Conti DSW HELP!!!

Z Monster · 04-21-2011, 12:13 AM

So i was on tire rack and i had trouble finding the correct size tire of continental extreme contact for my nismo rims.

I could not find 245/40/19 which is recommended for the front nismo rims but
I did find 245/35/19 instead of the 40 aspect ratio.
I did also find the rear tire at 285/35/19 which i will be getting.

My question is regarding the front tire aspect ratio. Should I get 245/35/19? OR 245/45/19 for the front? Please keep in mind I will be putting in swift spec-R springs that will drop my car about an inch. Is it ok if ran 245/35/19 and 285/35/19 with those springs? or do you think more meat in the front would be much better get the 45 aspect ratio?

Im really bummed out that they dont have 245/40/19 for the front tires. Its either i go up 5 or down 5 for the height. Has anyone ran 35 aspect ratio for front and back?

Thanks a lot guys

christian370z · 04-21-2011, 12:55 AM

You won't have any problems stepping down to a 35mm side wall, much better than going up to a 45 sidewall. Besides, the 35 is a better aspect ratio for the speedometer accuracy from what I have read although I could be wrong.

azn370z · 04-21-2011, 01:03 AM

This size?
http://www.tirerack.com/tires/tires....efore%206/2010

ZForce · 04-21-2011, 01:33 AM

You should try to keep with the OEM tire ratio as close as possible and also look at the difference between the "Section Width" of the front rear combo you are trying to accomplish. Straying from the OEM Section Width of 1.18 will create more understeer if the difference in section width increases say like to 1.57. I have spent the last two weeks hi-jacking other tire threads asking questions and getting great responses from tire gurus.

I found this Tire Calculator very helpful once I had an understanding of what to look for:

Tire Dimensions Made Simple - Discount Tire

IMO the closest to OEM ratios would be 265/35/19 Fr & 285/35/19 Rr on the Sport Rims.

255/35/19 & 285/35/19 would be my second choice.

265/35/19 & 305/30/19 is ideal but I have heard the tire is too big for the sport rim. Some may disagree though.

245/40/19 & 285/35/19 would be my third option.

Run the numbers on the tire calculator and you will see. You want to punch in three sets of numbers.

First the OEM Fr & Rr

Then punch in the OEM front and say the tire you want to go up to.

Third punch in the Fr & Rr of the tires you want to see the staggered "Section Width" difference. Remember OEM staggered difference is 1.18 and anything higher will create more understeer which is not good. You want a combo that will stay close to OEM 1.18 or a tad lower like 0.78.

Hope this helps and reps to you for opening a new thread. And WELCOME to the SWIFT Club

Z Monster · 04-21-2011, 06:31 AM

Quote:

Originally Posted by christian370z

You won't have any problems stepping down to a 35mm side wall, much better than going up to a 45 sidewall. Besides, the 35 is a better aspect ratio for the speedometer accuracy from what I have read although I could be wrong.

Thanks Christian370z, that is what i thought.

AZN370z, that is what i saw, but for some reason they did not have it on the chart. Very confusing because they show the 40 height, but its not listed on the chart at all.

Z Monster · 04-21-2011, 06:37 AM

Quote:

Originally Posted by ZForce

You should try to keep with the OEM tire ratio as close as possible and also look at the difference between the "Section Width" of the front rear combo you are trying to accomplish. Straying from the OEM Section Width of 1.18 will create more understeer if the difference in section width increases say like to 1.57. I have spent the last two weeks hi-jacking other tire threads asking questions and getting great responses from tire gurus.

I found this Tire Calculator very helpful once I had an understanding of what to look for:

Tire Dimensions Made Simple - Discount Tire

IMO the closest to OEM ratios would be 265/35/19 Fr & 285/35/19 Rr on the Sport Rims.

255/35/19 & 285/35/19 would be my second choice.

265/35/19 & 305/30/19 is ideal but I have heard the tire is too big for the sport rim. Some may disagree though.

