Not long had my 328 vert, just took her down south and back again and she ran very well. Got 2 new rear tyres when I got back, went from 235/40/17 to 245/40/17. I picked up a hardtop while down south and after having the tyres fitted the car seemed to tramline quite badly. I believe this is due to a) wider rear tyres Vs the 215/40 fronts and b) the hardtop adding support to the car.
The hardtop is now off and the car feels better but I want the problem solved, along with new wishbones, will increasing the front tyre size to 225/40 make it better?
Also, what size is the oem 328i vert arb as I'd like to poly bush it.
Thanks in advance