18's on a 370z

mdxj

BGTV, is your car lowered or was it the smaller sidewall that lowered the car? I am looking at keeping my sizes as close to the factory ratio as possible to keep ABS and VDC in check when on the street. I like your set up but brake clearance and is something that I am in the dark with.

BGTV8

My car is not lowered, but runs slightly smaller diameter tyres (F = 245/40R18 and R = 275/35R18 Direzza Star-spec). IMHO, a 650mm diameter tyre suits the suspension angles and lowering the car means shifting suspension pick-ups and since the Z34 is my DD and not a race car, its not something I'd consider.

I track the car regularly (VDC turned off, but ABS left on) and have only had trouble with ice-mode once - I posted my feedback into the ice-mode thread aq long time ago.

On the road, VDC activates a tad early, but I don't drive the car that hard on the road (we have lost one younger family member to road traffic accident and don't want another), so VDC stays on for the road but off for the track