Nissan 370Z Forum - Sidewall Height on Front tires

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Nissan 370Z Forum (http://www.the370z.com/)

- Nissan 370Z General Discussions (http://www.the370z.com/nissan-370z-general-discussions/)

- - Sidewall Height on Front tires (http://www.the370z.com/nissan-370z-general-discussions/97583-sidewall-height-front-tires.html)

BGTV8

10-30-2014 03:45 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.

kenchan

10-30-2014 04:26 PM

Quote:

Originally Posted by kenchan (Post 3011484)

youll want to compare load rating... and why nitto's. :icon08:

Quote:

Originally Posted by osbornsm (Post 3011563)

Nobody makes a decent tire with the two sizes listed below, besides PSS, and those are too much for a Track Tire.

- OEM Front spec: 245/45/18
- OEM Rear spec: 275/40/18

thats not even an answer..

kenchan

10-30-2014 04:27 PM

like 2 geezers talking...

man that samich was good, how was yours? :yum:

yep agree, psi should read 35 cold.

:ugh:

IDZRVIT

10-30-2014 04:34 PM

Quote:

Originally Posted by speedfreek (Post 3011113)

Why do you want to run a smaller sidewall on the front?

It will lower your front by about an inch.

245/40 = 25.7 inch tire height
245/45 = 26.7 inch tire height

Nope. It will only lower the ride height by 1/2".

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