18' wheels to 19' wheels

akaaronkatz · 03-05-2012, 09:45 PM

I've thought about going from the stock 18' wheels to 19' Avant Garde M368's. Has anyone had any issues with this and would going from 18' to 19' wheels mess up my mileage odometer? All feedback is appreciated, Thanks

alcheng · 03-05-2012, 09:51 PM

Go with the size of OEM tires then you are good to go.

Otherwise, tech at the tires shop should know.

akaaronkatz · 03-05-2012, 09:56 PM

Quote:

Originally Posted by alcheng

Go with the size of OEM tires then you are good to go.

Otherwise, tech at the tires shop should know.

Thanks, but the smallest size are 19's i believe.

Huck · 03-05-2012, 09:59 PM

When you get bigger wheels you usually get thinner tires, so the overall circumference of the tire stays the same, same rotational ratio, blah blah blah. If you get a much bigger tire then yeah it can throw off your tachometer. Like alcheng said, shop techs can fix it for you.

PapoZalsa · 03-06-2012, 07:33 AM

Do a serach for tire calculator size, it will give you the sizes comparables with your current ones. However the Sport Pkg size on the Z is 19".

2011 Nismo#91 · 03-06-2012, 08:05 AM

19" is perfectly fine, your tach will be unchanged (engine RPM stays the same). Your Speedo will be off. I believe the bigger the tire the lower it reads smaller higher. Bigger circumference leads to less revolutions of the tire and a lower speed reading. Its usually a minor change ~2mph you can calculate it or find an online tool, its simple math.

kenchan · 03-06-2012, 11:45 AM

yah, 19's are fine. the 368's only come in 8.5" and 9.5" no? will still work for our stock tire sizes, but just wondering.
i think the offsets were like 35/40 or something so you'll need spacers for the rear for sure.

anyone know if there are sufficient cavities between the lug bores on the disc to support bolt-on spacers?

i was looking at getting them for my G (dd) for snow setup.

kenchan · 03-06-2012, 12:04 PM

op-i checked out avantguard's site and the 19x8.5 spokes protrude past the lip for caliper clearance. that means if you take your car to an auto wash the rails could scratch your spokes.

just thought i put that out there since now i dont think i want to use these as my winter set as i may need to take my G to the manned autowash in the winter. this winter was very mild so i was able to wash my car at home, but usually it's 3months of sub freezing temps.

kenchan · 03-06-2012, 12:06 PM

M368 - Avant Garde Wheels

check out the front genesis pict to see wat i mean.

slo · 03-06-2012, 12:52 PM

Here is a tire size calculator:

LINK

tjlazer · 03-06-2012, 02:33 PM

Quote:

Originally Posted by akaaronkatz

I've thought about going from the stock 18' wheels to 19' Avant Garde M368's. Has anyone had any issues with this and would going from 18' to 19' wheels mess up my mileage odometer? All feedback is appreciated, Thanks

You are aware the 370Z comes in 18's and 19's right? It's a matter of the tires that make it work well with keeping it in check with the Spedometer. It's called plus sizing. 245-40-19 and 275-35-19 or 285-35-19's will do the trick as these are what the Sport package and Nismo Z's use.

alcheng · 03-06-2012, 03:28 PM

Quote:

Originally Posted by kenchan

op-i checked out avantguard's site and the 19x8.5 spokes protrude past the lip for caliper clearance. that means if you take your car to an auto wash the rails could scratch your spokes.

just thought i put that out there since now i dont think i want to use these as my winter set as i may need to take my G to the manned autowash in the winter. this winter was very mild so i was able to wash my car at home, but usually it's 3months of sub freezing temps.

In case of car wash, you can always go to a coin wash, or some drive thru that they don't have rail.

kenchan · 03-06-2012, 03:31 PM

Quote:

Originally Posted by alcheng

In case of car wash, you can always go to a coin wash, or some drive thru that they don't have rail.

shut up smart arse.

alcheng · 03-06-2012, 03:52 PM

Quote:

Originally Posted by kenchan

shut up smart arse.

Sorry dude, I don't use my brain too often.

kenchan · 03-06-2012, 04:01 PM

Quote:

Originally Posted by alcheng

Sorry dude, I don't use my brain too often.

so does anyone know if the M368's disc have voids/cavity between the lug bores?