245/40/19 & 285/35/19 would be my third option.

Run the numbers on the tire calculator and you will see. You want to punch in three sets of numbers.

First the OEM Fr & Rr

Then punch in the OEM front and say the tire you want to go up to.

Third punch in the Fr & Rr of the tires you want to see the staggered "Section Width" difference. Remember OEM staggered difference is 1.18 and anything higher will create more understeer which is not good. You want a combo that will stay close to OEM 1.18 or a tad lower like 0.78.

Hope this helps and reps to you for opening a new thread. And WELCOME to the SWIFT Club

Thanks Z force, this really helped out a lot and put things in perspective. I was wondering how to get bumped up on rep or how to rep other ppl. You sir get +1

tsolin01 · 04-21-2011, 09:21 AM

I have these in 245/40/19 and 285/35/19 on the same rim widths as Nismo rims. They should be available through TireRack unless they've been discontinued for some reason...

Z Monster · 04-21-2011, 09:33 AM

Quote:

Originally Posted by tsolin01

I have these in 245/40/19 and 285/35/19 on the same rim widths as Nismo rims. They should be available through TireRack unless they've been discontinued for some reason...

Yes I just figured it out

wow I dont know how i surpassed this size. Thank you guys for all your help

cossie1600 · 04-21-2011, 10:00 AM

good job z force +1

kenchan · 04-21-2011, 11:41 AM

i usually just use my excel sheet where i put a quick formula "= cell1*cell2*.001"

walla you get the height of the tire in cm.

kenchan · 04-21-2011, 11:43 AM

btw, for a 245/40 tire, Cell1 would be your width (245) and Cell2 would be your profile (40).

ZForce · 04-21-2011, 10:41 PM

Quote:

Originally Posted by Z Monster

Thanks Z force, this really helped out a lot and put things in perspective. I was wondering how to get bumped up on rep or how to rep other ppl. You sir get +1

I am glad to give back to the community. I have been sponging off members for awhile and it was about time I gave back. I still have not figured out the rep thing. Thanks for the props.

Quote:

Originally Posted by tsolin01

I have these in 245/40/19 and 285/35/19 on the same rim widths as Nismo rims...

And they do look good!

Quote:

Originally Posted by cossie1600

good job z force +1

No thank you sir! I learned the section width from you amongst other tire info. Also props to kenchan, RCZ, christian370z and several others from our discussions on other tire threads. I learned alot from you guys

daisuke149 · 04-21-2011, 10:56 PM

why dont you go with extreme contact DW instead of DWS? they have the sizes you need.

kenchan · 04-21-2011, 11:33 PM

yah, im finding that the DW's are actually pretty damn nice for street.

and the sidewall appearance is kinda growing on me now. (it's round and im not a real big fan of round sidewalls).

kenchan · 04-21-2011, 11:41 PM

Quote:

Originally Posted by ZForce

Also props to kenchan, RCZ, christian370z and several others from our discussions on other tire threads. I learned alot from you guys

glad my input is constructive. been modding cars for a while now and i only speak from actual experience from the stuff i bought and tried.

04-21-2011, 12:13 AM	#1 (permalink)
Z Monster Base Member Join Date: Feb 2011 Location: Michigan Posts: 170 Drives: 13 White NISMO Rep Power: 14	Conti DSW HELP!!! So i was on tire rack and i had trouble finding the correct size tire of continental extreme contact for my nismo rims. I could not find 245/40/19 which is recommended for the front nismo rims but I did find 245/35/19 instead of the 40 aspect ratio. I did also find the rear tire at 285/35/19 which i will be getting. My question is regarding the front tire aspect ratio. Should I get 245/35/19? OR 245/45/19 for the front? Please keep in mind I will be putting in swift spec-R springs that will drop my car about an inch. Is it ok if ran 245/35/19 and 285/35/19 with those springs? or do you think more meat in the front would be much better get the 45 aspect ratio? Im really bummed out that they dont have 245/40/19 for the front tires. Its either i go up 5 or down 5 for the height. Has anyone ran 35 aspect ratio for front and back? Thanks a lot guys Last edited by Z Monster; 04-21-2011 at 12:17 AM.

