Definitely try changing the pressures, I noticed a big improvement in going from 24 to 26psi in the front tyres (Nankan 155's).Rob_Jennings wrote: What really is the difference in 145 155, given the car was specified to run on 145 is that the better option? I do find the 155's I have seem very spongy and a not very grippy on corners, I guess I should play with pressures on these before I change to see if I can get a better ride
I fitted 155's as 145's weren't readily available at the time. Now neither are but you can't mix them so it'll mean replacing all five if I change back and the two fronts are fairly new. I can see the argument about rolling on the narrow rim, maybe higher pressure helps counter that.