Nissan 370Z Forum - View Single Post

BGTV8 · 10-30-2014, 04:45 PM

So, my track tyres are 265/35R18 on 9.5" wide wheels all round (square setup), +22 in front and +12 on rear. I could go +12 on front and +0 on rear but would need to roll inner fender lips.

My DD wheels are 8.5 front an 9.5 rear and I now run 245/45R18 fronts and 275/40R18 rears to get the gearing with the 4.08:1 diff gears I now run as close to OEM as I can.

Before the diff gears were changed, I ran 245/40R18 front and 275/35R18 rear as DD tyres.

What you cannot do is use tyres with OD more than 4-5mm diameter difference as that will confused the stability control.

10-30-2014, 04:45 PM	#16 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,514 Drives: 09 Nissan 370Z M6 Rep Power: 39973	So, my track tyres are 265/35R18 on 9.5" wide wheels all round (square setup), +22 in front and +12 on rear. I could go +12 on front and +0 on rear but would need to roll inner fender lips. My DD wheels are 8.5 front an 9.5 rear and I now run 245/45R18 fronts and 275/40R18 rears to get the gearing with the 4.08:1 diff gears I now run as close to OEM as I can. Before the diff gears were changed, I ran 245/40R18 front and 275/35R18 rear as DD tyres. What you cannot do is use tyres with OD more than 4-5mm diameter difference as that will confused the stability control.