255/40R19 instead of 245/40R19?

350zrb · 09-30-2009, 08:12 AM

Hi,
I know most people use 245/40R19 on OEM wheel in front.
But I am considering 255/40R19 in front.
Any pro of con of doing this?
Of course, I will stay with 275/35R19 in back.
Thanks

wakeboardr116 · 09-30-2009, 08:33 AM

IMO I'd just go with the 245's. 255/40 will have a larger diameter than the 245s. Ideally you want to keep the diameter as close to the stocks as possible and 245/40 is as close as you can get.

shumby · 09-30-2009, 09:41 AM

why not a 285 in the back?

g37rider · 09-30-2009, 11:37 AM

I run 255/40/19. Wider look and better handling.

350zrb · 09-30-2009, 03:42 PM

Quote:

Originally Posted by shumby

why not a 285 in the back?

Because I think that 275 on 19x9 is already pushing it?
275 mm on 9 " seem a lot already.
On the other hand
245 mm on 8.5" still have room for 255 mm.

350zrb · 09-30-2009, 03:43 PM

Quote:

Originally Posted by g37rider

I run 255/40/19. Wider look and better handling.

In front on OEM wheel?
Any rubbing?

g37rider · 09-30-2009, 04:40 PM

No rubbing on an aftermarket 19x9.5 wheel. 255 will surely fit the 19x8.5 wheel.

Quote:

Originally Posted by 350zrb

In front on OEM wheel?
Any rubbing?

Xcalibur · 09-30-2009, 05:00 PM

255 is the tire Width and yes it will fit on the stock rims.

40 is your tires aspect ratio. I would stay 45 in front on those 19s. If your not dropped the last thing you need is a lower profile tire! That gap will be out of control!

Loi · 09-30-2009, 05:18 PM

255/40 on the front is possible, but it will look too "beefy" and there may be rubbing issue.

g37rider · 09-30-2009, 06:00 PM

There's no way 40s on 19s look too beefy, unless you like the look of a bead of rubber on your rims. No rubbing issues for me and I'm dropped.

Quote:

Originally Posted by Loi

255/40 on the front is possible, but it will look too "beefy" and there may be rubbing issue.

greggv · 09-30-2009, 08:52 PM

I had 255x40 on my stock front wheels and had no problems. Changed to Iforged, now I've got 245x40 in the front. Same difference. 10 mm is only about 1/4 inch. Can you tell that from a distance? Use whatever size you want.

dxxd · 10-01-2009, 12:58 AM

wakeboardr116--IMO I'd just go with the 245's. 255/40 will have a larger diameter than the 245s. Ideally you want to keep the diameter as close to the stocks as possible and 245/40 is as close as you can get.

Diameter of OEM fronts, 225/45-19, is 26.97 inches. Diameter of 245/40-19 is 26.71 inches and diameter of 255/40-19 is 27.03 inches. So 255/40-19, not 245/40-19, is as close as you can get!

350zrb · 10-01-2009, 09:25 AM

Diameter of OEM fronts, 225/45-19, is 26.97 inches. Diameter of 245/40-19 is 26.71 inches and diameter of 255/40-19 is 27.03 inches. So 255/40-19, not 245/40-19, is as close as you can get![/quote]

I agree with 255/40/19 is closer to 225/45/19 than 245/40/19.
This is why I am thinking about 255 instead of 245.

I think the reason most people use 245 in front because they move 245 from the back and use them in front?

HamstersG · 10-01-2009, 01:50 PM

I struggled with all the variables as well. Here is a post with some data that may be useful.

http://myg37.com/forums/wheels-and-t...ize-table.html

Quote:

Originally Posted by 350zrb

Hi,
I know most people use 245/40R19 on OEM wheel in front.
But I am considering 255/40R19 in front.
Any pro of con of doing this?
Of course, I will stay with 275/35R19 in back.
Thanks

350zrb · 10-01-2009, 02:00 PM

Quote:

Originally Posted by HamstersG

I struggled with all the variables as well. Here is a post with some data that may be useful.

http://myg37.com/forums/wheels-and-t...ize-table.html

So, what do you end up using in the front?

