Tyre Sizes And Attessa

[shredder667]

ok, so my 32 should run tyres that are 235/45/17, but if i have tyres that are 245/45/17 (ie. an inch bigger in diameter) will that affect how attessa works? i thought it didn't matter as long as its the same all round, but when i first bought the car (it came with the 245/45) i noticed the front torque gauge never moved, but when i switched to the 235/45's it seemed to move a lot more often as i accelerated. am i crazy?

[Tomei_33]

i have different sizes tyres on my gtr ( backs are bigger then fronts) and when attessa kicks in, its really crappy, dont do it lol.. but if all 4 tyres are the same it should be ok... are your new tyres brand new? maybe they are just less grippy?

[godzl1975]

The rolling diameter of the rear wheel/tyres has to be bigger than the fronts or the attessa with play up....or just run same tyre sizes.