power output to go up from the standard 306 PS to 365 PS. That is a decent result, considering it’s only electronics, and the fact that it only costs 1,299 Euros.
The next item on the list for Best-Tuning BMW 435i is a set of KW coilover suspension that set you back 1,100 Euros, but ensure greater handling and road holding. It is money well-spent.
As for the exterior, as mentioned not much has changed apart from the wheels. Best-T has replaced the stock BMW wheels with a set of aftermarket 20-inch rims with 235/30/20 front and 275/25/20 rear tires. The set costs 2,600 Euros.