09-30-2009, 08:12 AM	#1
350zrb Registered User Trader Score: (0) Join Date: Sep 2009 Location: Chesapeake, VA Posts: 106	255/40R19 instead of 245/40R19? Hi, I know most people use 245/40R19 on OEM wheel in front. But I am considering 255/40R19 in front. Any pro of con of doing this? Of course, I will stay with 275/35R19 in back. Thanks

09-30-2009, 11:37 AM	#4
g37rider Registered User 2008 Infiniti G37 Trader Score: (3) Join Date: May 2008 Location: Los Angeles Posts: 133	I run 255/40/19. Wider look and better handling. __________________ '08 G37 \| HKS Air Filters \| Tanabe: Sustec Pro S-0C, Y-Pipe, Medalion \| 19" Volk G10s

09-30-2009, 05:00 PM	#8
Xcalibur Go Heat! 2008 Infiniti G37 Trader Score: (1) Join Date: Aug 2008 Location: Miami, Florida Posts: 659	255 is the tire Width and yes it will fit on the stock rims. 40 is your tires aspect ratio. I would stay 45 in front on those 19s. If your not dropped the last thing you need is a lower profile tire! That gap will be out of control! __________________ X©alibûr» 2008 G37S - 6MT\| Kicker \| Stillen \| Eibach \| SPL \| XIX \| VOLK \| Vredestein \| SportWing \| PIAA \| V-LEDS \| BERK \|

09-30-2009, 05:18 PM	#9
Loi Registered User Trader Score: (0) Join Date: Jan 2008 Location: Central Florida Posts: 453	255/40 on the front is possible, but it will look too "beefy" and there may be rubbing issue. __________________ 2008 IP G37S 5AT - Volks SF-Challenge

09-30-2009, 08:52 PM	#11
greggv Registered User Trader Score: (0) Join Date: Sep 2007 Location: socal Posts: 82	I had 255x40 on my stock front wheels and had no problems. Changed to Iforged, now I've got 245x40 in the front. Same difference. 10 mm is only about 1/4 inch. Can you tell that from a distance? Use whatever size you want. __________________ Eibach springs, Magnaflo exhaust, iForged wheels, and Vredestein tires

09-30-2009, 08:33 AM	#2
wakeboardr116 ___________ 2008 Infiniti G37 Trader Score: (4) Join Date: Dec 2007 Location: Oklahoma Posts: 2,504	IMO I'd just go with the 245's. 255/40 will have a larger diameter than the 245s. Ideally you want to keep the diameter as close to the stocks as possible and 245/40 is as close as you can get.

09-30-2009, 09:41 AM	#3
shumby Premier Member Trader Score: (1) Join Date: Sep 2007 Location: With your mom Posts: 1,959	why not a 285 in the back?

10-01-2009, 12:58 AM	#12
dxxd Registered User Trader Score: (0) Join Date: Apr 2009 Posts: 6	wakeboardr116--IMO I'd just go with the 245's. 255/40 will have a larger diameter than the 245s. Ideally you want to keep the diameter as close to the stocks as possible and 245/40 is as close as you can get. Diameter of OEM fronts, 225/45-19, is 26.97 inches. Diameter of 245/40-19 is 26.71 inches and diameter of 255/40-19 is 27.03 inches. So 255/40-19, not 245/40-19, is as close as you can get!

10-01-2009, 09:25 AM	#13
350zrb Registered User Trader Score: (0) Join Date: Sep 2009 Location: Chesapeake, VA Posts: 106	Diameter of OEM fronts, 225/45-19, is 26.97 inches. Diameter of 245/40-19 is 26.71 inches and diameter of 255/40-19 is 27.03 inches. So 255/40-19, not 245/40-19, is as close as you can get![/quote] I agree with 255/40/19 is closer to 225/45/19 than 245/40/19. This is why I am thinking about 255 instead of 245. I think the reason most people use 245 in front because they move 245 from the back and use them in front?

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