Nissan 370Z Forum - Increasing sidewall height on stock Rays

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Increasing sidewall height on stock Rays

I initially thought of going 285/35-19 all around. I just put on 285's on the rear and that increased the diameter .4" so there's less wheel gap now for a pseudo lowered look. For the front, the driver side wheel already has a bent lip and is warped from NYC potholes. I was wondering about going up to 245/45/19 or 275/40/19 which would give a full inch more sidewall for wheel protection and less wheel gap so it'll look lowered without actually being lowered. Only thing I'm questioning right now is if the extra sidewall will have a noticeable hit on handling and driver feel. I'm very particular on the road feel and choose my tires according to the 'Steering Response' according to Tirerack's surveys.

Those tire sizes will rub the plastic liner up front. I run 295/40-18 (about .5" shorter) up front on my race wheels and I've worn a small hole in the plastic liner. And that's at stock ride height.

Don't these effect you speedometer reading? Or can the ECU be reprogrammed?

Quote:

Originally Posted by gomer_110 (Post 2540304)

Those tire sizes will rub the plastic liner up front. I run 295/40-18 (about .5" shorter) up front on my race wheels and I've worn a small hole in the plastic liner. And that's at stock ride height.

Wow 295 up front. Quite aggressive. I'm surprised an extra .5" would rub since there seems to be ample room for more than an inch.

Quote:

Originally Posted by cooltoy (Post 2540437)

Don't these effect you speedometer reading? Or can the ECU be reprogrammed?

It does affect the speedometer reading, but only the rear wheels read. The stock speedometer reads almost 2mph too slow anyways so the .4" bump up from the 285 35 19 tires makes it more accurate. ECU can be reprogrammed as well, but aint no body got time fo that.

Quote:

Originally Posted by kenchan (Post 2540957)

:shakes head:

go away :mad:

I would put taller springs on and then go with some 60 series all around.

Quote:

Originally Posted by wdkwang (Post 2541356)

go away :mad:

Reported...

:shakes head:

Quote:

Originally Posted by wdkwang (Post 2540256)

Increase the diameter of the tires to make the car looks lower.......????

:icon18::icon18::icon18::icon18:

Go for it dude...!! I really want to see your reaction when you see the actual effect...!!!!!!

:bowrofl::bowrofl::bowrofl::bowrofl::bowrofl:

Quote:

Originally Posted by onzedge (Post 2541441)

Reported...

:shakes head:

relax guy i was joking around with him

Quote:

Originally Posted by wdkwang (Post 2541732)

relax guy i was joking around with him

Son, I am relaxed. Good luck with your car. Even though one may look at your efforts as being an affront against the Z, I still wish you the best.

You also need to watch the front vs rear rolling diameter - get too far out and it messes with the ABS braking systems

Quote:

Originally Posted by alcheng (Post 2541694)

Quote:

Originally Posted by onzedge (Post 2541805)

Son, I am relaxed. Good luck with your car. Even though one may look at your efforts as being an affront against the Z, I still wish you the best.

to clarify, i'm all about function. i do drive my car hard drifting and other sorts of spirited driving. i decided to go with a square 285mm setup once my front tires wear out via cossie and other people who track their z's recommendation for better handling and grip.
the purpose of this thread's idea is because i dd mine on very sh1tty nyc roads. both rear wheels have inch cracks on the inner lip which have been welded. the front driver side wheel is warped and has a bent lip from a big hotpole that i missed seeing at night, which will taken care of eventually. that's where the idea of increasing the front sidewall to a 45 series came about. the lowered look without being actually lowered was just an added bonus thought. as of now on stock height, my Borla exhaust pipes are completely flattened out. so 3 out of 4 wheels being damaged in 38k miles is pretty bad, even being forged. my old integra's oem alloys took a beating for almost 20 years and never had a problem, although they were 14s on 60 series tires.

Quote:

Originally Posted by skidad62 (Post 2541837)

You also need to watch the front vs rear rolling diameter - get too far out and it messes with the ABS braking systems

Please elaborate.

Higher ,side wall means bigger diameter,also much heavier...blunts the car's performance....anybody weights how much weight 275/40-19.?But the good thing is more comfortable ride.:bowrofl:

I like how my 285's in the rear look....happy I sized up...

I must be real old cause I don't get it & never did

First, raising the rear with bigger tires. Doesn't that put even MORE weight on the front of car?
Second, I used to like to drive fast on country roads. I left my car's suspension 100% stock, just got a bit wider & better tires all around. The car handled great without it being a scoop for scraping up road kill. On my old 350, I installed 17" wheels with bigger/wider tires front & back. Result=a good stance with plenty of rubber for a smooth & great handling experience.

I don't understand how anyone can enjoy their car when driving it over a small rock or a piece of wood will tear the front & underside of the car.

I don't get it when I see people guiding the driver just to drive up a driveway :confused:

I have only one picture (the rear)in my home page. No spacers & the car looks tough & clean looking. I wish I had more picks. Maybe later.