Increasing sidewall height on stock Rays

wdkwang · 10-24-2013, 08:52 PM

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.

gomer_110 · 10-24-2013, 09:10 PM

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.

cooltoy · 10-24-2013, 10:26 PM

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

wdkwang · 10-25-2013, 10:31 AM

Quote:

Originally Posted by gomer_110

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

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.

kenchan · 10-25-2013, 11:01 AM

wdkwang · 10-25-2013, 02:53 PM

Quote:

Originally Posted by kenchan

go away

onzedge · 10-25-2013, 03:26 PM

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

onzedge · 10-25-2013, 03:26 PM

Quote:

Originally Posted by wdkwang

go away

Reported...

alcheng · 10-25-2013, 06:22 PM

get this...!!!

alcheng · 10-25-2013, 06:25 PM

Quote:

Originally Posted by wdkwang

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.

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

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

wdkwang · 10-25-2013, 07:02 PM

Quote:

Originally Posted by onzedge

Reported...

relax guy i was joking around with him

onzedge · 10-25-2013, 08:14 PM

Quote:

Originally Posted by wdkwang

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.

skidad62 · 10-25-2013, 08:44 PM

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

wdkwang · 10-26-2013, 06:08 PM

Quote:

Originally Posted by alcheng

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

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

Quote:

Originally Posted by onzedge

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.

cooltoy · 10-26-2013, 08:48 PM

Quote:

Originally Posted by skidad62

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.

10-24-2013, 08:52 PM	#1 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 21	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. __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo! Last edited by wdkwang; 10-25-2013 at 10:23 AM.

10-24-2013, 09:10 PM	#2 (permalink)
gomer_110 A True Z Fanatic Join Date: Aug 2011 Location: Perrysburg, OH Posts: 17,992 Drives: '11 Nismo #528 GM Rep Power: 36941	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. __________________ '11 370Z Nismo #528 Fast Intentions \| Stillen \| Motordyne \| Uprev \| CSF \| Zspeed \| Z1 Motorsports \| AST \| Swift \| SPC \| SPL \| Whiteline \| Hotchkis \| Bride \| Schroth \| Robispec \| Cusco \| Nismo \| Volk \| Forgestar \| Hoosier \| RJM '17 Titan Bone Stock

10-25-2013, 11:01 AM	#5 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	onzedge and osbornsm like this.

10-25-2013, 03:26 PM	#7 (permalink)
onzedge A True Z Fanatic Join Date: Apr 2010 Location: Battle Lake MN Age: 64 Posts: 183,964 Drives: 370Z 240Z Rep Power: 2684737	I would put taller springs on and then go with some 60 series all around. TerribleONE likes this. __________________ Koni\|Swift\|Michelin\|Motordyne\|Berk\|RJM Performance\|Gates\|SPL\|Motul\|Technafit\|Ate Super Blue\|Hawk Tommy Kaira\|Momo\|Optima\|Hella\|Hotchkis\|Red Line\|ZSpeed\|Stillen\|B&M\|H&R

10-25-2013, 06:22 PM	#9 (permalink)
alcheng A True Z Fanatic Join Date: Jun 2011 Location: Toronto Posts: 28,894 Drives: 2011 ZR PW w/Clutch Rep Power: 418354	*get this...!!!* kenchan, onzedge and HockeyAnimal1 like this.

10-24-2013, 10:26 PM	#3 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,003 Drives: 14 PW 370Z S/T MT Rep Power: 243724	Don't these effect you speedometer reading? Or can the ECU be reprogrammed?

10-25-2013, 08:44 PM	#13 (permalink)
skidad62 Base Member Join Date: Aug 2013 Location: Moncton NB Canada Posts: 214 Drives: 2010 370Z Roadster Rep Power: 13	You also need to watch the front vs rear rolling diameter - get too far out and it messes with the ABS braking systems __________________ 2010 370Z Black Cherry Roadster Touring Sport 2003 Mustang Vortech YSI 640 rwhp - sold but not forgotten

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