03-05-2012, 09:45 PM	#1 (permalink)
akaaronkatz Base Member Join Date: Jun 2011 Location: Brooklyn, NY Posts: 65 Drives: 09 Nissan 370Z M6 Rep Power: 14	18' wheels to 19' wheels I've thought about going from the stock 18' wheels to 19' Avant Garde M368's. Has anyone had any issues with this and would going from 18' to 19' wheels mess up my mileage odometer? All feedback is appreciated, Thanks __________________ If you're not first you're last!

03-05-2012, 09:59 PM	#4 (permalink)
Huck A True Z Fanatic Join Date: Jan 2012 Location: Cocoa, Florida Age: 42 Posts: 5,075 Drives: Pantydropper machine Rep Power: 34	When you get bigger wheels you usually get thinner tires, so the overall circumference of the tire stays the same, same rotational ratio, blah blah blah. If you get a much bigger tire then yeah it can throw off your tachometer. Like alcheng said, shop techs can fix it for you. __________________ VLEDS \| Evo-R \| Moddiction \| CF Hood Struts \| F.I. CF CBE & LTH \| Stillen CAI \| NST Pulleys \| UpRev \| Z1 \| M7 \| Status \| Forgestar \| PSS \| Whiteline \| SPL \| SPC \| Kenwood \| Zenclosure \| Kicker \| Alpine Type R

03-06-2012, 07:33 AM	#5 (permalink)
PapoZalsa A True Z Fanatic Join Date: Nov 2009 Location: Not in Sunny Florida Posts: 6,358 Drives: 16 Nismo w/Tech Pack Rep Power: 4500	Do a serach for tire calculator size, it will give you the sizes comparables with your current ones. However the Sport Pkg size on the Z is 19". __________________ 2009 370Z MB Base w/Sport Package 6MT Modshack's Custom Air Intakes /3M Clear Bra/ Illuminated Kick Plates / F. I CBE w/12" resonators / EVO-R Front Lip / Rear Hatch Wing / Tein S-Tech Springs /Ilegal Tint in the Rep. of VA/4x20mm Z1 Spacers/ Vinyl Roof/Liquid Carbon Designs

03-06-2012, 12:52 PM	#10 (permalink)
slo Base Member Join Date: Mar 2012 Location: denver Posts: 240 Drives: 370, TBSS, ZX10r Rep Power: 14	Here is a tire size calculator: LINK __________________ My introduction Thank you to my 2012 season motorcycle sponsors Colorado Powersports - TFOG Wheelsports - SIDI Boots - Scorpion Helmets TechSpec USA - HotBodies Racing - ASV Inventions

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03-05-2012, 09:51 PM	#2 (permalink)
alcheng A True Z Fanatic Join Date: Jun 2011 Location: Toronto Posts: 28,894 Drives: 2011 ZR PW w/Clutch Rep Power: 418353	Go with the size of OEM tires then you are good to go. Otherwise, tech at the tires shop should know.

03-06-2012, 08:05 AM	#6 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,407 Drives: slowly Rep Power: 40570	19" is perfectly fine, your tach will be unchanged (engine RPM stays the same). Your Speedo will be off. I believe the bigger the tire the lower it reads smaller higher. Bigger circumference leads to less revolutions of the tire and a lower speed reading. Its usually a minor change ~2mph you can calculate it or find an online tool, its simple math.

03-06-2012, 11:45 AM	#7 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	yah, 19's are fine. the 368's only come in 8.5" and 9.5" no? will still work for our stock tire sizes, but just wondering. i think the offsets were like 35/40 or something so you'll need spacers for the rear for sure. anyone know if there are sufficient cavities between the lug bores on the disc to support bolt-on spacers? i was looking at getting them for my G (dd) for snow setup.

03-06-2012, 12:04 PM	#8 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	op-i checked out avantguard's site and the 19x8.5 spokes protrude past the lip for caliper clearance. that means if you take your car to an auto wash the rails could scratch your spokes. just thought i put that out there since now i dont think i want to use these as my winter set as i may need to take my G to the manned autowash in the winter. this winter was very mild so i was able to wash my car at home, but usually it's 3months of sub freezing temps.

03-06-2012, 12:06 PM	#9 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	M368 - Avant Garde Wheels check out the front genesis pict to see wat i mean.