04-21-2011, 12:55 AM	#2 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 431	You won't have any problems stepping down to a 35mm side wall, much better than going up to a 45 sidewall. Besides, the 35 is a better aspect ratio for the speedometer accuracy from what I have read although I could be wrong. __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

04-21-2011, 01:03 AM	#3 (permalink)
azn370z A True Z Fanatic Join Date: Nov 2008 Location: Seattle Posts: 1,722 Drives: z34 - R1 Rep Power: 489	This size? http://www.tirerack.com/tires/tires....efore%206/2010 __________________ 2010 k23 H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts

04-21-2011, 09:21 AM	#7 (permalink)
tsolin01 Track Member Join Date: Feb 2010 Location: Dallas, TX Posts: 657 Drives: 2010 370Z Rep Power: 16	I have these in 245/40/19 and 285/35/19 on the same rim widths as Nismo rims. They should be available through TireRack unless they've been discontinued for some reason... __________________ SOLD 12/30/2011 2010 370Z Coupe Monterey Blue 6MT/Touring/Sport/Nav F.I. CBE CF w/ 12" Res \| V1 \| SecondSkin \| Stillen G3 \| EVO-R CF B-Pillars \| Volk GT-S Ti Gunmetal 19x9.5 +30 F, 19x10.5 +8 R \| Swift Spec-R Springs

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Conti ExtremeContact DW	Volcom370Z	Wheels & Tires	3	06-15-2010 11:19 AM

04-21-2011, 01:33 AM	#4 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 20	You should try to keep with the OEM tire ratio as close as possible and also look at the difference between the "Section Width" of the front rear combo you are trying to accomplish. Straying from the OEM Section Width of 1.18 will create more understeer if the difference in section width increases say like to 1.57. I have spent the last two weeks hi-jacking other tire threads asking questions and getting great responses from tire gurus. I found this Tire Calculator very helpful once I had an understanding of what to look for: Tire Dimensions Made Simple - Discount Tire IMO the closest to OEM ratios would be 265/35/19 Fr & 285/35/19 Rr on the Sport Rims. 255/35/19 & 285/35/19 would be my second choice. 265/35/19 & 305/30/19 is ideal but I have heard the tire is too big for the sport rim. Some may disagree though. 245/40/19 & 285/35/19 would be my third option. Run the numbers on the tire calculator and you will see. You want to punch in three sets of numbers. First the OEM Fr & Rr Then punch in the OEM front and say the tire you want to go up to. Third punch in the Fr & Rr of the tires you want to see the staggered "Section Width" difference. Remember OEM staggered difference is 1.18 and anything higher will create more understeer which is not good. You want a combo that will stay close to OEM 1.18 or a tad lower like 0.78. Hope this helps and reps to you for opening a new thread. And WELCOME to the SWIFT Club

04-21-2011, 10:00 AM	#9 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	good job z force +1

04-21-2011, 11:41 AM	#10 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	i usually just use my excel sheet where i put a quick formula "= cell1cell2.001" walla you get the height of the tire in cm.

04-21-2011, 11:43 AM	#11 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	btw, for a 245/40 tire, Cell1 would be your width (245) and Cell2 would be your profile (40).

04-21-2011, 10:56 PM	#13 (permalink)
daisuke149 My *** is famous! Join Date: Mar 2010 Location: Alpharetta, GA Posts: 4,849 Drives: 2013 Boss 302 PW Rep Power: 31	why dont you go with extreme contact DW instead of DWS? they have the sizes you need.

04-21-2011, 11:33 PM	#14 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	yah, im finding that the DW's are actually pretty damn nice for street. and the sidewall appearance is kinda growing on me now. (it's round and im not a real big fan of round sidewalls).